DEN90LA130
1990-06-09 · CONDON, Montana, United States · Minor · 1 aircraft · Status: Completed
Airport S04
Aircraft involved
Probable cause & findings
THE PILOT'S FAILURE TO ABORT THE TAKEOFF.
Factual narrative
THE PLT, WITH 3 PAX ABOARD, ATTEMPTED TO TAKE OFF FROM RWY 13 (3,035 FT X 200 FT, TURF) AT THE CONDON, MT, USFS AIRSTRIP (ELEVATION 3,686 FT MSL). WINDS WERE APRX 1-5 MPH. THE PLT SELECTED 20 DEG OF FLAPS AND USED A SHORT/SOFT FIELD TAKEOFF PROCEDURE. THE ACFT LIFTED OFF BRIEFLY BUT SETTLED BACK TO THE GROUND. THE PLT DID NOT FEEL HE COULD ABORT TAKEOFF BECAUSE THERE WERE TRUCKS, TRAILERS, MULES, AND PEOPLE AT THE END OF THE RWY. HE THOUGHT HE ENCOUNTERED A SUDDEN DOWNDRAFT. THE ACFT YAWED TO THE LEFT AND CLEARED THE PARKED VEHICLES BUT WAS UNABLE TO CLEAR THE TREES. THE PLT CUT THE PWR AND TRIED TO SLOW THE ACFT BEFORE IMPACT. PERFORMANCE CALCULATIONS INDICATE ACFT NEEDED 1,240 FT OF RWY FOR ITS GROUND RUN AND 2,084 FT TO CLEAR A 50-FT OBSTACLE. PLT SAID AIRSTRIP IS KNOWN FOR WIND SHEAR ABOVE TREE LINE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1990_DEN90LA130.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 (wind shear). All research papers
- NASA NTRS 2019 · Conference Paper Optimal recovery from microburst wind shear
The flight path of a twin-jet transport aircraft is optimized in a microburst encounter during approach to landing. The objective is to execute an escape maneuver that maintains safe ground clearance …
- NASA NTRS 2019 · Contractor Report (CR) An Examination of Aviation Accidents Associated with Turbulence, Wind Shear and Thunderstorm
The focal point of the study reported here was the definition and examination of turbulence, wind shear and thunderstorm in relation to aviation accidents.
- NASA NTRS 2019 · Conference Paper Analysis of extreme wind shear
New methods utilizing extreme value statistical theory are applied in the analysis of the largest wind component shear in a wind profile as a function of shear layer thickness and season.
- NASA NTRS 2019 · Technical Memorandum (TM) Probabilities of zero wind shear phenomena based on Rawinsonde data records
Probabilities of zero wind shear occurence and depth based on rawinsonde data records
- NASA NTRS 2019 · Contractor Report (CR) A Wind Shear Mechanism for Producing Sporadic E by Concentrating Minor Meteoric Ions
Wind shear mechanism for producing sporadic E layer by concentrating minor meteoric ions
- NASA NTRS 2019 · Technical Memorandum (TM) Some aspects of wind shear in the upper atmosphere
Hydrodynamic turbulence and wind shear in upper atmosphere