Casualties unknown

Aircraft Crashes in Box Canyon After Filing VFR Flight Plan Near Excursion Inlet (N4075W)

Gustavus, AK, US

On August 15, 1991, a Piper PA-32 (registration N4075W) operated by Haines Airways was involved in an aviation accident near Gustavus, AK. Investigators recorded the probable cause as: VFR FLIGHT BY THE PILOT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC), AND THE PILOT'S FAILURE TO MAINTAIN SUFFICIENT ALTITUDE AND/OR CLEARANCE FROM MOUNTAINOUS TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE WEATHER AND TERRAIN CONDITIONS. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

After departing Gustavus Airport and filing a VFR flight plan toward Excursion Inlet, an aircraft crashed on steep terrain in a box canyon. Heavy fog, clouds, and darkness hampered search efforts; wreckage located the next morning. Propeller damage consistent with impact.

Flight Departure

After departing from Gustavus Airport, the pilot turned the aircraft toward Excursion Inlet and air-filed a visual flight rules (VFR) flight plan. Following the filing of the flight plan, no further radio transmissions were received from the aircraft.

Search and Wreckage

A search was initiated, but heavy fog, clouds, and darkness hampered the efforts. The wreckage was located the next morning, where the aircraft had crashed on steep rising terrain in a box canyon area. Impact occurred at the end of a valley that began near Excursion Inlet. The elevation of the crash site was approximately 4,000 feet, and terrain in that area rose to about 4,600 feet.

Weather Conditions

Two other pilots who departed Haines near the time of the accident reported that the ceiling was broken to overcast at about 4,000 feet. The mountain tops were reportedly obscured, but visibility below the clouds was about 20 miles.

Damage

The propeller blades were found with deep chordwise scars and leading edge/rotational damage.

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Frequently asked questions

What happened in the 15 Aug 1991 Piper PA-32 accident near Gustavus, AK?

After departing Gustavus Airport and filing a VFR flight plan toward Excursion Inlet, an aircraft crashed on steep terrain in a box canyon. Heavy fog, clouds, and darkness hampered search efforts; wreckage located the next morning. Propeller damage consistent with impact.

What aircraft was involved and where did it happen?

The accident on 15 Aug 1991 involved a Piper PA-32, registration N4075W, operated by Haines Airways, at Gustavus, AK.

What was the probable cause of the accident?

VFR FLIGHT BY THE PILOT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC), AND THE PILOT'S FAILURE TO MAINTAIN SUFFICIENT ALTITUDE AND/OR CLEARANCE FROM MOUNTAINOUS TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE WEATHER AND TERRAIN CONDITIONS.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X17972. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.