Pilot Debrief

Larry Bingham LB-1 near Haines, AK — 2021-12-15

Final reportANC22LA011
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Date
2021-12-15
Location
Haines, AK, USA
Airport
9AA9
Aircraft
Larry Bingham LB-1
Registration
N555LB
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Initial climb

Probable cause

A partial loss of engine power for reasons that could not be determined based on available information, which resulted in a precautionary landing and impact with snow.

NTSB narrative

After performing a preflight inspection and a successful run-up of the engine, the pilot initiated a takeoff. After becoming airborne, the engine “faltered.” The pilot lowered the nose, decreased the flaps, and confirmed that the throttle was set at the full power position, but the airplane continued to descend. During a precautionary landing, the airplane bounced; on the second touchdown the tires sunk into the snow and the airplane nosed over, coming to rest inverted. The pilot reported that he did not believe there was any type of internal engine failure. A postaccident engine run revealed no evidence of any preaccident mechanical malfunctions or failures that would have precluded normal operation. A review of the weather conditions found that they were not conducive to carburetor ice. A reason for the partial loss of engine power could not be determined based on the available information.

Analysis

Primary failure mode
Engine power loss
First missed decision gate
Pilot could have aborted takeoff after engine faltered during initial climb.

NTSB coding

Evidence available

  • Photos
  • 7 docket documents
View NTSB final reportView NTSB docket

Docket documents7

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