NTSB Identification: LAX95LA274.
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Accident occurred Friday, July 28, 1995 in LONG BEACH, CA
Probable Cause Approval Date: 02/08/1996
Aircraft: NORTH AMERICAN AT-6F, registration: N3173L
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

AS THE PILOT ROLLED OUT ON FINAL HE RECOGNIZED A CROSSWIND AND CRABBED INTO THE WIND ANTICIPATING A CROSSWIND LANDING. AFTER TOUCHDOWN, THE AIRCRAFT VEERED SHARPLY TO THE RIGHT AND THE LEFT MAIN LANDING GEAR COLLAPSED. THE AIRCRAFT THEN SLID OFF THE RIGHT SIDE OF THE RUNWAY STRIKING A SIGN ON A CONCRETE BASE. THE PILOT WAS APPLYING RIGHT AILERON AND LEFT RUDDER TO COMPENSATE FOR THE CROSSWIND DURING THE LANDING. THE MECHANICAL DOWN LOCK FOR THE LEFT MAIN LANDING GEAR WAS FOUND BROKEN AND DISPLACED. THE MECHANICAL INDICATOR FOR GEAR POSITION DID NOT SHOW THE LEFT MAIN GEAR TO BE IN THE DOWN AND LOCKED POSITION. THE BOLTS ATTACHING THE DOWN LOCK WERE NOT PROPERLY SEATED, ALLOWING THE DOWN LOCK TO SHIFT FROM ITS MOUNTED POSITION.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

the failure of the left main landing gear locking mechanism to fully seat in the 'down' position due to loose attachment bolts.

Full narrative available

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