Pilot Debrief

STINSON V77 near Tillamook, OR — 2011-09-03

Final reportWPR11LA427
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Date
2011-09-03
Location
Tillamook, OR, USA
Airport
TMK
Aircraft
STINSON V77
Registration
N9112H
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Taxi

Probable cause

The pilot’s loss of directional control while taxiing in a gusting tailwind.

NTSB narrative

The pilot was taxiing for takeoff in a gusting left-quartering tailwind. Suddenly, the airplane rotated over 90 degrees to the left. The right main landing gear collapsed, and the airplane dropped onto its right wing and horizontal stabilizer. The pilot reported that he believed the loss of control was due to a strong gust of wind. Although postaccident visual examination of the airplane revealed some areas of corrosion on the fractured right main landing gear pivot bushing, a follow up laboratory examination determined that the pivot bushing failed due to overload. No evidence of preexisting fatigue cracking was found.

Analysis

Primary failure mode
Loss of control
First missed decision gate
Pilot could have aborted taxi after feeling strong gusts of wind.

NTSB coding

Evidence available

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

Docket documents7

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