Pilot Debrief

SCHWEIZER AIRCRAFT CORP G-164B near Marysville, CA — 2011-06-21

Final reportWPR11LA273
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Date
2011-06-21
Location
Marysville, CA, USA
Airport
MYV
Aircraft
SCHWEIZER AIRCRAFT CORP G-164B
Registration
N3627G
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Takeoff roll

Probable cause

The separation of the right main landing gear during takeoff, due to fatigue.

NTSB narrative

During the takeoff roll of the aerial application flight, the right main landing gear separated from the airplane's fuselage. The pilot continued the takeoff from the dirt airstrip, and elected to land at a local airport. During the landing roll, the airplane departed the runway sustaining substantial damage to the lower left wing. Examination of the right main landing gear spring leg revealed that the outboard segment had separated from the airplane at its root, adjacent to the airframe support structure. The fracture surfaces indicated a fatigue failure emanating from an area of corrosion on the lower surface of the spring.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have aborted takeoff after right main landing gear failure.

NTSB coding

Evidence available

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

Docket documents4

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