NTSB Identification: ANC06LA093.
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Accident occurred Saturday, July 08, 2006 in Fairbanks, AK
Probable Cause Approval Date: 02/26/2007
Aircraft: Piper PA-31, registration: N41185
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 airline transport certificated pilot was conducting a maintenance test flight related to the airplane's navigation instrumentation under Title 14, CFR Part 91. In a written statement the pilot reported that when he returned from the maintenance flight the tower asked him to expedite the landing due to traffic. He said he put the flaps and gear down, and checked the nose gear in a mirror on the left engine. He indicated that in the mirror, the nose gear appeared to be "extending in a normal manner." He reported that upon touchdown all 3 landing gear collapsed. The director of operations said the airplane was taken to a maintenance facility where landing gear extension and retraction tests were performed, and no anomalies were noted. Photographs provided by the operator showed no damage to the left or right main landing gear tires, wheels, or landing gear leg doors. The photographs do show abrasions and scratches parallel to the fuselage's longitudinal axis on the exterior of both the left and right main landing gear wheel doors, consistent with ground contact in the closed (gear retracted) position. An additional photograph showed abrasions and scratches on the exterior of both nose wheel doors parallel to the longitudinal axis of the fuselage. In a written statement the operator suggested that the gear unsafe horn should be wired through the audio panel, so as to be more easily heard by pilots wearing noise attenuating headsets. The airplane received structural damage to the bottom of the fuselage, stringers, and bulkheads.




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

The pilot's inadvertent landing with the landing gear retracted, which resulted in structural damage to the airplane.

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