# NTSB investigations, AK: 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 ANC03LA126](https://openairdocs.org/ntsb/ANC03LA126.md): Cessna 170A · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Sep 25, 2003 · N9006A · Substantial damage > An overload failure of the axle retaining nut/bolt assembly, which resulted in the separation of the axle/wheel assembly, and subsequent collapse of the right main landing gear strut during the landing roll. - [NTSB ANC03LA053](https://openairdocs.org/ntsb/ANC03LA053.md): Cessna 320 · McCarthy, AK · Accident · No injuries · Limited investigation · Final report · May 30, 2003 · N5712X · Substantial damage > The collapse of the left main landing gear during the landing roll for undetermined reasons. - [NTSB ANC02LA033](https://openairdocs.org/ntsb/ANC02LA033.md): Bellanca 7GCBC · Yakutat, AK · Accident · No injuries · Limited investigation · Final report · May 13, 2002 · N3JK · Substantial damage > The collapse of the left main landing gear during the landing roll due to a fractured main gear leg strut. - [NTSB ANC98LA141](https://openairdocs.org/ntsb/ANC98LA141.md): Christen Industries A-1 Husky · Selawik, AK · Accident · No injuries · Limited investigation · Final report · Sep 7, 1998 · N28973 · Substantial damage > The pilot's inadequate compensation for the crosswind conditions. Factors in this accident were a crosswind, the pilot's lack of certification, and his inadequate fuel consumption calculations. - [NTSB ANC97LA120](https://openairdocs.org/ntsb/ANC97LA120.md): Cessna 185 · Chickaloon, AK · Accident · No injuries · Limited investigation · Final report · Aug 9, 1997 · N5246E · Substantial damage > inadequate maintenance inspection and failure of the left main landing gear attachment due to fatigue. A factor was continuous use of the airplane for rough area, off-airport landings. - [NTSB ANC97LA111](https://openairdocs.org/ntsb/ANC97LA111.md): Cessna 180 · Umiat, AK · Accident · No injuries · Limited investigation · Final report · Jul 24, 1997 · N2707X · Substantial damage > The collapse of the right main landing gear while taxiing to parking. - [NTSB ANC97LA104](https://openairdocs.org/ntsb/ANC97LA104.md): Piper PA-18 · Gakona, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1997 · N83675 · Substantial damage > The pilot's selection of unsuitable terrain for landing. - [NTSB ANC97LA039](https://openairdocs.org/ntsb/ANC97LA039.md): Piper PA-18 · Chugiak, AK · Accident · No injuries · Limited investigation · Final report · Mar 27, 1997 · N4055Z · Substantial damage > the pilot's selection of an unsuitable landing site. - [NTSB ANC96LA030](https://openairdocs.org/ntsb/ANC96LA030.md): Cessna 185F · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Mar 4, 1996 · N5246E · Substantial damage > the pilot's selection of an unsuitable area for landing. A factor associated with the accident was the rough and uneven terrain. - [NTSB ANC94LA058](https://openairdocs.org/ntsb/ANC94LA058.md): Piper J5A · Lake George, AK · Accident · No injuries · Limited investigation · Final report · May 24, 1994 · N35395 · Substantial damage > The pilot's failure to maintain clearance from trees during takeoff. A factor in the accident was the bent gear leg. - [NTSB ANC94LA012](https://openairdocs.org/ntsb/ANC94LA012.md): Piper PA-18 · Haines, AK · Accident · No injuries · Limited investigation · Final report · Oct 5, 1993 · N5285J · Substantial damage > Fatigue failure in a weld on the right main landing gear oleo strut tubing. - [NTSB ANC93LA154](https://openairdocs.org/ntsb/ANC93LA154.md): Helio H-295 · Mt. Deborah, AK · Accident · No injuries · Limited investigation · Final report · Aug 15, 1993 · N42DC · Substantial damage > Failure of the right main landing gear leg due to the improper major repair performed on the gear leg by some unknown maintenance person(s). - [NTSB ANC93LA097](https://openairdocs.org/ntsb/ANC93LA097.md): Cessna 180 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Jun 20, 1993 · N9968X · Substantial damage > Separation of the right main landing gear wheel. - [NTSB ANC93LA090](https://openairdocs.org/ntsb/ANC93LA090.md): Cessna 402 · Kivalina, AK · Accident · No injuries · Limited investigation · Final report · Jun 12, 1993 · N222JA · Substantial damage > The failure of the pivot link for the downlock mechanism and the improper rigging of the landing gear locking mechanism by company maintenance personnel. - [NTSB ANC93IA085](https://openairdocs.org/ntsb/ANC93IA085.md): Piper PA-31-350 · King Salmon, AK · Incident · No injuries · Incident investigation · Final report · May 26, 1993 · N3588Z · Minor damage > The failure of the main gear upper strut assembly due to stress corrosion. - [NTSB ANC93LA086](https://openairdocs.org/ntsb/ANC93LA086.md): Cessna 185 · Barrow, AK · Accident · No injuries · Limited investigation · Final report · May 23, 1993 · N75LE · Substantial damage > The fatigue fracture of the main landing gear spring. - [NTSB ANC93LA032](https://openairdocs.org/ntsb/ANC93LA032.md): Cessna 180 · Elmendorf Afb, AK · Accident · No injuries · Limited investigation · Final report · Feb 6, 1993 · N3680C · Substantial damage > The pilot's excessive taxi speed. A factor which contributed to the accident was the snow covered surface. - [NTSB ANC92LA124](https://openairdocs.org/ntsb/ANC92LA124.md): Bellanca 7ECA · Talarik Creek, AK · Accident · No injuries · Limited investigation · Final report · Aug 6, 1992 · N31297 · Substantial damage > The pilot selected unsuitable terrain on which operate. - [NTSB ANC92LA078](https://openairdocs.org/ntsb/ANC92LA078.md): Cessna 185 · Kahiltna Glacie, AK · Accident · No injuries · Limited investigation · Final report · May 24, 1992 · N124KT · Substantial damage > The fracture of the landing gear wheel ski pivot shaft due to improper manufacture. - [NTSB ANC92LA067](https://openairdocs.org/ntsb/ANC92LA067.md): Cessna C-A185F · Barrow, AK · Accident · No injuries · Limited investigation · Final report · May 3, 1992 · N20752 · Substantial damage > The improper use of the flt controls by the second pilot during landing roll. Factors relating to the mishap were the rough/uneven snow covered terrain. - [NTSB ANC92LA050](https://openairdocs.org/ntsb/ANC92LA050.md): Piper PA-22-150 · Palmer, AK · Accident · No injuries · Limited investigation · Final report · Mar 22, 1992 · N5947D · Substantial damage > Inadequate in-flight planning/decision. Factors to the accident were: icy and snow covered runway, and delayed remedial action. - [NTSB ANC91LA056](https://openairdocs.org/ntsb/ANC91LA056.md): Cessna C-170B · Manley Hot Sprg, AK · Accident · No injuries · Limited investigation · Final report · May 4, 1991 · N2744D · Substantial damage > The pilot's selecting unsuitable terrain for landing. Contributing to the accident was the rough landing area. - [NTSB ANC90LA180](https://openairdocs.org/ntsb/ANC90LA180.md): Cessna 185 · Upper Colleen, AK · Accident · No injuries · Limited investigation · Final report · Sep 18, 1990 · N70087 · Substantial damage > The pilot-in-command's failure to select suitable terrain for landing. Contributing to the accident was the rough and uneven terrain. - [NTSB ANC90LA073](https://openairdocs.org/ntsb/ANC90LA073.md): Piper PA-18 · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · May 21, 1990 · N2515A · Substantial damage > Collapse of the left main landing gear due to an overload failure induced by previous damage which occurred during an improper level-off by the pilot. - [NTSB ANC90LA023](https://openairdocs.org/ntsb/ANC90LA023.md): Champion 7ECA · Tanana, AK · Accident · No injuries · Limited investigation · Final report · Dec 29, 1989 · N7615S · Substantial damage > Failure of the right main gear axle bolt. - [NTSB ANC90LA003](https://openairdocs.org/ntsb/ANC90LA003.md): Piper PA-22 · Dillingham, AK · Accident · No injuries · Limited investigation · Final report · Oct 5, 1989 · N5715D · Substantial damage > Failure of the right main gear. - [NTSB ANC89LA142](https://openairdocs.org/ntsb/ANC89LA142.md): Piper PA-18 · Red Lake, AK · Accident · No injuries · Limited investigation · Final report · Aug 13, 1989 · N83622 · Substantial damage > The pilot's selection of unsuitable terrain. The rough/uneven terrain was a contributing factor. - [NTSB ANC89LA093](https://openairdocs.org/ntsb/ANC89LA093.md): Piper PA-32-300 · Eek, AK · Accident · No injuries · Limited investigation · Final report · Jun 16, 1989 · N32062 · Substantial damage > Failure of the center torque link bolt on the right main gear. - [NTSB ANC89LA058](https://openairdocs.org/ntsb/ANC89LA058.md): Cessna 185 · Trinity Lake, AK · Accident · No injuries · Limited investigation · Final report · Apr 12, 1989 · N9850X · Substantial damage > The pilot's selection of unsuitable terrain on which to land. - [NTSB ANC89LA044](https://openairdocs.org/ntsb/ANC89LA044.md): Piper J-5 · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Feb 15, 1989 · N35038 · Substantial damage > The pilot's selection of unsuitable terrain. A contributing factor is the pilot's lack of experience in off airport landings. - [NTSB ANC89LA030](https://openairdocs.org/ntsb/ANC89LA030.md): Champion 7GCBC · Cantwell, AK · Accident · No injuries · Limited investigation · Final report · Jan 2, 1989 · N5134T · Substantial damage > The pilot's selection of unsuitable terrain for landing. Contributing factors were the pilot's lack of total experience, and the snow covered runway. - [NTSB ANC88LA119](https://openairdocs.org/ntsb/ANC88LA119.md): Cessna 185F · Joseph Village, AK · Accident · No injuries · Limited investigation · Final report · Aug 28, 1988 · N4838C · Substantial damage > The pilot-in-command stated the airplane struck a depression in the runway upon landing at Joseph, Alaska. Examination of the left main gear showed that a bracket, part number 0713495-61 failed due to overload, and allowed the landing gear to separate from… - [NTSB ANC88LA054](https://openairdocs.org/ntsb/ANC88LA054.md): Cessna 185F · Hunter Creek, AK · Accident · Minor injuries · Limited investigation · Final report · May 6, 1988 · N22901 · Substantial damage > After landing at a mining camp airstrip, the right landing gear failed causing the aircraft to ground loop. Examination of the broken gear part revealed the original fracture to be a fatigue fracture. The initial crack in the gear leg ran parallel to the gear… - [NTSB ANC88IA013](https://openairdocs.org/ntsb/ANC88IA013.md): Cessna 402B · Cordova, AK · Incident · No injuries · Incident investigation · Final report · Oct 26, 1987 · N5718M · Minor damage > The company maintenance personnel were aware of a shimmy problem but they thought is was only worn bushings. The maintenance people stated they inspected the part but found no problem. The pilot-in-command also stated he found no problem upon visually… - [NTSB ANC87IA011](https://openairdocs.org/ntsb/ANC87IA011.md): Cessna 402C · Kivalina, AK · Incident · No injuries · Incident investigation · Final report · Oct 8, 1986 · N1233T · Minor damage > The roll pin and safety wire which retain the main landing gear forward trunnion pin were broken and the forward trunnion pin on the right main landing gear was found 'backed out', thereby releasing the right main landing gear trunnion. - [NTSB ANC86IA010](https://openairdocs.org/ntsb/ANC86IA010.md): Piper Navajo PA-31-350 · Kenai, AK · Incident · No injuries · Incident investigation · Final report · Dec 5, 1985 · N492SC · Minor damage > The pilot in command could not raise the landing gear properly after departure. He diverted to Kenai, Alaska, whereupon extending the gear he obtained three safe gear indications. The pilot landed the airplane and upon roll out the left main gear collapsed.… - [NTSB ANC85LA020](https://openairdocs.org/ntsb/ANC85LA020.md): Embraer EMB-110 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Nov 20, 1984 · N39174 · Substantial damage > The acft sustained substantial damage when the landing gear collapsed during landing. Tests conducted by the acft operator and acft manufacturer failed to provide any reason for the gear collapse. Both plts stated the gear was down and locked upon touchdown. - [NTSB ANC84LA165](https://openairdocs.org/ntsb/ANC84LA165.md): Maule M-4-210C · Tok, AK · Accident · No injuries · Limited investigation · Final report · Sep 4, 1984 · N9820M · Substantial damage > The acft landed on an unimproved airstrip and the landing gear collapsed during the landing roll. The plt indicated he should have avoided the rough airstrip. - [NTSB ANC83IA118](https://openairdocs.org/ntsb/ANC83IA118.md): Fairchild C-82A · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Jul 7, 1983 · N9701F · Minor damage > The main landing gear collapsed after landing. The nose gearwas down & locked with a green light in the cockpit. There was no down & locked light illuminated for the main gear. Examination revealed signatures consistent with extreme overload as in attempting… - [NTSB ANC83LA025](https://openairdocs.org/ntsb/ANC83LA025.md): Piper PA-18-150 · Alexander Creek, AK · Accident · No injuries · Limited investigation · Final report · Dec 21, 1982 · N742GF · Substantial damage > The pilot landed on rough, snow covered terrain and the landing gear collapsed. This aircraft had an out of date annual inspection. - [NTSB ANC83LA020](https://openairdocs.org/ntsb/ANC83LA020.md): Piper PA-18-150 · Brevig Mission, AK · Accident · Minor injuries · Limited investigation · Final report · Nov 30, 1982 · N3675P · Substantial damage > While the pilot was landing on a road, the left main gear, forward support tube failed. The pilot stated that he applied takeoff power to avoid ground looping and the plane became airborne. He stated that he "dumped" his flaps while indicating 60 mph and… - [NTSB ANC83LA014](https://openairdocs.org/ntsb/ANC83LA014.md): Cessna 150 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Nov 21, 1982 · N7964V · Substantial damage > Prior to landing, the pilot was advised that the lakes were closed by the airport management and that he would be landing at his own risk. He acknowledged the radio transmission, but elected to land his ski equipped plane on the frozen lake. The lake had been… - [NTSB ANC82DA047](https://openairdocs.org/ntsb/ANC82DA047.md): Cessna 402B · Grayling, AK · Accident · No injuries · Final report · Jun 9, 1982 · N5718M · Substantial damage > The left main landing gear collapsed during landing rollout. Part of the landing gear system failed in shear overstress. - [NTSB ANC82DA021](https://openairdocs.org/ntsb/ANC82DA021.md): Piper PA-20 · Bethel, AK · Accident · No injuries · Final report · Feb 26, 1982 · N3404A · Substantial damage > The pilot was taxiing to the tie-down area when the right ski/landing gear failed. The pilot attributed the failure to age and noted that ice landings are hard on ski equipped aircraft. ## 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" = 'AK' 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=AK --- 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.