Tuesday, December 22, 2015

Piper PA-18A Super Cub, N2791P: Accident occurred December 21, 2015 in Girdwood, Alaska


FAA Flight Standards District Office: FAA Anchorage FSDO-03

NTSB Identification: GAA16CA102
14 CFR Part 91: General Aviation
Accident occurred Monday, December 21, 2015 in Girdwood, AK
Probable Cause Approval Date: 04/05/2016
Aircraft: PIPER PA 18A, registration: N2791P
Injuries: 2 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

According to the pilot, the airplane departed the runway and climbed to 3000 feet above ground level. She reported that while maneuvering, the airplane lost engine power. After several attempts to restart the engine, the pilot made a forced landing on a highway bridge. She reported that during the landing roll, the airplane's right wing struck a sign that was affixed to the bridge. 

According to the pilot, at the time of the accident, there were twenty gallons of fuel on board the airplane. She reported that the airframe and power plant mechanic removed approximately two cups of water from the fuel tanks after the accident in preparation for the airplane's recovery. The airplane sustained substantial damage to the right wing spar and aileron.

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

Fuel contamination resulting in the loss of engine power, a forced landing on a highway, and subsequent right wing impact with highway signage.

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