Pilot Debrief

GRUMMAN ACFT ENG COR-SCHWEIZER G 164B near Clemville, TX — 2013-09-04

Final reportCEN13LA551
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Date
2013-09-04
Location
Clemville, TX, USA
Airport
NONE
Aircraft
GRUMMAN ACFT ENG COR-SCHWEIZER G 164B
Registration
N8251K
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Landing

Probable cause

The uncommanded inflight application of parking brake due to a loose valve, which resulted in a noseover during landing.

NTSB narrative

While inbound for landing the pilot stepped on the brake pedals and the "brakes felt really tight," so he quit applying pressure. During the landing roll, immediately after touchdown, the tailwheel-equipped airplane slowed quickly, nosed over, impacted the ground, and came to rest inverted. A postaccident examination of the parking brake revealed a loose valve, which allowed uncommanded movement of the valve into the locked position.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have addressed brake issues before the flight.

NTSB coding

Evidence available

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

Docket documents5

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