Pilot Debrief

CESSNA 170B near San Luis Obispo, CA — 2014-03-07

Final reportWPR14LA134
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Date
2014-03-07
Location
San Luis Obispo, CA, USA
Airport
KSBP
Aircraft
CESSNA 170B
Registration
N2252D
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Landing

Probable cause

Corrosion of the bulkhead assembly in the left main landing gearbox area, which resulted in the structural failure of the bulkhead and the subsequent landing gear collapse.

NTSB narrative

The pilot reported that, shortly after a normal touchdown, the left main landing gear (MLG) collapsed, which resulted in substantial damage to the gearbox area. Review of videos from three surveillance cameras with different views of the landing corroborated the pilot's report that the landing was normal. Examination of the airplane revealed evidence of corrosion of the left MLG bulkhead assembly in the damaged gearbox area. The corrosion likely weakened the bulkhead's structure and resulted in the collapse of the left MLG.

Analysis

Primary failure mode
Mechanical failure

NTSB coding

Evidence available

  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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