White Plains - Portland
Flight / Schedule
White Plains - Portland
Aircraft
Cessna 402Registration
N402RC
MSN
402B-1218
Year of Manufacture
1977
Operator
My PlaneDate
April 10, 2011 at 06:05 PM
Type
CRASHFlight Type
Private
Flight Phase
Landing (descent or approach)
Crash Site
City
Crash Location
Biddeford Maine
Region
North America • United States of America
Coordinates
43.4926°, -70.4534°
Crash Cause
Human factor
Narrative Report
On April 10, 2011 at 06:05 PM, White Plains - Portland experienced a crash involving Cessna 402, operated by My Plane, with the event recorded near Biddeford Maine.
The flight was categorized as private and the reported phase was landing (descent or approach) at a city crash site.
1 people were known to be on board, 1 fatalities were recorded, 0 survivors were identified or estimated. This corresponds to an estimated fatality rate of 100.0%.
Crew on board: 1, crew fatalities: 1, passengers on board: 0, passenger fatalities: 0, other fatalities: 0.
The listed crash cause is human factor. The multi-engine airplane was being repositioned to its base airport, and the pilot had requested to change the destination, but gave no reason for the destination change. Radar data indicated that the airplane entered the left downwind leg of the traffic pattern, flew at pattern attitude, and then performed a right approximate 250-degree turn to enter the final leg of the approach. During the final leg of the approach, the airplane crashed short of the runway into a house located in a residential neighborhood near the airport. According to the airplane's pilot operating handbook, the minimum multi-engine approach speed was 95 knots indicated airspeed (KIAS), and the minimum controllable airspeed was 82 KIAS. According to radar data, the airplane's ground speed was about 69 knots with the probability of a direct crosswind. Post accident examination of the propellers indicated that both propellers were turning at a low power setting at impact. During a controlled test run of the right engine, a partial power loss was noted. After examination of the throttle and control assembly, two o-rings within the assembly were found to be damaged. The o-rings were replaced with comparable o-rings and the assembly was reinstalled. During the subsequent test run, the engine operated smoothly with no noted anomalies. Examination of the o-rings revealed that the damage was consistent with the o-rings being pinched between the corner of the top o-ring groove and the fuel inlet surface during installation. It is probable that the right engine had a partial loss of engine power while on final approach to the runway due to the damaged o-ring and that the pilot retarded the engine power to prevent the airplane from rolling to the right. The investigation found no mechanical malfunction of the left engine that would have prevented the airplane from maintaining the published airspeed.
Aircraft reference details include registration N402RC, MSN 402B-1218, year of manufacture 1977.
Geospatial coordinates for this crash are approximately 43.4926°, -70.4534°.
Fatalities
Total
1
Crew
1
Passengers
0
Other
0
Crash Summary
The multi-engine airplane was being repositioned to its base airport, and the pilot had requested to change the destination, but gave no reason for the destination change. Radar data indicated that the airplane entered the left downwind leg of the traffic pattern, flew at pattern attitude, and then performed a right approximate 250-degree turn to enter the final leg of the approach. During the final leg of the approach, the airplane crashed short of the runway into a house located in a residential neighborhood near the airport. According to the airplane's pilot operating handbook, the minimum multi-engine approach speed was 95 knots indicated airspeed (KIAS), and the minimum controllable airspeed was 82 KIAS. According to radar data, the airplane's ground speed was about 69 knots with the probability of a direct crosswind. Post accident examination of the propellers indicated that both propellers were turning at a low power setting at impact. During a controlled test run of the right engine, a partial power loss was noted. After examination of the throttle and control assembly, two o-rings within the assembly were found to be damaged. The o-rings were replaced with comparable o-rings and the assembly was reinstalled. During the subsequent test run, the engine operated smoothly with no noted anomalies. Examination of the o-rings revealed that the damage was consistent with the o-rings being pinched between the corner of the top o-ring groove and the fuel inlet surface during installation. It is probable that the right engine had a partial loss of engine power while on final approach to the runway due to the damaged o-ring and that the pilot retarded the engine power to prevent the airplane from rolling to the right. The investigation found no mechanical malfunction of the left engine that would have prevented the airplane from maintaining the published airspeed.
Cause: Human factor
Occupants & Outcome
Crew On Board
1
Passengers On Board
0
Estimated Survivors
0
Fatality Rate
100.0%
Known people on board: 1
Operational Details
Schedule / Flight
White Plains - Portland
Operator
My PlaneFlight Type
Private
Flight Phase
Landing (descent or approach)
Crash Site
City
Region / Country
North America • United States of America
