# NTSB investigations, CO: Main gear collapsed NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB DEN01LA118](https://openairdocs.org/ntsb/DEN01LA118.md): Beech BE76 · Hudson, CO · Accident · No injuries · Limited investigation · Final report · Jun 30, 2001 · N877SP · Substantial damage > main landing gear collapse on touchdown for reasons undetermined. - [NTSB DEN99LA090](https://openairdocs.org/ntsb/DEN99LA090.md): Beech D95A · Englewood, CO · Accident · No injuries · Limited investigation · Final report · May 20, 1999 · N64TA · Substantial damage > The collapse of the right main landing gear during landing due to a fatigue crack, in the strut, which had an undetermined origin. - [NTSB FTW97LA368](https://openairdocs.org/ntsb/FTW97LA368.md): Bellanca 7KCAB · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Sep 19, 1997 · N88314 · Substantial damage > failure of the right main landing gear due to multiple fatigue cracks. - [NTSB FTW97LA239](https://openairdocs.org/ntsb/FTW97LA239.md): Cessna 210 · Peyton, CO · Accident · No injuries · Limited investigation · Final report · Jun 27, 1997 · N9417T · Substantial damage > Failure of both pilots to assure the landing gear was down and locked. - [NTSB FTW94LA322](https://openairdocs.org/ntsb/FTW94LA322.md): Bellanca 7KCAB · Frederick, CO · Accident · No injuries · Limited investigation · Final report · Sep 28, 1994 · N53844 · Substantial damage > A fatigue failure of the left main landing gear axle. - [NTSB DEN93FA049](https://openairdocs.org/ntsb/DEN93FA049.md): Mcdonnell Douglas DC-9-82 · Denver, CO · Accident · Minor injuries · Field investigation · Final report · Apr 27, 1993 · N72822 · Substantial damage > A vibration in the right main landing gear, for undetermined reasons, which resulted in collapse of the right main gear. A factor was failure of the pilot in command to ensure deployment of the ground spoilers. - [NTSB DEN89FA123](https://openairdocs.org/ntsb/DEN89FA123.md): Mcdonnell Douglas MD-80 · Denver, CO · Accident · Minor injuries · Field investigation · Final report · May 29, 1989 · N806NY · Substantial damage > A right main landing gear vibration of unknown origin, which resulted in a failure of the right main landing gear torque link and side brace. - [NTSB DEN89IA124](https://openairdocs.org/ntsb/DEN89IA124.md): Boeing 727-247 · Denver, CO · Incident · No injuries · Incident investigation · Final report · May 24, 1989 · N296WA · Minor damage > Failure of the left main landing gear forward trunnion bearing support fitting due to a crack initiating at the forward edge of the bore and propagating by intergranular stress corrosion into the bore surface that resulted in an eventual ductile fracture. - [NTSB DEN86FA256](https://openairdocs.org/ntsb/DEN86FA256.md): Cessna 185C · Broomfield, CO · Accident · Serious injuries · Field investigation · Final report · Sep 21, 1986 · N2674Z · Substantial damage > Plt stated that he made an 'extra smooth landing' on rwy 11L and during the landing roll the right main landing gear collapsed. Examination of landing gear mounting bolt revealed evidence of an overload failure. The engineer that examined the bolt, nut, and… - [NTSB DEN85LA012](https://openairdocs.org/ntsb/DEN85LA012.md): Piper PA-34-220T · Creede, CO · Accident · No injuries · Limited investigation · Final report · Oct 16, 1984 · N8011J · Substantial damage > According to the plt, just prior to landing, at about 5 ft AGL, the gear warning horn sounded and the right main gear down and locked light flickered. The landing was continued and the right gear collapsed during the rollout. A mechanic who examined the acft… - [NTSB DEN84LA129](https://openairdocs.org/ntsb/DEN84LA129.md): Cessna 140 · Aurora, CO · Accident · No injuries · Limited investigation · Final report · Apr 15, 1984 · N89984 · Substantial damage > According to the plt, the acft suddenly ground looped during the landing & departed the rwy. An investigation revealed that the left gear leg had collapsed at some time during the accident sequence. The left gear leg pin, which was found sheared, had a dark… - [NTSB DEN82DA178](https://openairdocs.org/ntsb/DEN82DA178.md): Beech 35 · Grand Junction, CO · Accident · No injuries · Final report · Aug 30, 1982 · N3899N · Substantial damage > The pilot stated that before landing, he lowered the gear and checked the indicators which showed that the gear was extended. During the landing, the aircraft settled on the right wing. Despite the pilot's use of left aileron, left rudder and left brake, the… ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."eventStateOrRegion" = 'CO' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 191) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=191&state=CO --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.