NTSB investigations, AK
44 cases where the first occurrence was “Main gear collapsed”.
Cases per year
| 1982 | 5 |
|---|---|
| 1983 | 1 |
| 1984 | 2 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 7 |
| 1990 | 2 |
| 1991 | 1 |
| 1992 | 4 |
| 1993 | 7 |
| 1994 | 1 |
| 1996 | 1 |
| 1997 | 4 |
| 1998 | 1 |
| 2002 | 1 |
| 2003 | 2 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ANC03LA126Accident · No injuriesLimited investigationFinal reportCessna 170A · Skwentna, AKAn 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 ANC03LA053Accident · No injuriesLimited investigationFinal reportCessna 320 · McCarthy, AKThe collapse of the left main landing gear during the landing roll for undetermined reasons.NTSB ANC02LA033Accident · No injuriesLimited investigationFinal reportBellanca 7GCBC · Yakutat, AKThe collapse of the left main landing gear during the landing roll due to a fractured main gear leg strut.NTSB ANC98LA141Accident · No injuriesLimited investigationFinal reportChristen Industries A-1 Husky · Selawik, AKThe 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 ANC97LA120Accident · No injuriesLimited investigationFinal reportCessna 185 · Chickaloon, AKinadequate 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 ANC97LA111Accident · No injuriesLimited investigationFinal reportCessna 180 · Umiat, AKThe collapse of the right main landing gear while taxiing to parking.NTSB ANC97LA104Accident · Minor injuriesLimited investigationFinal reportPiper PA-18 · Gakona, AKThe pilot's selection of unsuitable terrain for landing.NTSB ANC97LA039Accident · No injuriesLimited investigationFinal reportPiper PA-18 · Chugiak, AKthe pilot's selection of an unsuitable landing site.NTSB ANC96LA030Accident · No injuriesLimited investigationFinal reportCessna 185F · Skwentna, AKthe pilot's selection of an unsuitable area for landing. A factor associated with the accident was the rough and uneven terrain.NTSB ANC94LA058Accident · No injuriesLimited investigationFinal reportPiper J5A · Lake George, AKThe pilot's failure to maintain clearance from trees during takeoff. A factor in the accident was the bent gear leg.NTSB ANC94LA012Accident · No injuriesLimited investigationFinal reportPiper PA-18 · Haines, AKFatigue failure in a weld on the right main landing gear oleo strut tubing.NTSB ANC93LA154Accident · No injuriesLimited investigationFinal reportHelio H-295 · Mt. Deborah, AKFailure 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 ANC93LA097Accident · No injuriesLimited investigationFinal reportCessna 180 · Anchorage, AKSeparation of the right main landing gear wheel.NTSB ANC93LA090Accident · No injuriesLimited investigationFinal reportCessna 402 · Kivalina, AKThe failure of the pivot link for the downlock mechanism and the improper rigging of the landing gear locking mechanism by company maintenance personnel.NTSB ANC93IA085Incident · No injuriesIncident investigationFinal reportPiper PA-31-350 · King Salmon, AKThe failure of the main gear upper strut assembly due to stress corrosion.NTSB ANC93LA086Accident · No injuriesLimited investigationFinal reportCessna 185 · Barrow, AKThe fatigue fracture of the main landing gear spring.NTSB ANC93LA032Accident · No injuriesLimited investigationFinal reportCessna 180 · Elmendorf Afb, AKThe pilot's excessive taxi speed. A factor which contributed to the accident was the snow covered surface.NTSB ANC92LA124Accident · No injuriesLimited investigationFinal reportBellanca 7ECA · Talarik Creek, AKThe pilot selected unsuitable terrain on which operate.NTSB ANC92LA078Accident · No injuriesLimited investigationFinal reportCessna 185 · Kahiltna Glacie, AKThe fracture of the landing gear wheel ski pivot shaft due to improper manufacture.NTSB ANC92LA067Accident · No injuriesLimited investigationFinal reportCessna C-A185F · Barrow, AKThe 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 ANC92LA050Accident · No injuriesLimited investigationFinal reportPiper PA-22-150 · Palmer, AKInadequate in-flight planning/decision. Factors to the accident were: icy and snow covered runway, and delayed remedial action.NTSB ANC91LA056Accident · No injuriesLimited investigationFinal reportCessna C-170B · Manley Hot Sprg, AKThe pilot's selecting unsuitable terrain for landing. Contributing to the accident was the rough landing area.NTSB ANC90LA180Accident · No injuriesLimited investigationFinal reportCessna 185 · Upper Colleen, AKThe pilot-in-command's failure to select suitable terrain for landing. Contributing to the accident was the rough and uneven terrain.NTSB ANC90LA073Accident · No injuriesLimited investigationFinal reportPiper PA-18 · Talkeetna, AKCollapse 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 ANC90LA023Accident · No injuriesLimited investigationFinal reportChampion 7ECA · Tanana, AKFailure of the right main gear axle bolt.NTSB ANC90LA003Accident · No injuriesLimited investigationFinal reportPiper PA-22 · Dillingham, AKFailure of the right main gear.NTSB ANC89LA142Accident · No injuriesLimited investigationFinal reportPiper PA-18 · Red Lake, AKThe pilot's selection of unsuitable terrain. The rough/uneven terrain was a contributing factor.NTSB ANC89LA093Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Eek, AKFailure of the center torque link bolt on the right main gear.NTSB ANC89LA058Accident · No injuriesLimited investigationFinal reportCessna 185 · Trinity Lake, AKThe pilot's selection of unsuitable terrain on which to land.NTSB ANC89LA044Accident · No injuriesLimited investigationFinal reportPiper J-5 · Skwentna, AKThe pilot's selection of unsuitable terrain. A contributing factor is the pilot's lack of experience in off airport landings.NTSB ANC89LA030Accident · No injuriesLimited investigationFinal reportChampion 7GCBC · Cantwell, AKThe pilot's selection of unsuitable terrain for landing. Contributing factors were the pilot's lack of total experience, and the snow covered runway.NTSB ANC88LA119Accident · No injuriesLimited investigationFinal reportCessna 185F · Joseph Village, AKThe 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 ANC88LA054Accident · Minor injuriesLimited investigationFinal reportCessna 185F · Hunter Creek, AKAfter 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 ANC88IA013Incident · No injuriesIncident investigationFinal reportCessna 402B · Cordova, AKThe 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 ANC87IA011Incident · No injuriesIncident investigationFinal reportCessna 402C · Kivalina, AKThe 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 ANC86IA010Incident · No injuriesIncident investigationFinal reportPiper Navajo PA-31-350 · Kenai, AKThe 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 ANC85LA020Accident · No injuriesLimited investigationFinal reportEmbraer EMB-110 · Fairbanks, AKThe 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 ANC84LA165Accident · No injuriesLimited investigationFinal reportMaule M-4-210C · Tok, AKThe 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 ANC83IA118Incident · No injuriesIncident investigationFinal reportFairchild C-82A · Anchorage, AKThe 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 ANC83LA025Accident · No injuriesLimited investigationFinal reportPiper PA-18-150 · Alexander Creek, AKThe pilot landed on rough, snow covered terrain and the landing gear collapsed. This aircraft had an out of date annual inspection.NTSB ANC83LA020Accident · Minor injuriesLimited investigationFinal reportPiper PA-18-150 · Brevig Mission, AKWhile 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 ANC83LA014Accident · No injuriesLimited investigationFinal reportCessna 150 · Anchorage, AKPrior 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 ANC82DA047Accident · No injuriesFinal reportCessna 402B · Grayling, AKThe left main landing gear collapsed during landing rollout. Part of the landing gear system failed in shear overstress.NTSB ANC82DA021Accident · No injuriesFinal reportPiper PA-20 · Bethel, AKThe 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.