Pilot Debrief

AERONCA 11AC near Wapakoneta, OH — 2021-07-05

Final reportCEN21LA310
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Date
2021-07-05
Location
Wapakoneta, OH, USA
Airport
AXV
Aircraft
AERONCA 11AC
Registration
N9149E
Category
Airplane
Highest injury
None
Fatalities
0

Probable cause

The pilot’s inadequate engine hand propping procedure resulting in the unoccupied airplane’s unintended movement and subsequent impact with a hangar.

NTSB narrative

The airplane was not equipped with an electrical system and the engine was started by hand propping. The pilot reported that he did not have a passenger to hold the brakes in the cockpit during engine start, nor did he use wheel chocks and/or tether the tail to a fixed object because he thought using the airplane’s parking brake would keep the airplane stationary after the engine had started. Before the engine was hand propped, the pilot set the throttle about ¼” to ½” forward of the idle position, but the engine’s speed was much higher than he had expected after the engine started. The unoccupied airplane initially moved forward before it entered a left turn on the ramp in front of a row of hangars. Although the pilot was able to reach into the cockpit to move the throttle to idle, the airplane continued in the left turn and struck a closed hangar door, resulting in substantial damage to the right wing. The pilot did not report any mechanical malfunctions with the airplane that would have precluded normal operation.

NTSB coding

Evidence available

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

Docket documents2

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