# NTSB investigations, AK: Sys/Comp malf/fail (non-power)

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 ANC26LA022](https://openairdocs.org/ntsb/ANC26LA022.md): Cessna A185F · Skwentna, AK · Accident · No injuries · Class 4 · Limited · Final report · Mar 28, 2026 · N94237 · Substantial damage
  > The pilot’s loss of directional control during landing roll due to contact with wind hardened snow berm and subsequent failure of main landing gear.
- [NTSB ANC25LA076](https://openairdocs.org/ntsb/ANC25LA076.md): Cessna 180H · Gulkana, AK · Accident · No injuries · Class 4 · Limited · Final report · Jul 17, 2025 · N91393 · Substantial damage
  > The failure of the left rudder assembly which resulted in a runway excursion and ground loop.
- [NTSB ANC25LA059](https://openairdocs.org/ntsb/ANC25LA059.md): Cessna 170B · Denali Park, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 25, 2025 · N2655D · Substantial damage
  > The failure of the left main landing gear spring due to a fatigue fracture during landing on uneven terrain.
- [NTSB ANC25LA030](https://openairdocs.org/ntsb/ANC25LA030.md): Cessna A185F · Skwentna, AK · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2025 · N1718R · Substantial damage
  > Maintenance personnel’s reuse of worn hardware during the installation of the landing gear assembly and the hardware’s failure and subsequent separation of the gear leg from the landing gear box assembly during taxi.
- [NTSB ANC25LA009](https://openairdocs.org/ntsb/ANC25LA009.md): Cessna 180 · Egegik, AK · Accident · No injuries · Class 3 · Limited · Final report · Nov 29, 2024 · N9140R · Substantial damage
  > A failure of the right main landing gear leg for reasons that could not be determined.
- [NTSB ANC24LA082](https://openairdocs.org/ntsb/ANC24LA082.md): Piper PA-22-150 · Sagwon, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 25, 2024 · N6815B · Substantial damage
  > A failure of the landing gear fitting at the fuselage attachment point to due to a poor weld joint.
- [NTSB ANC24LA048](https://openairdocs.org/ntsb/ANC24LA048.md): Stinson 108-2 · Bethel, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 1, 2024 · N299C · Substantial damage
  > The uncertificated pilot’s decision to fly an unairworthy airplane and his failure to maintain directional control during landing, which resulted in a landing gear collapse. Contributing was the failure of the right main landing gear oleo strut.
- [NTSB ANC24LA013](https://openairdocs.org/ntsb/ANC24LA013.md): Robinson Helicopter R44 II · Glacier View, AK · Accident · No injuries · Class 3 · Limited · Final report · Feb 11, 2024 · N74868 · Substantial damage
  > A sudden stoppage of the tail rotor for unknown reasons, which resulted in the tortional overload failure of the tail rotor driveshaft.
- [NTSB ANC23LA052](https://openairdocs.org/ntsb/ANC23LA052.md): Dehavilland DHC-2 · McCarthy, AK · Accident · No injuries · Class 4 · Limited · Final report · Jul 12, 2023 · N814DW · Substantial damage
  > A failure of the right brake caliper bolts during landing, which resulted in a runway excursion and subsequent impact with terrain.
- [NTSB ANC22LA080](https://openairdocs.org/ntsb/ANC22LA080.md): Cessna 180A · Skwentna, AK · Accident · 1 fatal · Class 3 · Limited · Final report · Sep 25, 2022 · N9728B · Substantial damage
  > The failure of the landing gear float due to inadequate maintenance of the floats and corrosion.
- [NTSB ANC21LA022](https://openairdocs.org/ntsb/ANC21LA022.md): Cessna A185F · Skwentna, AK · Accident · No injuries · Class 3 · Limited · Final report · Mar 5, 2021 · N1848R · Substantial damage
  > Installation of improper hardware on the ski check cable. Contributing to the accident was the inadequate inspection of the ski yokes, which resulted in the subsequent failure of the right main landing gear ski yoke and collapse of the right main landing gear…
- [NTSB ANC20LA098](https://openairdocs.org/ntsb/ANC20LA098.md): Cessna 182 · King Salmon, AK · Accident · No injuries · Class 3 · Limited · Final report · Sep 21, 2020 · N182KT · Substantial damage
  > The fatigue fracture failure of the left main landing gear U-bolt during landing, which resulted in the collapse and separation of the left main landing gear spring.
- [NTSB ANC20LA013](https://openairdocs.org/ntsb/ANC20LA013.md): Piper PA31 · Fairbanks, AK · Accident · No injuries · Class 3 · Limited · Final report · Jan 12, 2020 · N4112K · Substantial damage
  > The improper installation of a hydraulic line at the right main landing gear (MLG) unlock actuator, which resulted in a total loss of system hydraulic pressure and failure of the landing gear to extend. Contributing to the accident was the failure of the…
- [NTSB ANC19LA049](https://openairdocs.org/ntsb/ANC19LA049.md): Cessna A185 · Talkeetna, AK · Accident · No injuries · Class 3 · Limited · Final report · Jul 17, 2019 · N121EE · Substantial damage
  > A fracture of the right outboard landing gear bracket for undetermined reasons.
- [NTSB ANC18LA048](https://openairdocs.org/ntsb/ANC18LA048.md): Cessna 180 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Jun 23, 2018 · N3125D · Substantial damage
  > The failure of the brake line tube due to an improper flare.
- [NTSB ANC18LA019](https://openairdocs.org/ntsb/ANC18LA019.md): Cessna 210 · Juneau, AK · Accident · No injuries · Class 3 · Limited · Final report · Jan 14, 2018 · N3607Y · Substantial damage
  > A loss of hydraulic fluid due to a fatigue failure of the right main landing gear hydraulic actuator, which resulted in the pilot's inability to fully extend the landing gear and a main landing gear collapse during the landing roll.
- [NTSB DCA18CA056](https://openairdocs.org/ntsb/DCA18CA056.md): Mcdonnell Douglas DC 9 33F · Bethel, AK · Accident · No injuries · Data collection · Final report · Dec 23, 2017 · N935CE · Substantial damage
  > failure of a cargo tie-down fastener, resulting in unsecured cargo striking the pressure bulkhead.
- [NTSB ANC17LA046](https://openairdocs.org/ntsb/ANC17LA046.md): Thrush S2R · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · Aug 17, 2017 · N32LF · Substantial damage
  > The pilot's improper landing in the tailwheel-equipped airplane, which allowed an excessive load on the tailwheel and resulted in the subsequent component fracture, loss of control, runway excursion, and impact with terrain.
- [NTSB ANC17LA005](https://openairdocs.org/ntsb/ANC17LA005.md): Cessna A185 · Ninilchik, AK · Accident · No injuries · Limited investigation · Final report · Nov 12, 2016 · N4918Q · Substantial damage
  > A loss of brake system fluid due to leaks in the o-rings, which resulted in asymmetrical braking and a subsequent loss of directional control during the landing roll.
- [NTSB ANC16LA068](https://openairdocs.org/ntsb/ANC16LA068.md): Jeffery D Tuttle BDK Carbon Concepts · Wasilla, AK · Accident · Serious injuries · Limited investigation · Final report · Sep 16, 2016 · N8008Z · Substantial damage
  > The structural failure of both wings’ leading-edge slats, which resulted in a loss of airplane control.
- [NTSB ANC16LA059](https://openairdocs.org/ntsb/ANC16LA059.md): Wight Carbon CUB CCK-1865 · Wasilla, AK · Accident · No injuries · Limited investigation · Final report · Aug 13, 2016 · N625EX · Substantial damage
  > The failure of the tailwheel suspension assembly during landing due to preexisting fatigue fractures in the suspension system, which resulted in a loss of directional control.
- [NTSB ANC15LA023](https://openairdocs.org/ntsb/ANC15LA023.md): Cessna 185 · Nome, AK · Accident · No injuries · Limited investigation · Final report · Apr 23, 2015 · N4554F · Substantial damage
  > The failure of the left main landing gear leg for reasons that could not be determined based on the available evidence.
- [NTSB ANC14CA080](https://openairdocs.org/ntsb/ANC14CA080.md): Piper PA 18-150 · Aniak, AK · Accident · No injuries · Data collection · Final report · Sep 13, 2014 · N9877D · Substantial damage
  > The pilot's inability to maintain directional control of the airplane resulting in a separation of the wheel axle, resulting in a collision with terrain.
- [NTSB ANC14CA077](https://openairdocs.org/ntsb/ANC14CA077.md): Cessna 185 · Gakona, AK · Accident · No injuries · Data collection · Final report · Sep 7, 2014 · N432X · Substantial damage
  > The pilot's inability to maintain directional control after the airplane's main landing gear tire deflated during takeoff.
- [NTSB ANC13CA075](https://openairdocs.org/ntsb/ANC13CA075.md): Cessna 185D · North Pole, AK · Accident · No injuries · Data collection · Final report · Aug 8, 2013 · N75LE · Substantial damage
  > The malfunction of the right main wheel brake during taxi due to a faulty O-ring in the right brake pedal master cylinder.
- [NTSB ANC13CA046](https://openairdocs.org/ntsb/ANC13CA046.md): Cessna U206G · Nenana, AK · Accident · No injuries · Data collection · Final report · Apr 24, 2013 · N756DJ · Substantial damage
  > Ice accretion in the right main landing gear wheel brake during departure, which prevented the right main landing gear from rotating on landing and resulted in a runway excursion and subsequent impact with a snow bank.
- [NTSB ANC13LA032](https://openairdocs.org/ntsb/ANC13LA032.md): Cessna A185F · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · Mar 8, 2013 · N185FK · Substantial damage
  > The overstress fracture and failure of the right wheel/ski arm while taxiing in snow and water-overflow terrain conditions, which resulted in a noseover.
- [NTSB ANC13CA020](https://openairdocs.org/ntsb/ANC13CA020.md): Cessna A185E · Skwentna, AK · Accident · No injuries · Data collection · Final report · Jan 5, 2013 · N4538F · Substantial damage
  > The pilot's selection of unsuitable terrain for landing, which resulted in a main landing gear collapse.
- [NTSB ANC12LA106](https://openairdocs.org/ntsb/ANC12LA106.md): Cessna A185F · Denali Park, AK · Accident · No injuries · Limited investigation · Final report · Sep 13, 2012 · N4786Q · Substantial damage
  > The pilot’s failure to maintain clearance from an electric transmission line during the approach to land because he was distracted by the airplane’s broken and deflected landing ski. Contributing to the accident was the in-flight failure of the right ski…
- [NTSB ANC12IA085](https://openairdocs.org/ntsb/ANC12IA085.md): Bellanca 8KCAB · Homer, AK · Incident · No injuries · Incident investigation · Final report · Jul 29, 2012 · N5026B · Minor damage
  > The failure of the left main landing gear leg due to fatigue. Contributing to the incident was maintenance personnel's failure to completely remove all corrosion before repainting the gear leg.
- [NTSB ANC12TA035](https://openairdocs.org/ntsb/ANC12TA035.md): Piper PA-18-150 · Paxon, AK · Accident · No injuries · Final report · Apr 28, 2012 · N7059 · Substantial damage
  > A separation of the right main landing gear suspension strut assembly due to overstress, which resulted in the collapse of the main landing gear while landing.
- [NTSB ANC12CA010](https://openairdocs.org/ntsb/ANC12CA010.md): Cessna A185F · Talkeetna, AK · Accident · No injuries · Data collection · Final report · Nov 23, 2011 · N121EE · Substantial damage
  > A broken wheel/ski clevis pin, which allowed the ski to pivot upward and strike the right wing lift strut.
- [NTSB ANC12TA008](https://openairdocs.org/ntsb/ANC12TA008.md): Bellanca 8GCBC · Delta Junction, AK · Accident · No injuries · Final report · Nov 11, 2011 · N88417 · Substantial damage
  > Ice accretion in the main landing gear wheel brakes, which prevented the main landing gear wheels from rotating on landing, which resulted in the airplane nosing over.
- [NTSB ANC11CA095](https://openairdocs.org/ntsb/ANC11CA095.md): Cessna 170A · Anchorage, AK · Accident · No injuries · Data collection · Final report · Sep 5, 2011 · N5406C · Substantial damage
  > The fracture of a hydraulic brake line fitting due to incorrect installation of the brake line by the pilot/owner, which resulted in a loss of brake pressure and subsequent loss of directional control during the landing roll.
- [NTSB ANC11CA072](https://openairdocs.org/ntsb/ANC11CA072.md): Aeronca 7AC · McCarthy, AK · Accident · No injuries · Data collection · Final report · Jul 24, 2011 · N85194 · Substantial damage
  > The separation of the right main landing gear oleo strut assembly, resulting in the collapse of the main landing gear during the landing roll.
- [NTSB ANC11LA006](https://openairdocs.org/ntsb/ANC11LA006.md): Piper PA-31-350 · Saint Michael, AK · Accident · No injuries · Limited investigation · Final report · Dec 22, 2010 · N45052 · Substantial damage
  > The loss of directional control during landing due to a flat nose wheel tire, resulting in a runway excursion and collision with trees.
- [NTSB ANC10LA101](https://openairdocs.org/ntsb/ANC10LA101.md): Cessna 150F · North Pole, AK · Accident · No injuries · Limited investigation · Final report · Oct 1, 2010 · N3569L · Substantial damage
  > The overstress separation of the left nose wheel steering linkage rod end during the takeoff roll, which resulted in a loss of control.
- [NTSB ANC10CA079](https://openairdocs.org/ntsb/ANC10CA079.md): Piper PA-14 · Talkeetna, AK · Accident · No injuries · Data collection · Final report · Aug 26, 2010 · N5114H · Substantial damage
  > A faulty fuel quantity indication in-flight, which precipitated a precautionary off-airport landing, and collision with a road sign.
- [NTSB ANC09LA100](https://openairdocs.org/ntsb/ANC09LA100.md): Grumman G-44A · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Sep 17, 2009 · N86627 · Substantial damage
  > A fatigue fracture of an unapproved hydraulic brake line fitting, which resulted in a loss of control during the landing roll. Contributing to the accident was the installation of an unapproved part by an unknown maintenance personnel.
- [NTSB ANC09LA088](https://openairdocs.org/ntsb/ANC09LA088.md): Cessna 170B · Anchorage, AK · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 2009 · N6073V · Substantial damage
  > The pilot’s decision to make an abrupt and steep low altitude turn just after takeoff, while attempting to return to his departure airport, resulting in an aerodynamic stall and loss of aircraft control. Contributing to the accident was the pilot’s failure to…
- [NTSB ANC09CA075](https://openairdocs.org/ntsb/ANC09CA075.md): Cessna 180 · Buckland, AK · Accident · No injuries · Data collection · Final report · Jul 29, 2009 · N540RT · Substantial damage
  > The improper installation of the right brake cylinder, which allowed a portion of the cylinder to disengage and jam the right rudder/brake pedal, resulting in a loss of directional control during landing. Contributing to the accident was an inadequate…
- [NTSB ANC09GA040](https://openairdocs.org/ntsb/ANC09GA040.md): Robinson Helicopter R44 · Iliamna, AK · Accident · No injuries · Final report · May 12, 2009 · N7196H · Substantial damage
  > The main rotor transmission mount design, which resulted in an in-flight vibration/oscillation, and damage to the helicopter during an emergency descent and hard landing. Contributing to the accident was the lack of information from the manufacturer regarding…
- [NTSB ANC09LA032](https://openairdocs.org/ntsb/ANC09LA032.md): Piper PA-14 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Apr 15, 2009 · N4246H · Substantial damage
  > The pilot's inability to maintain directional control due to the pilot's seat sliding back during takeoff as a result of maintenance personnel's incorrect installation of the seat's forward track stop.
- [NTSB ANC08CA065](https://openairdocs.org/ntsb/ANC08CA065.md): de Havilland DHC-3 · Talkeetna, AK · Accident · No injuries · Data collection · Final report · Apr 28, 2008 · N565TA · Substantial damage
  > The pilot's selection of an unsuitable landing site, which resulted in an overload failure of the tail ski assembly during the landing roll.
- [NTSB ANC08LA055](https://openairdocs.org/ntsb/ANC08LA055.md): Cessna 180 · Kodiak, AK · Accident · No injuries · Limited investigation · Final report · Apr 21, 2008 · N3043E · Substantial damage
  > A loss of control during the landing roll due to a failure or malfunction of the brake system, resulting in a loss of control, and structural damage to the airplane.
- [NTSB ANC08IA033](https://openairdocs.org/ntsb/ANC08IA033.md): Fairchild SA227-AC · Dutch Harbor, AK · Incident · No injuries · Incident investigation · Final report · Jan 18, 2008 · N41NE · No damage
  > The disengagement of the rudder control cable and loose rudder cable retaining pins. A factor contributing to the accident was a wind gust.
- [NTSB ANC08MA038](https://openairdocs.org/ntsb/ANC08MA038.md): Piper PA-31-350 · Kodiak, AK · Accident · 6 fatal · Major investigation · Final report · Jan 5, 2008 · N509FN · Substantial damage
  > The failure of company maintenance personnel to ensure that the airplane's nose baggage door latching mechanism was properly configured and maintained, resulting in an inadvertent opening of the nose baggage door in flight. Contributing to the accident were…

## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '330' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/330/sequence?state=AK

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