NTSB Identification: SEA00LA070.
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Accident occurred Wednesday, April 12, 2000 in AUBURN, WA
Probable Cause Approval Date: 12/04/2000
Aircraft: Cessna 150M, registration: N9301U
Injuries: 4 Minor.
NTSB investigators may have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The pilot, accompanied by a passenger, was conducting a low approach at full flaps (40 degrees) in the Cessna 150M to a minimum altitude of approximately five feet AGL above the runway. Following the go-around, he added full power but left the flaps fully extended. The aircraft failed to climb, and approaching high tension power lines across his flight path he made a gradual right turn, ultimately colliding with a second set of power lines perpendicular to his flight path and approximately 55 feet above ground. The Pilot's Operating Handbook (POH) for the aircraft discussed flap settings for takeoff and specifically stated 'flap deflections greater than 10 degrees are not approved for takeoff.' Additionally, the POH also discussed balked landing procedures stating 'in a balked landing (go-around) climb, the wing flap setting should be reduced to 20 degrees immediately after full power is applied. The POH balked landing checklist included a requirement to retract the flaps to '20 DEGREES.' Post-crash examination revealed that the flaps were fully extended.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to follow aircraft operating procedures by not raising the flaps during the go-around maneuver. Contributing factors were the pilot's failure to adhere to the balked landing checklist (FLAPS to 20) resulting in degraded climb performance, and the power lines in his flight path. Full narrative available
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