Muskogee - Albuquerque

A pilot (whose instrument currency could not be determined) took off at night in IMC. Shortly after takeoff, the aircraft crashed about 1.5 mile from the departure end of the runway. There was evidence that it impacted in an 85° right bank, nose down attitude at high speed. No preimpact part failure was found during the investigation; however, during a pre-purchase inspection on 10/16/90, several discrepancies were noted. These included an inop flight director, an autopilot malfunction and a misrigged flight control system that allowed the control wheel to indicate a left turn when the aircraft was in level flight. There was no record of these being repaired. Records showed the pitot-static system was last tested on 3/24/88. The pilot was taking sine-aid and tylenol for a chronic sinus infection. Although tox checks indicated the presence of 50.7 ug/ml of pseudoephedrine and 36.4 ug/ml of acetaminophen in the pilot's urine, none was found in his blood. The sinus cond could have affected the pilot's balance and equilibrium. All six occupants were killed.

Flight / Schedule

Muskogee - Albuquerque

Registration

N421H

MSN

421B-0516

Year of Manufacture

1973

Date

January 5, 1991 at 08:43 PM

Type

CRASH

Flight Type

Private

Flight Phase

Takeoff (climb)

Crash Site

Airport (less than 10 km from airport)

Crash Location

Muskogee Oklahoma

Region

North America • United States of America

Coordinates

35.6630°, -95.3928°

Crash Cause

Human factor

Narrative Report

On January 5, 1991 at 08:43 PM, Muskogee - Albuquerque experienced a crash involving Cessna 421B Golden Eagle II, operated by Ronnie Ray Shanks, with the event recorded near Muskogee Oklahoma.

The flight was categorized as private and the reported phase was takeoff (climb) at a airport (less than 10 km from airport) crash site.

6 people were known to be on board, 6 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: 5, passenger fatalities: 5, other fatalities: 0.

The listed crash cause is human factor. A pilot (whose instrument currency could not be determined) took off at night in IMC. Shortly after takeoff, the aircraft crashed about 1.5 mile from the departure end of the runway. There was evidence that it impacted in an 85° right bank, nose down attitude at high speed. No preimpact part failure was found during the investigation; however, during a pre-purchase inspection on 10/16/90, several discrepancies were noted. These included an inop flight director, an autopilot malfunction and a misrigged flight control system that allowed the control wheel to indicate a left turn when the aircraft was in level flight. There was no record of these being repaired. Records showed the pitot-static system was last tested on 3/24/88. The pilot was taking sine-aid and tylenol for a chronic sinus infection. Although tox checks indicated the presence of 50.7 ug/ml of pseudoephedrine and 36.4 ug/ml of acetaminophen in the pilot's urine, none was found in his blood. The sinus cond could have affected the pilot's balance and equilibrium. All six occupants were killed.

Aircraft reference details include registration N421H, MSN 421B-0516, year of manufacture 1973.

Geospatial coordinates for this crash are approximately 35.6630°, -95.3928°.

Fatalities

Total

6

Crew

1

Passengers

5

Other

0

Crash Summary

A pilot (whose instrument currency could not be determined) took off at night in IMC. Shortly after takeoff, the aircraft crashed about 1.5 mile from the departure end of the runway. There was evidence that it impacted in an 85° right bank, nose down attitude at high speed. No preimpact part failure was found during the investigation; however, during a pre-purchase inspection on 10/16/90, several discrepancies were noted. These included an inop flight director, an autopilot malfunction and a misrigged flight control system that allowed the control wheel to indicate a left turn when the aircraft was in level flight. There was no record of these being repaired. Records showed the pitot-static system was last tested on 3/24/88. The pilot was taking sine-aid and tylenol for a chronic sinus infection. Although tox checks indicated the presence of 50.7 ug/ml of pseudoephedrine and 36.4 ug/ml of acetaminophen in the pilot's urine, none was found in his blood. The sinus cond could have affected the pilot's balance and equilibrium. All six occupants were killed.

Cause: Human factor

Occupants & Outcome

Crew On Board

1

Passengers On Board

5

Estimated Survivors

0

Fatality Rate

100.0%

Known people on board: 6

Operational Details

Schedule / Flight

Muskogee - Albuquerque

Flight Type

Private

Flight Phase

Takeoff (climb)

Crash Site

Airport (less than 10 km from airport)

Region / Country

North America • United States of America

Aircraft Details

Registration

N421H

MSN

421B-0516

Year of Manufacture

1973