Rockwell Shrike Commander 500

Adam J. Barney

Conquest Air Cargo

On August 28, 2020, about 0902 eastern daylight time, an Aero Commander Aircraft 500-S, N900DT, was destroyed when it impacted a building near Pembroke Park, Florida. The commercial pilot and pilot-rated passenger were fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 business flight. According to preliminary Federal Aviation Administration (FAA) ADS-B and audio information, after takeoff from Pompano Beach Airpark about 0852, the flight proceeded in a southeast direction to the shore, then flew in a south-southwest direction just offshore. About 0858, when the flight was about 13 nautical miles northeast from Miami-Opa Locka Executive Airport (OPF), which was the destination, an occupant onboard the airplane contacted the OPF air traffic control tower (ATCT) and advised the controller that the flight was inbound. The flight was radar identified and continued in a south-southwest direction while climbing to 1,100 ft mean sea level (msl). At about 0859:49, or 1 minute 49 seconds after the initial contact with the OPF ATCT, an occupant advised the controller, "and uh november delta tango ah we have uh an engine problem, we [are going] to North Perry [Airport]." The OPF ATCT initially coordinated with Miami Approach and advised the facility that the flight was descending, with a last reported altitude of 300 ft. The controller then attempted to coordinate with North Perry ATCT. About 0859:53, the airplane turned to a southwest direction, climbed to about 1250 ft msl. About that time a witness who was located about 2.8 nautical miles east-southeast of the flightpath when the airplane was flying in the southwest direction reported hearing the engines accelerating and decelerating which changed to a popping sound. The airplane continued flying and went out of his earshot. The ADS-B data reflected that about 0900:47, the airplane turned and flew in a west-northwesterly direction until about 0901:58, when the flight proceeded in a north-northwest direction until near the accident site. Witnesses who were on a golf course north of the accident site reported seeing the airplane flying in a westerly direction with no reported engine sound. They then noted the airplane banked left and then descended. The airplane collided with the east face of a storage building in a densely populated area, then fell to the parking lot of the building. There were no reported ground injuries. Preliminary examination of the accident site revealed an impact mark on the building which reflected the airplane being in a right bank. Examination of the wreckage revealed no evidence of pre or postimpact fire.

Alaska Department of Natural Resources

On May 28, 2020, about 1600 Alaska daylight time, an Aero Commander 500S airplane, N909AK sustained substantial damage when it was involved in an accident near Aniak, Alaska. The pilot and three passengers sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 public aircraft flight. The airplane was owned by the State of Alaska and operated by the Division of Forestry. According to the pilot, after arriving in Aniak, he had the local fuel vendor's ground service personnel refuel the airplane. He then signed the fuel receipt, and he returned to the airplane's cockpit to complete some paperwork before departure. Once the paperwork was complete, he then loaded his passengers, started the airplane's engines, and taxied to Runway 29 for departure. The pilot said that shortly after takeoff, and during initial climb, he initially noticed what he thought was mechanical turbulence followed by a reduction in climb performance, and the airplane's engines began to lose power. Unable to maintain altitude and while descending about 400 ft per minute, he selected an area of shallow water covered terrain as an off-airport landing site. The airplane sustained substantial damage during the landing. The fueler reported that he was unfamiliar with the airplane, so he queried the pilot as to where he should attach the grounding strap and the location of the fuel filler port. Before starting to refuel the airplane, he asked the pilot "do you want Prist with your Jet" to which the pilot responded that he did not. After completing the refueling process, he returned to his truck, wrote "Jet A" in the meter readings section of the prepared receipt, and presented it to the pilot for his signature. The pilot signed the receipt and was provided a copy. The fueler stated that he later added "no Prist" to his copy of the receipt, and that he did not see a fuel placard near the fueling port. A postaccident examination revealed that the reciprocating engine airplane had been inadvertently serviced with Jet A fuel. A slightly degraded placard near the fuel port on the top of the wing stated, in part: "FUEL 100/100LL MINIMUM GRADE AVIATION GASOLINE ONLY CAPACITY 159.6 US GALLONS."

Torres Strait Air

On 8 March 2015, the pilot of an Aero Commander 500 aircraft, registered VH-WZV, prepared to conduct a charter flight from Badu Island to Horn Island, Queensland, with five passengers. The aircraft had been refuelled earlier that day at Horn Island, where the pilot conducted fuel drains with no contaminants found. He had operated the aircraft for about 2 hours prior to landing at Badu Island with no abnormal performance or indications. At about 1330 Eastern Standard Time (EST), the pilot started the engines and conducted the standard checks with all indications normal, obtained the relevant clearances from air traffic control, and taxied for a departure from runway 30. As the pilot lined the aircraft up on the runway centreline at the threshold, he performed a pre-take-off safety self-brief and conducted the pre-takeoff checks. He then applied full power, released the brakes and commenced the take-off run. All engine indications were normal during the taxi and commencement of the take-off run. When the airspeed had increased to about 80 kt, the pilot commenced rotation and the nose and main landing gear lifted off the runway. Just as the main landing gear lifted off, the pilot detected a significant loss of power from the left engine. The aircraft yawed to the left, which the pilot counteracted with right rudder. He heard the left engine noise decrease noticeably and the aircraft dropped back onto the runway. The pilot immediately rejected the take-off; reduced the power to idle, and used rudder and brakes to maintain the runway centreline. The pilot initially assessed that there was sufficient runway remaining to stop on but, due to the wet runway surface, the aircraft did not decelerate as quickly as expected and he anticipated that the aircraft would overrun the runway. As there was a steep slope and trees beyond the end of the runway, he steered the aircraft to the right towards more open and level ground. The aircraft departed the runway to the right, collided with a fence and a bush resulting in substantial damage. The pilot and passengers were not injured.

Ponderosa Aviation

The commercial pilot reported that the purpose of the flight was to perform a check/orientation flight with the airline transport pilot (ATP), who was new to the area; the ATP was the pilot flying. The airplane was started, and an engine run-up completed. The commercial pilot reported that, during the takeoff roll, all of the gauges were in the “green.” After reaching an airspeed of 80 knots, the airplane lifted off the ground. About 350 ft above ground level (agl), the pilots felt the airplane “jolt.” The commercial pilot stated that it felt like a loss of power had occurred and that the airplane was not responding. He immediately shut off the boost pumps, and the ATP initiated a slow left turn in an attempt to return to the airport to land. The airplane descended rapidly in a nose-low, right-wing-low attitude and impacted the ground. A witness reported that he watched the airplane take off and that it sounded normal until it reached the departure end of the runway, at which point he heard a distinct “pop pop,” followed by silence. The airplane then entered an approximate 45-degree left turn with no engine sound and descended at a high rate with the wings rolling level before the airplane went out of sight. Another witness made a similar statement. Based on the witnesses’ statements and photographs of the twisted airplane at the accident site, it is likely that a total loss of engine power occurred and that, during the subsequent turn back to the airport, the ATP did not maintain sufficient airspeed and exceeded the airplane’s critical angle-of-attack, which resulted in an aerodynamic stall and impact with terrain. Although a postaccident examination of the airframe and engines did reveal an inconsistency between the cockpit control positions and the positions of the fuel shutoff valves on the sump tank, this would not have precluded normal operation. No other anomalies were found that would have precluded normal operation.

Línea Aérea Costa Norte

The twin engine aircraft departed Iquique-General Diego Aracena Airport at 2115LT on May 17 on a fishing survey and prospection mission over the Pacific Ocean, carrying two pilots. There was sufficient fuel on board for a 7,5-hour flight. While cruising by night, the aircraft entered an uncontrolled descent and crashed in the sea about 30 km northwest of El Loa. Few debris were found floating on water the following morning. Both occupants were killed.

CM Airlines

For unknown reasons, the twin engine aircraft was flying low when it impacted tree tops and crashed in a wooded area located in Plan de La Laguna, in the Comayagua National Park. Both occupants were killed.

U.S. Department of Commerce

The pilot reported that he performed a stabilized visual approach with a right crosswind. The airplane touched down on the centerline and subsequently drifted to the right. The pilot overcorrected for the drift and the airplane veered hard to the left. The airplane continued off the left side of the runway and skidded to a complete stop. The right main landing gear collapsed and the right wingtip hit the ground, which resulted in substantial damage to the fuselage and wing. A postaccident inspection of the airplane revealed no preimpact anomalies. The pilot additionally reported that there was no mechanical malfunction or failure.

Flightech

At 0445 Eastern Standard Time on 24 February 2011, the pilot of an Aero Commander 500S, registered VH-WZU, commenced a freight charter flight from Cairns to Horn Island, Queensland under the instrument flight rules. The aircraft arrived in the Horn Island area at about 0720 and the pilot advised air traffic control that he intended holding east of the island due to low cloud and rain. At about 0750 he advised pilots in the area that he was north of Horn Island and was intending to commence a visual approach. When the aircraft did not arrive a search was commenced but the pilot and aircraft were not found. On about 10 October 2011, the wreckage was located on the seabed about 26 km north-north-west of Horn Island.

Aircraft Guaranty Corporation Trustee

The Aero Commander 500S had recently been purchased. The new owner of the aircraft retained the services of 2 experienced pilots to deliver the aircraft from Portland, Oregon, United States, to Bern, Switzerland. After having flown several positioning legs, the aircraft arrived at Rankin Inlet for refuelling. The aircraft was refuelled from two 45-gallon drums and was to continue on to Iqaluit, Nunavut. The pilot-in-command occupied the right seat and the pilot flying the aircraft occupied the left seat. The aircraft was at its maximum takeoff weight of 7000 pounds. Prior to take off, the crew conducted a run-up and all indications seemed normal. During the takeoff roll, the engines did not produce full power and the crew elected to reject the takeoff. After returning to the ramp, a second run-up was completed and once again all indications seemed normal. Shortly after second rotation, cylinder head temperatures increased and both Lycoming TIO-540-E1B5 engines began to lose power. The pilots attempted to return to the airport, but were unable to maintain altitude. The landing gear was extended and a forced landing was made on a flat section of land, approximately 1500 feet to the southwest of the runway 13 threshold. There were no injuries and the aircraft sustained substantial damage.

Commonwealth Aviation

The pilot departed in the twin-engine airplane with an unknown quantity of fuel and a fuel quantity indicating system that was known to be inaccurate. Immediately after takeoff, approximately 1/2 mile beyond the departure end of the runway, witnesses reported the engine noise from the accident airplane as "surging" as the airplane passed overhead, and one witness described a "radical" turn back to the airport. Two witnesses stated that only one engine was running, and added that it was "revving," and would then stop before revving up again. During the descent to the airport, radar data showed the airplane at 93 knots 700 feet and 1 mile from the runway, and at 90 knots at 500 feet and 1/2 mile from the runway, but the airplane crashed prior to the approach end of the runway. Post accident examination of the wreckage revealed no evidence of a pre accident mechanical malfunction. The fuel system had a capacity of 226 gallons, was serviced through a single port on top of the left wing, and the tanks were interconnected to a center fuel sump that fed both engines. The fuel cells were opened through access panels and each was intact and contained only trace amounts of fuel. The airplane was leveled, the drain petcock was opened at the center fuel cell sump, and 1 quart of fuel was drained.

Taxi Aéreo Caribeño

The twin engine aircraft departed Medellín-Enrique Olaya Herrera Airport at 1745LT on a cargo flight to Montería, carrying two pilots and a load of bovine embryos. The flight to Montería was completed at FL130 then the crew was cleared to start the descent to Montería-Los Garzones Airport. At an altitude of 7,500 feet on descent, the aircraft went out of control and crashed in an open field located in Verada Arroyo, near Planeta Rica. The aircraft disintegrated on impact and both pilots were killed.

Central Air Southwest

The airline's chief pilot was giving a newly-hired pilot a required competency/proficiency check. Memory data from the airplane's global positioning system showed the airplane made steep 360-degree turns to the left and right before continuing towards a practice area at gradually decreasing airspeed and altitude. A low cloud ceiling prevailed. Witnesses said they heard both engines "sputter, then quit," and saw the airplane clear a grove of trees, stall, and strike the ground. The landing gear was down and the flaps were in the approach setting. Both propellers were in the low pitch/high rpm setting, and bore little rotational signatures. Both engine fuel supply lines contained only residual fuel. Those familiar with the chief pilot's flying practices stated that he always followed a certain routine when giving a check ride. The routine consisted of the following: After performing steep 360-degree turns, he would ask the trainee to configure the airplane for landing and demonstrate minimum control maneuvers. Prior to executing steep turns, he would turn the boost pumps on. At the completion of the maneuver, the pumps would be turned off. The investigation revealed that there are unguarded fuel shutoff switches next to the boost pumps, and the circumstances of the accident are consistent with the these fuel shutoff switches being inadvertently placed in the off position, instead of the fuel boost pumps.

Gramar 500

On June 9, 2008, about 1401 eastern daylight time, an Aero Commander 500S, N501AP, registered to and operated by Gramar 500, Inc., experienced a loss of engine power in both engines and was ditched in the Atlantic Ocean about 1/2 mile south of North Bimini, Bahamas. Visual meteorological conditions prevailed in the area and a visual flight rules flight plan was filed for the 14 Code of Federal Regulations (CFR) Part 91 personal flight from Nassau International Airport (MYNN), Nassau, Bahamas, to Ft. Lauderdale Executive Airport (FXE), Ft. Lauderdale, Florida. The airplane was destroyed due to salt water immersion, and the airline transport rated pilot, the sole occupant, was not injured. The pilot stated that when the flight was past Bimini, the right engine started running rough and losing power. He turned southeast to enter a left base for runway 09 at South Bimini Airport, and the left engine also began to run rough and lost power. The pilot ditched the aircraft, evacuated into a life raft, and was rescued by a pleasure boater. The pilot also stated that 25 gallons of fuel were added while at MYNN, for a total fuel supply of 90 gallons. Both engines were test run 8 days after the accident using a test propeller. Both engines ran to near maximum RPM. One magneto from each engine was replaced prior to the test run.

Private Australian

At 1946 Eastern Standard Time on 31 July 2007, a Rockwell International Aero Commander 500S, registered VH-YJB (YJB), departed Essendon Airport, Vic. on a business flight to Shepparton that was conducted at night under the instrument flight rules (IFR). On board were the pilot and one passenger. At 1958, while in the cruise at 7,000 ft above mean sea level (AMSL) in Class C controlled airspace, radar and radio contact with the aircraft was lost simultaneously by air traffic control when it was about 25 NM (46 km) north-north-east of Essendon. The air traffic controller declared a distress phase after a number of unsuccessful attempts to contact the pilot. At 2003, the Operations Director at Melbourne Centre declared the aircraft as probably lost and advised AusSAR. A search was commenced using a helicopter and an aeroplane in addition to ground search parties. No emergency locator transmitter signal was reported. At 2147, aircraft wreckage was located by a searching aircraft in timbered ranges near Clonbinane, approximately 50 km north of Melbourne. At about 2200, a ground search party confirmed that the wreckage was that of YJB and that there were no survivors. The flight was arranged to take the company owner, who was also a licensed aircraft maintenance engineer (LAME), to Shepparton to replace an unserviceable starter motor in another of the operator<U+201F>s aircraft. The pilot, who had landed at Essendon at 1915 from a previous flight in another of the operator<U+201F>s aircraft, was tasked to fly the owner to Shepparton. The pilot transferred to YJB, which had previously been prepared for flight by another company pilot. At 1938, while taxiing for takeoff, the pilot advised the aerodrome controller of the intention to conduct the IFR flight, adding, „…and request a big favour for a submission of a flight plan, with an urgent departure Essendon [to] Shepparton [and] return<U+201F>. The aerodrome controller did not have the facilities for processing flight notifications and sought the assistance of a controller in the Melbourne air traffic control centre. There were no eyewitnesses to the accident. Residents living in the vicinity of the accident site were inside their homes and reported difficulty hearing anything above the noise made by the wind and the foliage being blown about. One of the residents reported hearing a brief, loud engine noise. Another resident thought the noise was that of a noisy vehicle on the road. The noise was described as being constant, „…not spluttering or misfiring<U+201F> and lasted for only a few seconds. Some of those residents near the accident site reported hearing and feeling an impact only moments after the engine noise ceased. The aircraft was seriously damaged by excessive in-flight aerodynamic forces and impact with the terrain. The vegetation in the immediate vicinity of the main aircraft wreckage was slightly damaged as the aircraft descended, nearly vertically, through the trees. The pilot and passenger were fatally injured.

Bahia Táxi Aéreo - BATA

The twin engine aircraft departed Petrolina Airport at 1221LT on a flight to Salvador, carrying 2 passengers, 2 pilots and a load of bags containing bank documents. At 1332LT, while in cruising altitude, the crew contacted ATC and reported an engine failure. The captain elected to make an emergency landing and reduced his altitude when the aircraft entered a right turn and crashed in a field located in São Sebastião do Passé, about 50 km northwest of Salvador Airport. The aircraft was destroyed upon impact and all four occupants were killed.

SVG Air - Saint Vincent %26 Grenadines Air

The twin engine aircraft departed Canouan Island Airport at 1842LT on a short flight to Kingstown, Saint Vincent & Grenadines, carrying one passenger and one pilot. Shortly after takeoff, the pilot was instructed to report once passing over Bequia Island. Few minutes later, after passing Bequia Island, the pilot contacted ATC and reported he was at the altitude of 1,100 feet with an ETA in Kingstown in four minutes. At 1853LT, the aircraft crashed in unknown circumstances in the sea. The next morning, few debris were found floating on water and no trace of both occupants was ever found. The passenger was the Director of American Eagle for the Canouan Island. All SAR operations were abandoned few days later and the wreckage was not found.

Terral Táxi Aéreo

The twin engine aircraft departed Recife-Guararapes Airport at 0609LT on a flight to Natal, carrying one passenger, one pilot and a load consisting of bags containing bank documents. On approach to Natal-Augusto Severo Airport runway 16L, the left engine failed. Shortly later, at a height of about 600 feet, the right engine failed as well. Aware that he will not be able to reach the airport, the pilot attempted an emergency landing in an open field. On touchdown, the undercarriage collapsed and the aircraft slid for about 200 metres before coming to rest in a muddy field. Both occupants escaped with minor injuries and the aircraft was damaged beyond repair.

Clair Aero

The non-Spanish speaking commercial pilot was preparing for a Title 14, CFR Part 135 on-demand charter flight in a twin-engine airplane with gasoline engines. A non-English speaking fuel truck operator inadvertently serviced the accident airplane with 120 gallons of Jet-A turbine fuel. In the pilot's written statement he reported that just after takeoff, with six passengers aboard, both engines began to lose power, and the airplane subsequently descended and collided with tree-covered terrain at the departure end of the runway. An on-site examination of the fuel vender's Jet-A fuel truck disclosed that the dispensing nozzle installed on the truck was the same nozzle as a typical gasoline nozzle. An examination of the accident airplane's fuel caps and fueling ports disclosed that the accident airplane was equipped with round, fuel tank inlet restrictors, that would prevent fueling from a jet fuel nozzle of the appropriate size, but the fueling ports were not placarded with the required statement indicating that only gasoline (av-gas) should be used.

Tasair

The aircraft commenced taxying at Hobart for a Visual Flight Rules (VFR) ferry flight to Devonport. The pilot, who was the sole occupant, reported a departure time of 1643 to air traffic control, with an intention to climb to 8,500 ft and to fly a track of 319 degrees magnetic. Due to following traffic, the pilot was required to report leaving specific altitudes. At 1646, the pilot reported leaving 4,500 ft, and was advised that air traffic services were terminated. The acknowledgement of that call was the last communication heard from the pilot. At about 1800, the operator’s staff at Devonport advised the Hobart base that the aircraft had not arrived. The operator advised AusSAR and the Hobart air traffic control tower, and organised company search aircraft from both Hobart and Devonport. The non-flying occupant of the Hobart search aircraft sighted the wreckage at about 1930. Shortly after, a search and rescue helicopter arrived at the accident site. The pilot of the aircraft was found fatally injured in the wreckage. The wreckage was located 58 km from Hobart airport on a bearing of 320 degrees magnetic. Based on predictions of aircraft performance and the distance of the accident site from Hobart, the estimated time of the accident was 1656. There were no eyewitnesses to the accident. Aircraft flight profile The aircraft was not equipped with a flight data recorder or cockpit voice recorder, nor was it required to be. As such, and given that the aircraft was operating outside of radar coverage, there was no recorded flight profile information available. The pilot was not required to report cruising at 8,500 ft and there was no evidence to confirm that the aircraft had reached that altitude. However, based on the normal climb and cruise performance, forecast winds and the radio broadcasts made by the pilot, the aircraft should have reached an altitude of 8,500 ft approximately 35 km from Hobart at about 1651, which was 5 minutes prior to the estimated time of the accident at 1656.

South Carolina Department of Natural Resources

According to the pilot, he requested the refueler to top off his fuel tanks with "100 low lead fuel". After refueling, the pilot performed a preflight including taking fuel samples from under the wings, draining the rear fuel drain, and checking the fuel cap for security. The engine start, run-up, and taxi were uneventful. The airplane departed runway 17 and was in a positive rate of climb. At approximately 200 feet AGL the airplane began to lose power. Shortly after the pilot ensured that the throttle, propeller, and mixture controls were in the full forward position, the airplane lost power in both engines. The pilot executed an emergency off field landing. Examination of the wreckage revealed that the left wing had broken off and the aft cabin area was crushed. According to the refueler, he stated that he mistakenly used the Jet-A fuel truck instead of the AVGAS 100 low lead truck, and pumped 58 gallons of Jet-A into the airplane. Examination of the fuel samples taken from both engines revealed the left and right engine contained 70 percent of jet A fuel.

TAF Linhas Aéreas - Taxi Aéreo Fortaleza

The twin engine aircraft departed Fortaleza-Pinto Martins Airport on a local post maintenance test flight (50 hours), carrying two passengers and one pilot. After takeoff, while climbing to a height of 200 feet, the power on the left engine fluctuated. The pilot modified the position of the fuel selector but the situation did not change. As the aircraft was losing height, the pilot shut down the left engine and feathered its propeller when the aircraft rolled to the left, causing the left wing to struck a concrete wall. Out of control, the aircraft struck the roof of a house, then a second one and eventually crashed on a third residence. All three occupants were injured as well as one people on the ground.

Madeira Helicopters

The airplane was in instrument meteorological conditions and the pilot was cleared for an approach. As the airplane neared the final approach fix, the controller observed the airplane diverge from the approach course and change altitude rapidly. Shortly thereafter, the pilot said he had "all sorts of problems." The pilot requested and received vectors to an alternate airport. At 1748:29, the pilot was cleared for an ILS approach and was told to report when "established" on the approach. When asked if he was established on the ILS course, the pilot replied "I sure hope so." The controller observed the airplane descend below the published glide slope intercept altitude and advised the pilot to climb back to 2,000 feet. The pilot reported "I have problems." When asked the nature of the problem, the pilot reported "...I'm all over the place...I think I'm iced up..." Radar data indicated the airplane's radar track began following a left descending turn from 1,900 feet, about 1 minute before radar contact was lost. At 1751:33, the controller advised the pilot that his altitude was 1,000 feet, and requested that he climb to 3,000 feet. The pilot responded, "hey, I'm trying like hell." Radar contact with the airplane was lost about 1752, at 800 feet. A witness near the accident site stated he observed the airplane come out of the clouds, "wobbling" from side to side, make a "hard" left turn and strike the ground. He stated the engine was "loud" and seemed to be at "full throttle." Examination of the airplane did not reveal any pre impact mechanical malfunctions. The pilot purchased the accident airplane about 2 months prior to the accident. His total flight time in make and model was estimated to be about 200 hours. Airman's Meteorological Information (AIRMET) Zulu, Update 4, for Ice and Freezing Level was valid for the accident site area at the time of the accident. The AIRMET advised of occasional moderate rime/mixed icing in cloud in precipitation below 12,000 feet. The AIRMET reported the freezing level was from the surface to 4,000 feet. According to United States Naval Observatory astronomical data obtained for the accident site area, Sunset occurred at 1723, and the end of civil twilight was at 1751. The airplane was equipped with both wing leading edge and empennage de-icing boots. The switches for the de-icing boots were observed in the "Auto" position. The propeller de-ice and windshield anti-ice switches were observed in the "off" position.

Aircenter

A witness heard the airplane's engines make "sputtering" engine noises that cut out and quit prior to its impact with the wooded terrain. A sheriff's deputy who responded to the scene heard the pilot state the airplane ran out of fuel. The propeller blades of both engines displayed minor damage, and both propeller spinners were found intact and in place. No evidence of fuel odor nor fuel leakage was observed at the accident site. During examination, both engines were supplied fuel and a source of electricity. Each engine operated smoothly during testing at rpm ranging from idle to 1900.

Commander Northwest

The airplane collided with mountainous terrain during cruise after encountering turbulence and downdrafts associated with mountain wave conditions. According to Federal Aviation Administration (FAA) records, the pilot called the Reno Automated Flight Service Station at 0941 and filed an IFR flight plan, then asked for the winds aloft forecast, which was provided. The pilot did not request any additional weather briefing information for the flight. No other record was found that the pilot obtained additional weather forecast information from any official source associated with the FAA or the National Weather Service. At the time of the pilot's call to the Reno AFSS, several AIRMET weather advisories had been issued hours prior detailing warnings for turbulence and clear icing along the route of flight. The advisories warned of occasional moderate turbulence below 18,000 feet in moderately strong westerly winds especially in the vicinity of mountainous terrain. Clear Air Turbulence (CAT) between 18,000 and 40,000 feet was forecast over the area of the accident site due to jet stream wind shear and mountain wave activity. The pilot departed under visual flight rules (VFR) and picked up his instrument flight rules (IFR) clearance en route and climbed to 14,000 feet. The pilot later asked if he could maintain 12,500 feet. The controller advised him that the minimum IFR altitude on this segment of his route was 14,000 feet, and the pilot cancelled his IFR flight plan. The controller advised the pilot that he had lost radar contact, and instructed the pilot to squawk VFR and the pilot acknowledged the transmission. The last radar target was about 1/2 mile east of Eagle Peak (elevation 9,920 feet) in the Warner Mountains. Rescuers discovered the wreckage near the crest of Eagle Peak on November 23. Investigators found no anomalies with the airframe, engines, or propellers that would have precluded normal operation. The NWS had a full series of AIRMETs current over the proposed route of flight, which included mountain obscuration, turbulence, and icing. Analysis of the weather conditions disclosed a layer between 9,500 and 11,000 feet over the accident site area as having a high likelihood of severe or greater turbulence. A pilot on the same route of flight reported at 1127 that he was in instrument conditions at 11,000 feet, and experiencing light turbulence and light clear icing conditions. He also reported encountering updrafts of 2,000 feet per minute, which was indicative of mountain wave activity. A company pilot was in a second Aero Commander trailing the accident airplane and he reported that at 1147, at a position near the accident site, he encountered a severe downdraft. He applied full climb power, but as the airplane passed over the accident site position, the airplane continued to lose altitude even at maximum power. At 1159, he was able to gain altitude, and return to his assigned cruising altitude of 14,000 feet. The second Aero Commander was turbocharged, the accident airplane was not. Analysis showed that the topography of the area was critical in this case, given that the accident site was at an elevation of 9,240 feet on the eastern slope of Eagle Peak. The accident airplane's flight track was normal along the airway until immediately downwind of the higher terrain. As the flight approached the lee side of the mountain, it came under the influence of the mountain wave and first encountered an updraft and then a downdraft, which increased in amplitude as the flight progressed towards Eagle Peak. Eagle Peak was the tallest point along the Warner Mountain range and the steep slope of this terrain was significant when the mountain wave action was encountered. Such terrain features have been known to enhance the vertical downdrafts and updrafts associated with the most intense mountain wave turbulence.

Reefwatch Air Tours

The aircraft departed Cairns airport at 0707 Eastern Standard Time (EST) on a charter flight to Hicks Island. The aircraft was being operated under the Instrument Flight Rules (IFR) and the expected flight time was 2 hours. Shortly after takeoff the pilot requested an amended altitude of 4,000 ft. He indicated that he was able to continue flight with visual reference to the ground or water. Air Traffic Services (ATS) issued the amended altitude as requested. The IFR Lowest Safe Altitude for the initial route sector to be flown was 6,000 ft Above Mean Sea Level (AMSL). Data recorded by ATS indicated that approximately 13 minutes after departure, the aircraft disappeared from radar at a position 46NM north of Cairns. At the last known radar position the aircraft was cruising at a ground speed of 180 kts and at an altitude of 4,000 ft AMSL. An extensive search located the wreckage the following afternoon at a location consistent with the last known radar position, on the north-western side of Thornton Peak at an altitude of approximately 4,000 ft (1219 metres) AMSL. The aircraft was destroyed by impact forces and post-impact fire. The pilot and three passengers received fatal injuries. Thornton Peak is the third highest mountain in Queensland and is marked on topographic maps as 4,507 ft (1,374 metres) in elevation. Local residents reported that the mountain was covered by cloud and swept by strong winds for most of the year. The aircraft had been observed by witnesses approximately two minutes prior to impact cruising at high speed, on a constant north-westerly heading, in a wings level attitude and with flaps and landing gear retracted. They stated that the engines appeared to sound normal.

Gwen Bloomingdale

Two private pilots, citizens of the United States, who intended to participate in the “London - Sydney Air Race” set to take place 11 March to 7 April 2001, were operating the private aircraft, N272BB. The flight originated at Cape Cod in the United States and the aircraft was to be flown via Greenland, Iceland and Scotland to London, England, where the air-race was to commence. The aircraft arrived at Narsarsuaq, Greenland, on 4 March 2001 at 01:35 hrs. The next morning the pilots requested fuel and according to a statement by the Narsarsuaq airport personnel, 338 litres of LL100 avgas were put on the main fuel tanks that were filled. No fuel was put on the aircraft internal ferry-tank. The pilots received weather briefing and en-route information before departure and there was no anomalies noted by the airport personnel. The flight was planned at Fl-130 from Narsarsuaq, over the Greenland ice cap, to 62°N 040°W and then at FL110 to the border between the Greenland Soendrestrom Flight Information Region and the Reykjavik Flight Information Region. The takeoff from Narsarsuaq airport was at 14:29 hrs. The flight from Narsarsuaq Airport to Iceland was uneventful and the aircraft landed at Keflavik Airport Iceland at 18:59 hrs. Initially the pilots planned to continue the flight from Iceland that night but after studying the weather forecast they decided to stay overnight. At 19:50 hrs 447 litres of LL100 was put in the aircraft main tanks and the aircraft was then placed in a hangar. In the morning of 6 March 2001 the pilots arrived at Flight Operations Office at Keflavik Airport. The pilots were provided with current weather information and weather maps for the planned route and flight planning preparations for the flight to Stornoway, Scotland and onwards to London, England was completed. The plan was from Keflavik Airport (KEF) VOR, direct to ALDAN reporting point (62° 58' 49'' N 018° 45' 50'' W), direct to 61° N 012° 34' W, direct to 60° N 010° W, and direct to Stornoway. The flight level was 150 and the True Air Speed (TAS) was 145 kts. Prestwick in Scotland was filed as the alternate airport. The instrument flight plan was filed with the Air Traffic Control Centre in Reykjavik. The estimated flying time from KEF-VOR to ALDAN was 0:30 hrs, to 61° N 012° 34' W total 2:00 hrs and 02:30 hrs to 60° N 010° W. The planned time from Keflavik Airport to Stornoway was 4:00 hrs or the estimated time of arrival was at 12:19 hrs. The fuel endurance was given 10 hrs. The aircraft was cleared by ATC in accordance with the submitted instrument flight plan and assigned transponder code was 3575. The aircraft taxied out from the ramp at 08:08 hrs towards runway 11 and the take-off was at 08:19 hrs. After take-off the communication with Keflavik Approach Control was normal. The flight was then changed over to Reykjavik Area Control Centre (OACC) at 08:46 hrs and normal communication was established. The track to Aldan will take the aircraft overhead VM-NDB, 53 NM from KEF VOR, and then to Aldan, 120 NM from KEF VOR. Error was on the ATC slip indicating 30 minutes to Aldan. The controller changed that to 1:01, or estimate for Aldan at 09:20. The last communication with the crew took place at 08:49:50 when the aircraft was climbing slowly through about 14400 feet towards the planned cruising level, FL150. At 09:24:55 hrs Reykjavik OACC called N272BB in order to confirm the position, but there was no answer and repeated calls were in vain. The Shanwick Air Traffic Control Centre was notified at 09:29:15 hrs of the N272BB estimates and again at 09:38:01 hrs that ATC had lost contact with the aircraft. A subsequent replay of the ATC radar data showed that at 08:56 hrs the aircrafts target was lost from radar. The last plotted position was at 63° 32' 04'' N 020° 39' 36'' W, or about 8 NM from the south coast of Iceland. At 12:12 hrs a decision was taken to initiate a search in the area by available ships and fishing vessels in the area. An Icelandic Coast Guard helicopter was launched from Reykjavik into the search area at 12:32 hrs. At 13:49 hrs a debris from the missing aircraft and human remains were subsequently found floating on the ocean in a line spread north-westwards over a distance of about 5 NM from the point the target disappeared from radar. Both female pilots were killed.

Argentinian Air Force - Fuerza Aérea Argentina

The crew was completing a local training flight at Morón AFB. In unknown circumstances, the aircraft crashed in the swimming pool of a private residence located in the district of Moreno, west of the airbase. Both pilots (Cpt Reyna and Lt Pesci) were killed while there were no injuries on the ground.

Mexican Air Force - Fuerza Aérea Mexicana

Crashed in unknown circumstances.

Celso Tinoco Taxi Aéreo

The twin engine aircraft departed Recife-Guararapes Airport in the early morning on a round cargo trip with a load of medicines. Complete stops were made in Patos, Sousa, Mossoró, Caicó and Currais Novos. On the last leg from Currais Novos to Recife, while approaching Recife-Guararapes Airport, both engines failed simultaneously after a total flight of 3 hours and 50 minutes. The crew declared an emergency and attempted to land immediately when the aircraft collided with trees and power cables before crashing in a wooded area located 17 km short of runway 18. Both pilots were injured and the aircraft was damaged beyond repair.

Procafe

On approach to a private airstrip located near Santa Catalina La Tinta, the twin engine aircraft crashed in unknown circumstances 300 metres short of runway. The aircraft was destroyed and all six occupants were killed. Weather conditions at the time of the accident were poor with low clouds and rain falls. Thunderstorm activity was reported all along the route.

Mexican Air Force - Fuerza Aérea Mexicana

The twin engine aircraft departed Terán AFB in Tuxtla Gutiérrez at 0915LT on a liaison flight, carrying three passengers and two pilots. About 15 minutes later, the aircraft struck the slope of Mt Tzontehuitz located about 12 km northeast of San Cristóbal de Las Casas. All five occupants were killed.

Coral Sea Airlines

A Shrike Commander departed Horn Island on a charter flight to Saibai and Boigu Islands in accordance with the visual flight rules (VFR). The flight to Saibai took 32 minutes, and a further 13 minutes to Boigu Island. The aircraft then departed Boigu to return to Horn Island with an expected flight time of 35 minutes. The pilot reported that he had maintained 5,500 ft until commencing descent at 35 NM from Horn Island. He tracked to join final approach to runway 14 by 5 NM, reducing power at 1,500 ft. At 5 NM from the runway, the pilot extended the landing gear and approach flap and commenced a long final approach. When the aircraft was approximately 3 NM from the runway both engines commenced to surge, with the aircraft initially yawing to the right. The pilot commenced engine failure procedures and retracted the flaps. He tried a number of times to determine which engine was losing power by retarding the throttle for each engine, before deciding that the right engine was failing. The pilot shut down that engine and feathered the propeller. A short time later, when the aircraft was approximately 200 ft above the water, the left engine also lost power. The pilot established the aircraft in a glide, advised the passengers to prepare for a ditching, and transmitted a MAYDAY report on the flight service frequency before the aircraft contacted the sea. The aircraft quickly filled with water and settled on the seabed. All five occupants were able to escape and make their way ashore.

Aeronimbus

While on a cargo flight from La Rioja to Buenos Aires, the pilot encountered engine problems and decided to divert to Córdoba-Ambrosio Taravella Airport. On final approach, both engines failed and the pilot attempted an emergency landing when the aircraft crash landed in a field located 1,200 metres short of runway. It slid for few dozen metres before coming to rest in a grassy area. All four occupants escaped with minor injuries and the aircraft was damaged beyond repair.

Hill Construction

The flight was a dual instruction flight for the purpose of giving the dual student an orientation to the aircraft. Witnesses observed the aircraft flying from east to west at a slow speed. The right wing dropped and then returned to level. The right wing and nose dropped and the aircraft descended in a 45-60 degree nose down attitude. As the aircraft descended the wings rolled back and forth and something was observed moving on the outboard right wing area. The aircraft did not recover from the descent and crashed nose first at a slow speed into a swamp area. Post crash examination of the aircraft showed no evidence to indicate pre-crash mechanical malfunction or failure of the aircraft structure, flight controls, engines, propellers, or systems. The rudder trim was found in the neutral position and the elevator trim was found set for 70% of the aircraft nose up trim. Toxicology tests showed the dual student had .319 ug/ml of marihuana in urine, .010 ug/ml marijuana in blood, and 10.90 ug/ml of acetaminophen in blood. The pilot-in-command/flight instructor had 47.90 ug/ml acetaminophen and 89.20 ug/ml salicylate in urine. The pilot-in-command had hand injuries consistent with operating the aircraft's controls at the time of the accident. The dual student did not have hand injuries consistent with operation of the aircraft's controls.

GAM Air Service - General Aviation Maintenance

At approximately 0910 EST, the aircraft took off from runway 32 at Horn Island and commenced a normal climb. Shortly after, it adopted a nose-high attitude and commenced a wingover type manoeuvre to the right. Witnesses described the aircraft as being in a nose-low attitude, and at a height of approximately 600 ft to 700 ft above ground level after the completion of this manoeuvre. It then abruptly adopted a level attitude and rapidly entered a spin to the left. Witnesses on the ground reported that at approximately the same time as the aircraft entered the spin, engine power became asymmetric, with the right engine continuing to deliver considerable power. The aircraft continued to descend in a fully developed flat spin, with no observed signs of an attempt to recover. The impact was heard shortly after the aircraft descended behind vegetation to the north-west of the aerodrome. The accident was reported to Flight Service by radio at 0918. The wreckage was located on a beach approximately 2 km to the north-west of the aerodrome. The aircraft was destroyed by impact forces and the pilot sustained fatal injuries.

Eagle Air International

The crew was repatriating the aircraft from Kinshasa, Zaire, to the US. On the leg from Biggin Hill to Reykjavik, while approaching the Icelandic coast, the left engine failed. The crew declared an emergency and was cleared to divert to Vestmannaeyjar Airport. While circling for landing, the right engine failed as well. The crew lost control of the airplane that crashed in the sea few km offshore. Both occupants were killed.

Michael Stanton-Hicks

The pilot had the waste gates on the turbocharges adjusted and wanted to test fly the airplane after the work was completed. The airplane departed and had reached an altitude of about 1,000 feet when witnesses heard an engine sputter. The airplane was seen making a left turn and enter a nose low, left spin before impacting the terrain. A tear down of the left engine revealed that the exhaust valves in cylinders #3 and #5 were burnt through at the valve head. The #5 exhaust valve had a deep preexisting deep mark on the valve stem. The failures of both valves were sufficient enough to cause a power failure in the left engine. The pilot, sole on board, was killed.

Australian Government

When the survey aircraft failed to arrive at the destination, and on expiry of the SAR time, a search was commenced. Wreckage of the aircraft was subsequently found on the eastern slope of Mt Barren Jack, to the north west of the mouth of Carrolls Creek, and on the planned track for the survey operation. Observers at the Burrinjuck reservoir near the mouth of Carrolls Creek described the weather in the accident area at the time as black clouds spilling over and obscuring the mountain tops. The aircraft collided with trees on the side of the mountain, while banked steeply to the right and in a tail low attitude. The pilot was thrown from the aircraft during the impact sequence. Medical opinion held that there was no evidence of body trauma consistent with the seat belt being fastened at the time of impact. The flight was completed on behalf of the Bureau of Mineral Resources (BMR) and both occupants were killed.

Jordan, Parry y Perez Importaciones

Crashed in unknown circumstances in the sea off Caldera. Both pilots were killed.

Safcol Seafoods

The pilot was temporarily replacing the pilot who normally flew the aircraft. After arriving at Kidston he checked the fuel quantity gauge and decided that there was sufficient fuel on board for the return flight. As the aircraft approached top of climb, the pilot found that the fuel gauge indicated a lower fuel quantity than he had expected. He re-checked the indicated quantity after the aircraft was established in cruise and decided that sufficient fuel still remained to complete the planned flight. Shortly after passing Mt Garnet both engine fuel flow gauges began to fluctuate and the engines began to surge. The pilot immediately turned the aircraft towards the Mt Garnet strip, but shortly afterwards both engines failed. The pilot attempted to glide the aircraft to the strip, but it collided with trees and came to rest about one kilometre from the runway 27 threshold. All three occupants escaped with minor injuries and the aircraft was damaged beyond repair.

TTA - Sociedade de Transportes e Trabalhos Aéreos

En route, the twin engine airplane encountered poor weather conditions and crashed near Louws Creek. One occupant was seriously injured while two others were killed.

Mexican Air Force - Fuerza Aérea Mexicana

Crashed in a hilly terrain in Tolcayuca while completing a training flight. All three pilots were injured.

Safcol Seafoods

The flight was planned to check the onboard survey equipment. After departing Jandakot the aircraft operated to the south of the airfield for about 80 minutes before the pilot advised that he would be extending his operation to the east over the Darling Ranges. The aircraft was then sighted, by several witnesses, over the foothills heading in an easterly direction. These witnesses reported that the engines were not operating normally. A short time later, the aircraft was observed to pass over the dam wall at an altitude of about 25 feet and head down a valley in a northerly direction before disappearing from sight. An inspection of the wreckage indicated that the aircraft had collided with two 30 metre high trees, in a nose high attitude at a low forward airspeed, before falling to the ground below the trees. At impact neither engine was delivering power. The fuel system, which was found to be relatively intact, contained only nine litres of fuel.

Iowa State University

N81589 was following a Boeing 727 on ILS approach in IFR conditions. Approximately 2.5 miles from runway, N81589 suddenly deviated left nearly 90°. 39 seconds later, pilot reported he encountered severe turbulences, then said he was trying to climb. N81589 subsequently flew thru tree tops on rising terrain for approximately 2 city blocks, then hit power lines and a pole and crashed against a tree. No evidence of turbulences due to weather at/near approach altitude. Investigation showed 4.7 miles separation between aircraft when the 727 passed the point of deviation (pod). At pod, the 727 was on the ILS glide slope at 850 feet; N81589's altitude was not determined. Wind was from 120° at 3 to 6 knots, shifting more southerly withalt. Prevailing visibility was 1/2 mile; RVR for runway 12L was 6,000 feet; light rime icing was reported. Witnesses heard power interruption of one engine at pod; but there was no indication of power loss where aircraft hit trees. Radar data showed aircraft slowed to 80 knots at pod, accelerated to 100 knots during deviation, slowed to 70 knots before impact; vmca was 74 knots. Safety board believes the pilot most likely lost control due to slow speed and light airframe icing; possibly encountered wake turbulences. No reason found for loss of engine power. All seven occupants were killed.

Potlatch Corporation

The pilot expected the weather to be below minimums but flew the approach anyway. He did not have a second pilot on board per company rules. The aircraft collided with trees about 3 miles from the approach end of runway 17. The pilot, sole on board, was killed.

Private American

After takeoff from Norfolk Island Airport, while climbing, the twin engine aircraft lost height and crashed into the sea. The pilot, sole on board, was killed.

Safcol Seafoods

After takeoff from Merimbula Airport, while climbing, the twin engine airplane went out of control and crashed in the marina of Merimbula. The pilot, sole on board, was killed.

Wilbur's Flight Operations

After takeoff from Healy, while climbing, the pilot lost control of the airplane that struck trees and crashed near the airport. The pilot was injured and the aircraft was destroyed.

Tasair

Due to industrial action, normal domestic airline services had been suspended. The pilot hired the aircraft to convey persons stranded by the strike between Hobart and Melbourne. He submitted a flight plan for the proposed return flight to Melbourne that nominated operations under the Instrument Flight Rules, although he did not hold an appropriate Instrument Rating. The flight to Melbourne was completed without known incident. After refuelling the aircraft and engaging five passengers, the return flight was commenced. A fare was paid by each passenger although the pilot did not hold either a Charter Licence or an appropriate pilot licence. There was considerable cloud in the vicinity of Hobart Airport which, at 1800 hours, was recorded as one okta stratus, base 800 feet; five oktas stratocumulus, base 3000 feet; five oktas altocumulus, base 11,000 feet. The surface wind was a light westerly, and the runway in use was Runway 30. There were rain showers in the area and the runway was wet. The end of daylight was at approximately 1748 hours. When the pilot of VH-EXQ contacted Hobart Tower at approximately 1800 hours, he reported on descent to 7000 feet and 50km from the airport. As the aircraft proceeded, the Aerodrome Controller cleared it for further descent in stages, to provide vertical separation from a preceding aircraft. The only Instrument Landing System (ILS) approach at Hobart Airport was aligned with Runway 12 and the tailwind for a landing in that direction was only two or three knots. In order to expedite their arrivals, the Aerodrome Controller offered the pilot s of both approaching aircraft the option of a straight-in ILS approach to Runway 12 instead of a circling approach to the into-wind Runway 30. Both pilots accepted. At 1803 hours, the preceding aircraft was cleared for an ILS approach. The pilot of VH-EXQ was then advised to expect the same clearance but, to ensure continued separation from the other aircraft, was instructed to make one circuit of the holding pattern at Tea Tree Locator, a navigational radio aid west of the airport. The pilot misunderstood this instruction and, on reaching Tea Tree at about 1805 hours, he continued towards the airport. At 1807 hours, the Aerodrome Controller cleared VH-EXQ for an ILS approach. The pilot acknowledged this instruction in the normal manner and did not advise that he had already commenced the approach. In descending towards the airport the pilot had maintained a high airspeed of nearly 200 knots. From overhead Tea Tree he could see the lights of the preceding aircraft and endeavoured to reduce his speed so as to maintain separation. As a result, the aircraft was still very high as it approached the runway. This was noted by the Aerodrome Controller and, at 1810 hours, he asked the pilot whether he would be able to land on Runway 12 or would prefer to make an approach for Runway 30. The pilot chose the latter and was cleared to a right base leg for Runway 30. The approach to Runway 12 was abandoned and the aircraft turned left onto a close right downwind leg for Runway 30. The landing gear, which had been extended, and the flaps, which had been set at 1/4 down, were not moved from these positions. The pilot reported that at some stage of the approach to Runway 30 he moved the throttles forward to increase power and maintain height. In response the aircraft yawed slightly to the right. Both propeller levers were then pushed fully forward, both throttles were fully opened and the mixture controls were checked in the full-rich position. The aircraft again swung to the right. Identifying this as evidence that the right engine had failed, and after checking from the tachometer that the right propeller was windmilling at about 1500 RPM, the pilot feathered the right propeller and selected the landing gear and flaps up. He believed that he carried out the feathering action at a height of about 300 feet and an airspeed of about 100 knots. At this time the aircraft was heading southwest, towards Single Hill (elevation 680 feet) on the shore of Frederick Henry Bay. The pilot reported that the aircraft would not maintain height or airspeed and he therefore turned left to avoid the hill. The wings were then held level until the aircraft touched down in the bay. After the aircraft turned right at a close base leg position, but then straightened on a southwesterly heading instead of continuing the turn onto final approach, the Aerodrome Controller asked the pilot to confirm that he was tracking for Runway 30. This transmission was not answered and the Aerodrome Controller again called the aircraft. The pilot then reported that he was having trouble with the right engine and he was going to feather. This transmission was made as the aircraft was approaching Single Hill, just before it turned left and descended from view. There were no further transmissions from the aircraft despite a number of calls by the Aerodrome Controller. The Distress Phase of Search and Rescue (SAR) procedures was declared at 1815 hours. The appropriate emergency services were alerted including a helicopter that was on standby for SAR operations. All six occupants were rescued while the aircraft sank and was lost.