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DEN93LA064

1993-05-30 · BUENA VISTA, Colorado, United States · Serious · 1 aircraft · Status: Completed

Airport 7V1

N173 has since been reassigned. It is now registered to a different aircraft (ENSTROM F-28A, built 1974), which was not involved in this event.

Aircraft involved

Probable cause & findings

FAILURE TO FOLLOW PROCEDURES AND DIRECTIVES WHEN OPERATING THE FLAPS.

Factual narrative

DURING THE TAKEOFF ROLL THE PILOT WENT FROM NEGATIVE TO POSITIVE FLAPS AFTER THE CONTROLS BECAME EFFECTIVE. THE FLAP TRANSITION WAS RAPID AND THE GLIDER BEGAN TO OSCILLATE IN PITCH. THE OSCILLATIONS BECAME DIVERGENT AND THE GLIDER ROLLED OFF ON A WING AND COLLIDED WITH THE GROUND SHORTLY AFTER THE SAFETY ROPE PARTED. THE PILOT STATED THAT HE WENT FROM NEGATIVE TO POSITIVE FLAPS TOO QUICKLY RESULTING IN LOSS OF CONTROL. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1993_DEN93LA064.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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Related research

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