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NTSB investigations, AK

24 cases where the first occurrence was “Nose gear collapsed”.

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Cases per year

19822026

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Query with 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" = 192) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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\" = 192)
  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" = 192)
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 ANC99LA146Accident · No injuriesLimited investigationFinal reportCessna 182 · Anchorage, AKThe pilot/mechanic's improper damage repair, and intentional operation (ferry) of the airplane with known deficiencies. Factors in the accident were the installation of the improper nose gear assembly, and the inadequate surveillance and issuance of a special…Sep 11, 1999 · N1881X · Substantial damage NTSB ANC97LA150Accident · No injuriesLimited investigationFinal reportCessna 402C · Kivalina, AKAn overstress fracture of the nose landing gear attachment. A factor associated with the accident was the rough landing area.Sep 15, 1997 · N2649Z · Substantial damage NTSB ANC96LA152Accident · No injuriesLimited investigationFinal reportCessna 206F · Talkeetna, AKThe disconnection of the nosegear scissors assembly due to the loss of a retainer bolt.Sep 8, 1996 · N9515G · Substantial damage NTSB ANC96LA115Accident · No injuriesLimited investigationFinal reportde Havilland DHC-4 · New Stuyahok, AKThe collapse of the nosegear precipitated by the failure of the hydraulic nosegear drag strut locking actuator.Aug 2, 1996 · N800NC · Substantial damage NTSB ANC96IA077Incident · No injuriesIncident investigationFinal reportCessna 206 · Kodiak, AKThe pilot's selection of unsuitable terrain for landing. Factors in the accident were: soft terrain, the use of an oversize nose wheel tire, and the FAA's inadequate field approval process for tundra tires.Jun 1, 1996 · N9608G · Minor damage NTSB ANC95LA077Accident · No injuriesLimited investigationFinal reportCessna 402B · Tuntutuliak, AKThe airport maintenance personnel's inadequate maintenance of the runway by not replacing the yellow cones that marked the soft area. The soft area on the runway was a related factor.Jun 12, 1995 · N710WS · Substantial damage NTSB ANC93LA162Accident · No injuriesLimited investigationFinal reportCessna 172 · Knik Glacier, AKThe pilot's improper inflight planning/decision, and his failure to attain the proper touchdown point. Factors were the rain and the rough/uneven terrain.Aug 22, 1993 · N3817S · Substantial damage NTSB ANC93LA083Accident · No injuriesLimited investigationFinal reportBeech 56TC · Chistochina, AKThe pilot's improper decision to land on a rough airstrip.Jun 7, 1993 · N9194Q · Substantial damage NTSB ANC93IA084Incident · No injuriesIncident investigationFinal reportBoeing 737-200 · Anchorage, AKThe failure of the nose landing gear inner cylinder from an overload/overstress condition.Jun 7, 1993 · N673MA · Minor damage NTSB ANC93IA076Incident · No injuriesIncident investigationFinal reportCessna 310 · Kodiak, AKThe failure of the nose gear idler bell crank due to overstress by an undetermined source.May 31, 1993 · N5847M · Minor damage NTSB ANC93LA068Accident · No injuriesLimited investigationFinal reportCessna 402B · Kivalina, AKThe pilot's failure to check the condition of the runway before takeoff. The soft runway condition was a factor in the accident.May 25, 1993 · N401NA · Substantial damage NTSB ANC93LA038Accident · No injuriesLimited investigationFinal reportCessna U206A · Willow, AKThe abrupt aircraft handling by the pilot in command. Factors were the collapse of the nose gear and the soft, snow covered terrain.Feb 28, 1993 · N8076Z · Substantial damage NTSB ANC91IA020Incident · No injuriesIncident investigationFinal reportPiper PA-31-350 · Nome, AKWas the sheared fitting on the nose gear actuator shuttle valve which caused the nose gear to not extend for landing.Jan 15, 1991 · N4118G · Minor damage NTSB ANC89LA146Accident · No injuriesLimited investigationFinal reportCessna 172 · Eureka Lodge, AKImproper planning/decision by the pilot. A contributing factor was the hump (uneven surface) on the runway.Aug 19, 1989 · N78254 · Substantial damage NTSB ANC89LA072Accident · No injuriesLimited investigationFinal reportCessna 182H · White Mountain, AKThe pilot's selection of the wrong runway, which was closed. A factor related to the accident was: the snow crusted runway.May 18, 1989 · N1997X · Substantial damage NTSB ANC89IA068Incident · No injuriesIncident investigationFinal reportPiper PA-34-200T · Cordova, AKFailure of the upper trunion bolt which normally holds the upper portion of the over center down link.May 4, 1989 · N47895 · Minor damage NTSB ANC88FA022Accident · Minor injuriesField investigationFinal reportCessna 208 · Bethel, AKThe plt had planned to back taxi for takeoff on rwy 36. The tower controller asked if a rwy 18 departure would be acceptable to accommodate an arriving acft & the plt accepted a clnc. He started his takeoff with 3900' remaining on the 6399' rwy. After initial…Dec 19, 1987 · N9438F · Substantial damage NTSB SEA87LA022Accident · No injuriesLimited investigationFinal reportCessna 182G · Juneau, AKAccording to the plt, he 'greased' the acft on the rwy, but the cast alluminum yoke on the nose gear failed & the nosewheel left the airplane. The strut then failed & the acft was further damaged.Nov 9, 1986 · N2038R · Substantial damage NTSB ANC86IA137Incident · No injuriesIncident investigationFinal reportCessna 207A · Togiak, AKAfter landing the airplane was taxiing to park and the pilot noticed the steering becoming stiff. He stopped the airplane and examined the nose gear and found it to have pivoted forward with the wheel coming to rest against the nose cowling. The mechanic…Aug 24, 1986 · N1472M · Minor damage NTSB ANC85LA067Accident · No injuriesLimited investigationFinal reportCessna 150D · Wasilla, AKThe primary cause of this accident was the airplane striking the soft spot on the runway. Underlying factors were the pilot in command's inability to distinguish the soft runway surface from surrounding runway surfaces, and the unusually warm temperatures for…Apr 21, 1985 · N5947T · Substantial damage NTSB ANC84LA115Accident · No injuriesLimited investigationFinal reportCessna U-206 · Naknek, AKThe acft nosed over during a landing on a sandy beach. Witnesses stated, according to the plt, that the nose wheel was cocked 45 degrees to the right while the acft was on the final approach. Upon touchdown the acft veered to the right, the nose gear…Jul 14, 1984 · N3910G · Substantial damage NTSB SEA84LA024Accident · No injuriesLimited investigationFinal reportCessna A150K Aerobat · Nr. Wrangell, AKThe acft nosed over during landing on a snow covered sand bar. The weather was VMC. The plt said he underestimated the depth of the snow and upon landing the nose gear collapsed and the acft nosed over.Nov 25, 1983 · N8403M · Substantial damage NTSB ANC83IA001Incident · No injuriesIncident investigationFinal reportPiper PA-32-300 · Near Port Heide, AKAccording to the pilot, he was back taxiing along a beach after landing and while attempting to make a turn the nose gear collapsed. On examination, the pilot found that a bolt in the nose gear steering mechanism had failed due to excessive wear. This allowed…Oct 3, 1982 · N4025W · Minor damage NTSB ANC82DA044Accident · No injuriesFinal reportCessna 150 · Kodiak, AKThe pilot received a weather briefing before takeoff. At that time, the weather at the destination was improving, but was still marginal VFR. The pilot took off and proceeded on a VFR flight plan. While en route, he determined that either his compass or…May 29, 1982 · N1263Q · Substantial damage