NTSB Identification: LAX86LA164.
The docket is stored on NTSB microfiche number 31953.
Accident occurred Thursday, April 03, 1986 in TUCSON, AZ
Aircraft: CESSNA 150H, registration: N50306
Injuries: 1 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.

THE PILOT STATED THAT AFTER LOWERING THE NOSEWHEEL DURING THE LANDING, HE HEARD A 'POPPING SOUND' AND IMMEDIATELY RAISED THE NOSEWHEEL OFF THE RUNWAY. AFTER THE AIRCRAFT SLOWED AND THE PILOT COULD NO LONGER HOLD THE NOSEWHEEL OFF, THE AIRCRAFT VEERED TO THE LEFT AS SOON AS THE NOSEWHEEL TOUCHED DOWN. THE AIRCRAFT THEN WENT INTO A DITCH AT THE LEFT SIDE OF THE RUNWAY AND NOSED OVER. AN INVESTIGATION REVEALED THAT A NUT SECURING THE NOSEWHEEL AXLE 'HAD BACKED OFF,' ALLOWING THE NOSEWHEEL TO BECOME MISALIGNED.

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

LANDING GEAR,AXLE..LOOSE


Contributing Factors

TERRAIN CONDITION..DITCH



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