Pilot Debrief

MOONEY AIRCRAFT CORP. M20K near Akron, OH — 2016-05-10

Final reportCEN16LA178
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Date
2016-05-10
Location
Akron, OH, USA
Airport
CAK
Aircraft
MOONEY AIRCRAFT CORP. M20K
Registration
N57535
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Takeoff roll

Probable cause

A missing bolt in the nose landing gear assembly, which resulted in the airplane suddenly turning left and the pilot's inability to maintain directional control during a crosswind takeoff.

NTSB narrative

The pilot stated that, during the takeoff roll, the airplane veered to the left and he then reduced engine power and applied full right rudder to correct. The airplane exited the runway and struck airport lighting, resulting in substantial damage. The pilot indicated a crosswind of about nine knots was reported about the time of the takeoff. Postaccident examination of the nose landing gear assembly revealed that the bolt that attached the nose landing gear retraction link to the nose gear truss assembly was missing. The bolt holes were intact and not deformed, consistent with the bolt exiting the holes because the nut was no longer retaining the bolt, rather than the bolt shearing in place. According to the manufacturer, it was possible that without the bolt, the nose wheel could be allowed to turn suddenly, and that the pilot's steering inputs would be ineffective. The investigation could not determine where or when the bolt was liberated from the nose landing gear.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have aborted takeoff upon initial left veer.

NTSB coding

Evidence available

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

Docket documents9

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