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DEN91FA043

1991-02-13 · ASPEN, Colorado, United States · Fatal · 1 aircraft · Status: Completed

Airport ASE

N535PC has since been reassigned. It is now registered to a different aircraft (PILATUS AIRCRAFT LTD PC-12/47E, built 2008), which was not involved in this event.

Aircraft involved

Probable cause & findings

The flight crew's failure to maintain airspeed and control of the airplane while maneuvering to land. Contributing factors were the flight crew's execution of an unstabilized approach and the surrounding snow-covered mountainous terrain.

Factual narrative

The flight crew reported to the tower controller that they were over the airport and requested a right downwind circling approach to runway 15. The tower controller and other witnesses observed the airplane in a steep right bank on base leg. The airplane overshot the extended runway centerline. The tower controller observed the airplane entering a steeper right bank to correct back to the runway centerline. The controller stated that he observed the airplane "flutter" and then crash right-wing first, about one mile north of the runway threshold. Other witnesses reported a variety of indications consistent with a loss of control. The last recorded transmission was "Oh no you're (stall…)." The ( ) indicates that the word was questionable text. Both engines were producing about 1,700 pounds of thrust (2,561 pounds available). A snow squall had just passed over the airport and was obscuring mountains to the east. The terrain was snow covered. The accident occurred about eight minutes before official sunset. The approach procedure is not authorized at night or for category D airplanes. Minimums for the approach were three miles visibility with an MDA of 10,840 feet. Airport elevation is 7,815 feet. Both pilots were rated in the airplane. It could not be determined which pilot was at the controls at the time of the accident. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_DEN91FA043.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

Matched on aircraft type or causal vocabulary (stall, loss of control, unstabilized approach). All research papers