# NTSB investigations, AK: Airframe/component/system failure/malfunction

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.

Page 1 of 4 · 173 cases

## Latest cases

- [NTSB ANC07FA109](https://openairdocs.org/ntsb/ANC07FA109.md): Helio H-295 · King Salmon, AK · Accident · 4 fatal · Field investigation · Final report · Oct 1, 2007 · N295BA · Substantial damage
  > A corrosion-induced fatigue fracture of the airplane's left wing to fuselage attachment cap fitting, which resulted in a partial separation of the left wing, and an uncontrolled descent.
- [NTSB ANC07LA060](https://openairdocs.org/ntsb/ANC07LA060.md): Piper PA-18 · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · Jul 2, 2007 · N3195Z · Substantial damage
  > A fracture and collapse of the main landing gear. Contributing to the accident was an inadequate annual inspection by other maintenance personnel, and corrosion.
- [NTSB ANC07LA059](https://openairdocs.org/ntsb/ANC07LA059.md): Piper PA-31 · Kotzebue, AK · Accident · No injuries · Limited investigation · Final report · Jun 29, 2007 · N3535F · Substantial damage
  > Locked parking brakes and the operator's maintenance personnel's failure to properly secure the parking brake cable at its fuselage attaching clamp.
- [NTSB ANC07LA038](https://openairdocs.org/ntsb/ANC07LA038.md): Piper PA-32 · Kenai, AK · Accident · No injuries · Limited investigation · Final report · May 19, 2007 · N4025W · Substantial damage
  > The left main landing gear attaching bolts sheared during landing, which resulted in the left main landing gear collapsing and the left wing and the stabilator striking the ground.
- [NTSB ANC07LA035](https://openairdocs.org/ntsb/ANC07LA035.md): Cessna A185F · Haines, AK · Accident · No injuries · Limited investigation · Final report · May 2, 2007 · N185M · Substantial damage
  > The main landing gear attachment bolts to the right ski sheared during the landing roll in deep snow, resulting in a nose down, and structural damage to the right wing and aileron.
- [NTSB ANC07LA021](https://openairdocs.org/ntsb/ANC07LA021.md): Cessna 402C · Cordova, AK · Accident · No injuries · Limited investigation · Final report · Feb 20, 2007 · N402ET · Substantial damage
  > The failure of the right main landing gear linkage during the landing roll, which resulted in a loss of directional control and the collapse of the right main landing gear. A factor associated with the accident was the failure of company maintenance personnel…
- [NTSB ANC06LA143](https://openairdocs.org/ntsb/ANC06LA143.md): Piper PA-32-300 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Aug 26, 2006 · N4466T · Substantial damage
  > The fracture of the aluminum alloy landing gear adapter assembly, which resulted in a loss of control during the landing roll.
- [NTSB ANC06LA070](https://openairdocs.org/ntsb/ANC06LA070.md): Piper PA-18-150 · Birchwood, AK · Accident · No injuries · Limited investigation · Final report · Jun 3, 2006 · N7452J · Substantial damage
  > The pilot's improper servicing/adjustment of the main landing gear brakes, which resulted in a locked brake and a loss of control while taxiing.
- [NTSB ANC06TA009](https://openairdocs.org/ntsb/ANC06TA009.md): Cessna 185 · Cordova, AK · Accident · Minor injuries · Final report · Nov 5, 2005 · N771X · Substantial damage
  > A fracture and separation of the main landing gear strut during the landing roll, which resulted in a loss of control, and subsequent nose down. Factors contributing to the accident were the manufacturer's and the FAA's insufficient standards/requirements…
- [NTSB ANC05LA143](https://openairdocs.org/ntsb/ANC05LA143.md): Cessna 180C · Igiugig, AK · Accident · No injuries · Limited investigation · Final report · Sep 10, 2005 · N9254T · Substantial damage
  > The failure of the airplane's starter to disengage, which resulted in an overheated starter, smoke in the cockpit, and an emergency landing. A factor associated with the accident was soft terrain encountered during the emergency landing.
- [NTSB ANC05LA136](https://openairdocs.org/ntsb/ANC05LA136.md): Cessna 207 · Kotzebue, AK · Accident · No injuries · Limited investigation · Final report · Sep 2, 2005 · N9964M · Substantial damage
  > The failure of the nose gear steering mechanism during the landing roll, which resulted in a loss of control and subsequent encounter with the runway.
- [NTSB ANC05LA128](https://openairdocs.org/ntsb/ANC05LA128.md): Gardner SR3500 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Aug 22, 2005 · N400KL · Substantial damage
  > The malfunction of the propeller reversing system during landing, which allowed the propeller to reverse pitch in-flight, resulting in an uncontrolled descent and impact with terrain.
- [NTSB ANC05LA097](https://openairdocs.org/ntsb/ANC05LA097.md): Helio H-250 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Jul 7, 2005 · N333TB · Substantial damage
  > A fracture failure of the main landing gear leg during the landing roll, which resulted in the collapse of the main landing gear.
- [NTSB ANC05LA087](https://openairdocs.org/ntsb/ANC05LA087.md): Cessna U206F · Homer, AK · Accident · No injuries · Limited investigation · Final report · Jun 15, 2005 · N7138Q · Substantial damage
  > The fracture of the airplane's nose gear scissor during landing, which resulted in a loss of control during the landing roll, and a nose down. A factor associated with the accident was the loss of nosewheel steering control.
- [NTSB ANC05LA075](https://openairdocs.org/ntsb/ANC05LA075.md): Piper PA-31-350 · Elim, AK · Accident · No injuries · Limited investigation · Final report · May 10, 2005 · N3535F · Substantial damage
  > An improper installation of a fuel line fitting by company maintenance personnel, which resulted in a fuel leak and subsequent in-flight engine compartment fire during cruise flight that was discovered during the landing roll.
- [NTSB ANC05IA064](https://openairdocs.org/ntsb/ANC05IA064.md): McDonnell Douglas MD-11 · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Apr 28, 2005 · N277WA · Minor damage
  > The inadequate installation of the cockpit security door locking device, which resulted in smoke in the cockpit during normal cruise, and a precautionary landing. A factor associated with the incident was the manufacturer's insufficiently defined installation…
- [NTSB ANC05LA055](https://openairdocs.org/ntsb/ANC05LA055.md): Britten-Norman BN-2A Islander · Klawock, AK · Accident · No injuries · Limited investigation · Final report · Apr 6, 2005 · N29884 · Substantial damage
  > The fracture of the aluminum alloy landing gear bracket assembly, which resulted in a loss of control during the landing roll.
- [NTSB ANC05LA051](https://openairdocs.org/ntsb/ANC05LA051.md): Arctic S-1B2 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Mar 19, 2005 · N67AT · Substantial damage
  > A main landing gear collapse during the landing touch down due to a non-secured clevis bolt at the common attach point on the landing gear oleo shock.
- [NTSB ANC05IA048](https://openairdocs.org/ntsb/ANC05IA048.md): Reims F406 · Nome, AK · Incident · No injuries · Incident investigation · Final report · Mar 9, 2005 · N6591R · Minor damage
  > The failure of the nose gear up lock actuator bracket during the landing approach due to fatigue cracking, which resulted in a nose wheel up landing. A factor associated with the incident is the mechanical binding of the nose wheel locking mechanism.
- [NTSB ANC05LA046](https://openairdocs.org/ntsb/ANC05LA046.md): de Havilland DHC-2 · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · Mar 7, 2005 · N3307S · Substantial damage
  > Aerodynamic flutter of the ailerons during normal cruise flight due to their improper maintenance/balancing, which resulted in structural damage to the airplane's wings.
- [NTSB ANC05IA016](https://openairdocs.org/ntsb/ANC05IA016.md): Boeing 747SR-146B SF · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Dec 5, 2004 · JA8158 · Minor damage
  > The fatigue and subsequent fracture of a portion of the airplane's pressure bulkhead, which resulted in a rapid decompression during cruise flight.
- [NTSB ANC04FA092](https://openairdocs.org/ntsb/ANC04FA092.md): Maule M-5-235C · Seward, AK · Accident · 2 fatal · Field investigation · Final report · Aug 15, 2004 · N6194M · Substantial damage
  > The failure of an aviation mechanic/inspector to adequately inspect the pilot/owner's work during the engine overhaul, which resulted in a loss of engine oil and engine power during cruise flight, and a subsequent ditching. Factors associated with the…
- [NTSB ANC04LA020](https://openairdocs.org/ntsb/ANC04LA020.md): Cessna 172 · Girdwood, AK · Accident · No injuries · Limited investigation · Final report · Jan 25, 2004 · N1361U · Substantial damage
  > The pilot's delay in aborting the takeoff, which resulted in an overrun and collision with a snowbank. A factor in the accident was an inoperative airspeed indicator.
- [NTSB ANC04LA011](https://openairdocs.org/ntsb/ANC04LA011.md): Cessna 402 · Galena, AK · Accident · No injuries · Limited investigation · Final report · Nov 13, 2003 · N402ET · Substantial damage
  > Water contamination and freezing of the landing gear actuator that prevented the extension of the right main landing gear, resulting in a gear-up landing. Factors contributing to the accident were freezing temperatures at the accident location, and inadequate…
- [NTSB ANC04LA004](https://openairdocs.org/ntsb/ANC04LA004.md): Cessna 195B · North Pole, AK · Accident · No injuries · Limited investigation · Final report · Oct 17, 2003 · N3050B · Substantial damage
  > A fracture of the left brake master cylinder actuator rod, which resulted in failure of the left brake, a loss of directional control and an inadvertent ground loop during landing, and the separation of the left main landing gear strut due to fatigue. Factors…
- [NTSB ANC03LA128](https://openairdocs.org/ntsb/ANC03LA128.md): Cessna 206 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Sep 18, 2003 · N275F · Substantial damage
  > A failure of an attaching bolt that allowed the nose wheel fork to separate from the nose gear strut, which resulted in the collapse of the nose gear during the landing roll. A factor contributing to the accident was rough/uneven terrain.
- [NTSB ANC03LA074](https://openairdocs.org/ntsb/ANC03LA074.md): Beech 58 · Hoonah, AK · Accident · No injuries · Limited investigation · Final report · Jul 8, 2003 · N3178A · Substantial damage
  > The locking of the left brake during the landing roll, which resulted in the collapse of the left main landing gear.
- [NTSB ANC03LA069](https://openairdocs.org/ntsb/ANC03LA069.md): Cessna 172 · Seldovia, AK · Accident · No injuries · Limited investigation · Final report · Jul 4, 2003 · N63541 · Substantial damage
  > The failure of company maintenance personnel to properly maintain the airplane's brake system, which resulted in a loss of the right brake during landing roll due to a chafed brake line.
- [NTSB ANC03IA037](https://openairdocs.org/ntsb/ANC03IA037.md): Cessna 206 · Homer, AK · Incident · No injuries · Incident investigation · Final report · Mar 1, 2003 · N8337Q · Minor damage
  > The separation of the main landing gear spring strut during landing touchdown due to corrosion and fatigue. Factors contributing to the accident were the manufacturer's and the FAA's insufficient standards/requirements for inspection procedures.
- [NTSB ANC03LA021](https://openairdocs.org/ntsb/ANC03LA021.md): de Havilland DHC-3 · Nikolai, AK · Accident · No injuries · Limited investigation · Final report · Dec 28, 2002 · N3904 · Substantial damage
  > An improper and undocumented major repair of the elevator torque tube support assembly by an unknown person, which resulted in an in-flight disconnection of the airplane's right elevator, and a jammed rudder. A factor associated with the accident is the…
- [NTSB ANC03IA001](https://openairdocs.org/ntsb/ANC03IA001.md): Boeing 747-400 · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Oct 10, 2002 · N661US · No damage
  > The fatigue fracture of the lower rudder power control module manifold, which resulted in a lower rudder hardover.
- [NTSB ANC02LA122](https://openairdocs.org/ntsb/ANC02LA122.md): Cessna 206 · Circle, AK · Accident · No injuries · Limited investigation · Final report · Sep 17, 2002 · N8515Q · Substantial damage
  > A partial separation of the nose wheel flange from the hub that resulted in a nose over during the landing roll.
- [NTSB ANC02LA099](https://openairdocs.org/ntsb/ANC02LA099.md): Maule M-7-235 · Palmer, AK · Accident · No injuries · Limited investigation · Final report · Aug 19, 2002 · N897M · Substantial damage
  > The fracture of the right main landing gear axle during landing roll. Factors associated with the accident were corrosion of the landing gear axle, failure of company maintenance personnel to adequately inspect the axle and detect the corrosion, and rough and…
- [NTSB ANC02LA089](https://openairdocs.org/ntsb/ANC02LA089.md): Helio H-295 · Fort Yukon, AK · Accident · No injuries · Limited investigation · Final report · Aug 2, 2002 · N50718 · Substantial damage
  > The failure of the axle shaft, which resulted in the separation of the right main tire/wheel from the airplane on landing.
- [NTSB ANC02LA069](https://openairdocs.org/ntsb/ANC02LA069.md): Piper PA-32-300 · Kake, AK · Accident · Minor injuries · Limited investigation · Final report · Jun 25, 2002 · N2947N · Substantial damage
  > The in-flight separation of the upper engine cowling from the airplane. A factor contributing to the accident was the soft, sandy terrain of the landing area.
- [NTSB ANC02LA050](https://openairdocs.org/ntsb/ANC02LA050.md): Cessna 185F · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · Jun 15, 2002 · N333DG · Substantial damage
  > A fracture failure of the lower end of the spring steel landing gear strut. Factors contributing to the accident were the manufacturer's and the FAA's insufficient standards/requirements for inspection procedures.
- [NTSB ANC02LA034](https://openairdocs.org/ntsb/ANC02LA034.md): Cessna 170B · North Pole, AK · Accident · No injuries · Limited investigation · Final report · May 16, 2002 · N4669C · Substantial damage
  > The separation of the right main landing gear from the airplane during landing. A factor associated with the accident is the unapproved hardware used to attach the main landing gear.
- [NTSB ANC02FA029](https://openairdocs.org/ntsb/ANC02FA029.md): Eurocopter AS-350-B2 · Valdez, AK · Accident · No injuries · Field investigation · Final report · Apr 11, 2002 · N917JT · Substantial damage
  > The pilot's failure to disengage the hydraulic system, and maintain forward airspeed during landing as delineated in the emergency procedures section of the helicopter's operations manual, which resulted in a loss of control while hovering. Factors…
- [NTSB ANC02LA026](https://openairdocs.org/ntsb/ANC02LA026.md): Interstate S-1B1 · Big Lake, AK · Accident · No injuries · Limited investigation · Final report · Mar 29, 2002 · N48027 · Substantial damage
  > The separation of the exhaust system stack from the heat exchanger. A factor associated with the accident was an engine compartment fire.
- [NTSB ANC02IA007](https://openairdocs.org/ntsb/ANC02IA007.md): Douglas DC-8-71F · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Dec 14, 2001 · N825BX · No damage
  > The asymmetrical activation of the left wing spoiler due to a broken retraction cable during takeoff. A factor associated with the incident was the operator's inadequate inspection of the cable.
- [NTSB ANC01LA136](https://openairdocs.org/ntsb/ANC01LA136.md): Cessna 185F · King Salmon, AK · Accident · No injuries · Limited investigation · Final report · Sep 2, 2001 · N177BM · Substantial damage
  > An overload failure of the main axle attaching bolts, and subsequent separation of the axle from the landing gear strut.
- [NTSB ANC01LA109](https://openairdocs.org/ntsb/ANC01LA109.md): Sikorsky S61A · Wrangell, AK · Accident · No injuries · Limited investigation · Final report · Aug 11, 2001 · N5193Y · Substantial damage
  > The separation of a steel long line cable that failed and rebounded from a load of logs into the helicopter's main and tail rotors.
- [NTSB ANC01LA116](https://openairdocs.org/ntsb/ANC01LA116.md): Piper PA-18 · Anaktuvuk Pass, AK · Accident · No injuries · Limited investigation · Final report · Aug 6, 2001 · N4167Z · Substantial damage
  > A failure of the landing gear strut assembly due to corrosion. A factor in the accident was the pilot's inadequate maintenance of the airplane.
- [NTSB ANC01LA097](https://openairdocs.org/ntsb/ANC01LA097.md): Piper PA-12 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Aug 2, 2001 · N7775H · Substantial damage
  > The loss of left brake pressure due to a missing hydraulic brake fitting.
- [NTSB ANC01LA057](https://openairdocs.org/ntsb/ANC01LA057.md): Cessna 206 · Stebbins, AK · Accident · No injuries · Limited investigation · Final report · May 15, 2001 · N756DJ · Substantial damage
  > A jammed control yoke during landing, an entangled wiring harness, and inadequate maintenance by company personnel. A factor associated with the accident was the pilot's inability to flare the airplane during landing, due to the mechanical malfunction.
- [NTSB ANC01LA055](https://openairdocs.org/ntsb/ANC01LA055.md): Cessna 170B · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · May 8, 2001 · N3143A · Substantial damage
  > A failure of the tailwheel spring assembly due to fatigue during touch and go landings. A factor in the accident was an inadequate annual inspection by maintenance personnel.
- [NTSB ANC01LA023](https://openairdocs.org/ntsb/ANC01LA023.md): Cessna 180 · Chugiak, AK · Accident · No injuries · Limited investigation · Final report · Dec 14, 2000 · N4955A · Substantial damage
  > The failure of a mechanic to ensure the throttle linkage was secure. A factor in the accident was the pilot's failure to take remedial action during an emergency landing and overrun.
- [NTSB ANC00LA122](https://openairdocs.org/ntsb/ANC00LA122.md): Piper PA-22 · Dillingham, AK · Accident · No injuries · Limited investigation · Final report · Sep 13, 2000 · N8DG · Substantial damage
  > A malfunctioning main landing gear brake, which precipitated a ground-loop.
- [NTSB ANC00GA121](https://openairdocs.org/ntsb/ANC00GA121.md): Beech F-90 · Anchorage, AK · Accident · No injuries · Final report · Sep 12, 2000 · N15 · Substantial damage
  > The failure of the right main landing gear drag leg (scissors) attach point, which resulted in the landing gear becoming jammed against the landing gear door during the extension cycle.
- [NTSB ANC00LA105](https://openairdocs.org/ntsb/ANC00LA105.md): Cessna 185 · Yakutat, AK · Accident · No injuries · Limited investigation · Final report · Aug 17, 2000 · N185M · Substantial damage
  > The total fatigue failure of the right main landing gear leg.

Next page: https://openairdocs.org/ntsb.md?state=AK&occurrence=130&page=2

## 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" = 130)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=130&state=AK

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