# NTSB investigations, AK: Unknown

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 3 · 105 cases

## Latest cases

- [NTSB ANC26LA071](https://openairdocs.org/ntsb/ANC26LA071.md): Bellanca 7GCBC · Skwentna, AK · Accident · Serious injuries · Class 4 · Limited · Investigation open · Jul 11, 2026 · N11647 · Substantial damage
- [NTSB ANC25FA035](https://openairdocs.org/ntsb/ANC25FA035.md): Cessna T207 · Nanwalek, AK · Accident · 2 fatal · Class 3 · Field · Preliminary report · Apr 28, 2025 · N91025 · Substantial damage
  > On April 28, 2025, about 1355 Alaska daylight time, a Cessna T207 airplane, N91025, was substantially damaged when it was involved in an accident near Nanwalek, Alaska. The pilot and one passenger were fatally injured. One passenger was seriously injured. The…
- [NTSB ANC25FA001](https://openairdocs.org/ntsb/ANC25FA001.md): Cessna 180 · Big Lake, AK · Accident · 1 fatal · Class 3 · Field · Preliminary report · Oct 5, 2024 · N4631U · Substantial damage
  > On October 4, 2024, about 1730 Alaska daylight time, a float-equipped Cessna 180 airplane, N4631U, sustained substantial damage when it was involved in an accident near Big Lake, Alaska. The pilot was fatally injured, and one passenger sustained serious…
- [NTSB ANC24FA091](https://openairdocs.org/ntsb/ANC24FA091.md): Champion 7GCBC · Ninilchik, AK · Accident · 2 fatal · Class 3 · Field · Preliminary report · Sep 13, 2024 · N8CK · Substantial damage
  > On September 13, 2024, about 0803 Alaska daylight time (AKDT), a Champion (Citabria) 7GCBC, N8CK, was substantially damaged when it was involved in an accident near Ninilchik, Alaska. The pilot and passenger were fatally injured. The airplane was operated as…
- [NTSB ANC24FA085](https://openairdocs.org/ntsb/ANC24FA085.md): Piper PA-18-150 · McGrath, AK · Accident · 1 fatal · Class 3 · Field · Final report · Aug 31, 2024 · N7154Z · Substantial damage
  > The pilot's exceedance of the airplane’s critical angle of attack while maneuvering for landing, which resulted in an aerodynamic stall and loss of control.
- [NTSB ANC24FA052](https://openairdocs.org/ntsb/ANC24FA052.md): Piper PA-18-150 · Moose Pass, AK · Accident · 2 fatal · Class 3 · Field · Preliminary report · Jun 18, 2024 · N645DT · Substantial damage
  > On June 18, 2024, about 1400 Alaska daylight time, a float-equipped Piper PA-18-150 airplane, N645DT, was substantially damaged when it was involved in an accident near Moose Pass, Alaska. The instructor pilot and the pilot receiving instruction were fatally…
- [NTSB ANC22LA020](https://openairdocs.org/ntsb/ANC22LA020.md): Piper PA-18-135 · Wasilla, AK · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 27, 2022 · N99640 · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB ANC21LA047](https://openairdocs.org/ntsb/ANC21LA047.md): Piper J3C-65 · Sterling, AK · Accident · No injuries · Class 3 · Limited · Final report · Jun 28, 2021 · N98109 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB WPR21LA164](https://openairdocs.org/ntsb/WPR21LA164.md): Cessna 208B · Fairbanks, AK · Accident · No injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N215MC · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB ANC18FA071](https://openairdocs.org/ntsb/ANC18FA071.md): Piper PA-12-150 · Healy, AK · Accident · 2 fatal · Field investigation · Final report · Sep 23, 2018 · N7511H · Substantial damage
  > An impact with terrain for reasons that could not be determined based on the available information.
- [NTSB ANC15FA032](https://openairdocs.org/ntsb/ANC15FA032.md): Cessna 207 · Bethel, AK · Accident · 1 fatal · Field investigation · Final report · May 30, 2015 · N1653U · Substantial damage
  > The pilot's failure to maintain altitude, which resulted in collision with the terrain. Contributing to the accident was the pilot's impairment from carbon monoxide exposure in flight. The source of the carbon monoxide could not be determined because the…
- [NTSB ENG14IA016](https://openairdocs.org/ntsb/ENG14IA016.md): Douglas C 118A · Emmonak, AK · Incident · No injuries · Incident investigation · Final report · Feb 25, 2014 · N351CE · Minor damage
  > The fatigue failure of the lower wing skin due to aging mechanisms. Contributing to the failure were lower wing skin inspection procedures insufficient to identify the crack.
- [NTSB ANC13FAMS2](https://openairdocs.org/ntsb/ANC13FAMS2.md): Piper PA-32-260 · Yakutat, AK · Accident · 1 fatal · Missing aircraft · Final report · Sep 9, 2013 · N3705W · Destroyed
  > Undetermined because the pilot and airplane were not found.
- [NTSB ANC13FAMS1](https://openairdocs.org/ntsb/ANC13FAMS1.md): Piper PA-18-150 · Kenai, AK · Accident · 1 fatal · Missing aircraft · Final report · Oct 13, 2012 · N444LZ · Destroyed
  > Undetermined. The airplane and pilot were not found.
- [NTSB ANC10FA100](https://openairdocs.org/ntsb/ANC10FA100.md): Dehavilland DHC-2 · Katmai National Park, AK · Accident · 4 fatal · Field investigation · Final report · Aug 21, 2010 · N9313Z · Substantial damage
  > Undetermined.
- [NTSB ANC09FAMS1](https://openairdocs.org/ntsb/ANC09FAMS1.md): Beech V35A · Northway, AK · Accident · 2 fatal · Missing aircraft · Final report · Jun 21, 2009 · N7062N · Substantial damage
  > The cause of this accident is unknown; the airplane is missing.
- [NTSB ANC06FAMS1](https://openairdocs.org/ntsb/ANC06FAMS1.md): Aero Commander 690A · Anchorage, AK · Accident · 3 fatal · Missing aircraft · Final report · Jul 29, 2006 · N57096 · Destroyed
  > Undetermined; the airplane and its occupants are missing.
- [NTSB ANC04FAMS2](https://openairdocs.org/ntsb/ANC04FAMS2.md): de Havilland DHC-2 · Sitka, AK · Accident · 5 fatal · Missing aircraft · Final report · Sep 20, 2004 · N712TS · Destroyed
  > Reason for occurrence is undetermined. The airplane is missing.
- [NTSB ANC03FAMS1](https://openairdocs.org/ntsb/ANC03FAMS1.md): Alon A-2 (Aircoupe) · Ketchikan, AK · Accident · 2 fatal · Missing aircraft · Final report · Aug 17, 2003 · N6520Q · Destroyed
  > Undetermined..
- [NTSB ANC03LA067](https://openairdocs.org/ntsb/ANC03LA067.md): Cessna 180 · Anchor Point, AK · Accident · 3 fatal · Limited investigation · Final report · Jun 25, 2003 · N91303 · Destroyed
  > An in-flight collision with water for an undetermined reason.
- [NTSB ANC03LA022](https://openairdocs.org/ntsb/ANC03LA022.md): Cessna 180 · Petersburg, AK · Accident · 1 fatal · Limited investigation · Final report · Dec 13, 2002 · N9701G · Destroyed
  > An in flight collision with ocean water for an undetermined reason.
- [NTSB ANC02FA070](https://openairdocs.org/ntsb/ANC02FA070.md): Zawada Super Cuby · Cantwell, AK · Accident · 2 fatal · Field investigation · Final report · Jul 4, 2002 · N43Z · Substantial damage
  > The pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall, and subsequent collision with terrain. A contributing factor was the pilot's impairment from the effects of prescription painkilling drugs.
- [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 ANC01FA084](https://openairdocs.org/ntsb/ANC01FA084.md): Maule M-5-235C · Bettles, AK · Accident · 4 fatal · Field investigation · Final report · Jul 15, 2001 · N9237E · Substantial damage
  > The pilot's inadvertent stall of the airplane during an unknown phase of flight.
- [NTSB ANC01FAMS1](https://openairdocs.org/ntsb/ANC01FAMS1.md): Champion 8GCBC · Juneau, AK · Accident · 2 fatal · Missing aircraft · Final report · Dec 27, 2000 · N7100C · Destroyed
  > Undetermined. Missing airplane.
- [NTSB ANC99FAMS2](https://openairdocs.org/ntsb/ANC99FAMS2.md): Piper PA-28R-200 · Chitina, AK · Accident · 1 fatal · Missing aircraft · Final report · Aug 18, 1999 · N56877 · Destroyed
  > Undetermined.
- [NTSB ANC99LA105](https://openairdocs.org/ntsb/ANC99LA105.md): Nix Avid Flyer · Chugiak, AK · Accident · No injuries · Limited investigation · Final report · Jul 18, 1999 · UNREG · Substantial damage
  > A loss of engine power for an undetermined reason.
- [NTSB ANC99LA065](https://openairdocs.org/ntsb/ANC99LA065.md): Stinson 108 · Anchorage, AK · Accident · 1 fatal · Limited investigation · Final report · May 24, 1999 · N793C · Destroyed
  > Undetermined.
- [NTSB ANC99FAMS1](https://openairdocs.org/ntsb/ANC99FAMS1.md): Piper PA-24-260 · Juneau, AK · Accident · 2 fatal · Missing aircraft · Final report · May 2, 1999 · N8694P · Destroyed
  > Undetermined. Missing aircraft.
- [NTSB ANC98FA168](https://openairdocs.org/ntsb/ANC98FA168.md): Cessna TU-206G · Ketchikan, AK · Accident · 1 fatal · Field investigation · Final report · Sep 29, 1998 · N4820U · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions. Contributing factors were low ceilings and mountainous/hilly terrain.
- [NTSB ANC98FA152](https://openairdocs.org/ntsb/ANC98FA152.md): Cessna 207 · Kotzebue, AK · Accident · 1 fatal · Field investigation · Final report · Sep 17, 1998 · N1809Q · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions. Factors associated with the accident were low ceilings, mountainous/hilly terrain features, rain, and fog.
- [NTSB ANC98FA043](https://openairdocs.org/ntsb/ANC98FA043.md): Taylorcraft BL12 · Sitka, AK · Accident · 1 fatal · Field investigation · Final report · Apr 28, 1998 · N33902 · Destroyed
  > The pilot's attempted VFR flight into instrument meteorological conditions. Contributing factors were clouds, the pilot's lack of instrument flight experience, obscuration and mountainous terrain.
- [NTSB ANC98GA036](https://openairdocs.org/ntsb/ANC98GA036.md): Cessna 185F · Nightmute, AK · Accident · 2 fatal · Final report · Apr 9, 1998 · N5485R · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions which resulted in spatial disorientation and subsequent loss of aircraft control. Factors in the accident were meteorological conditions consisting of low ceilings, and blowing snow,…
- [NTSB ANC98LA001](https://openairdocs.org/ntsb/ANC98LA001.md): Piper PA-22-160 · Sterling, AK · Accident · 1 fatal · Limited investigation · Final report · Oct 3, 1997 · N8955D · Destroyed
  > Undetermined.
- [NTSB ANC97FAMS1](https://openairdocs.org/ntsb/ANC97FAMS1.md): Cessna 182F · Talkeetna, AK · Accident · 4 fatal · Missing aircraft · Final report · Jun 29, 1997 · N3186U · Destroyed
  > Undetermined.
- [NTSB ANC96FAMS1](https://openairdocs.org/ntsb/ANC96FAMS1.md): Grumman G21-G · Dutch Harbor, AK · Accident · 2 fatal · Missing aircraft · Final report · Aug 12, 1996 · N660PA · Destroyed
  > Undetermined.
- [NTSB ANC96FA081](https://openairdocs.org/ntsb/ANC96FA081.md): Robinson R-22 Mariner · Mekoryuk, AK · Accident · 1 fatal · Field investigation · Final report · Jun 4, 1996 · N113CF · Destroyed
  > A loss of engine power due to fuel contamination found in the fuel supply and helicopter fuel system. Factors in the accident were the pilot's inadequate filtration (servicing of the helicopter) of the fuel supply, and the pilot's inadequate performance of…
- [NTSB ANC96FA079](https://openairdocs.org/ntsb/ANC96FA079.md): Republic RC-3 Seabee · Ketchikan, AK · Accident · 2 fatal · Field investigation · Final report · May 25, 1996 · N99FJ · Destroyed
  > the airplane crashed for undetermined reason(s).
- [NTSB ANC95FAMS1](https://openairdocs.org/ntsb/ANC95FAMS1.md): Cessna 206 · Kenai, AK · Accident · 1 fatal · Missing aircraft · Final report · Dec 3, 1994 · N5282U · Substantial damage
  > Undetermined.
- [NTSB ANC94LA133](https://openairdocs.org/ntsb/ANC94LA133.md): Champion 7ECA · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Sep 10, 1994 · N68522 · Substantial damage
  > Undetermined.
- [NTSB ANC94LA127](https://openairdocs.org/ntsb/ANC94LA127.md): Piper PA-12 · Eagle, AK · Accident · No injuries · Limited investigation · Final report · Jul 30, 1994 · N3849M · Substantial damage
  > Undetermined.
- [NTSB ANC93LA143](https://openairdocs.org/ntsb/ANC93LA143.md): Artic S-1B2 · Johnson Glacier, AK · Accident · 2 fatal · Limited investigation · Final report · Jul 31, 1993 · N59AT · Destroyed
  > The pilot's attempted flight in an airplane which exceeded the maximum allowable weight. The high mountainous terrain was a factor.
- [NTSB ANC93LA130](https://openairdocs.org/ntsb/ANC93LA130.md): Cessna 170 · Dry Bay, AK · Accident · 2 fatal · Limited investigation · Final report · Jul 30, 1993 · N8190A · Destroyed
  > Undetermined.
- [NTSB ANC93FA148](https://openairdocs.org/ntsb/ANC93FA148.md): Champion 7EC · Chugiak, AK · Accident · 1 fatal · Field investigation · Final report · Oct 9, 1992 · N8958R · Destroyed
  > Collision with the terrain for an unknown reason.
- [NTSB ANC92FAMS3](https://openairdocs.org/ntsb/ANC92FAMS3.md): Beech 35 · Missing, AK · Accident · 2 fatal · Missing aircraft · Final report · Aug 17, 1992 · N216JB · Destroyed
  > Missing aircraft due to undetermined causes and factors
- [NTSB ANC92FAMS2](https://openairdocs.org/ntsb/ANC92FAMS2.md): Cessna 340 · Yakutat, AK · Accident · 5 fatal · Missing aircraft · Final report · May 4, 1992 · N69469 · Destroyed
  > Missing aircraft due to undetermined causes.
- [NTSB ANC91LA043](https://openairdocs.org/ntsb/ANC91LA043.md): Piper PA-31T · Kenai, AK · Accident · No injuries · Limited investigation · Final report · Mar 31, 1991 · N308SC · Substantial damage
  > The failed nose gear shimmy dampner, contributing to the accident was the rough ice and snow covered ramps where the airplane had been operating and the lack of maintenance on the runways.
- [NTSB ANC91GAMS1](https://openairdocs.org/ntsb/ANC91GAMS1.md): Gulfstream Aerospace 690C · Deadhorse, AK · Accident · 3 fatal · Final report · Oct 12, 1990 · N45Q · Destroyed
  > Missing aircraft.
- [NTSB ANC90LA143](https://openairdocs.org/ntsb/ANC90LA143.md): Piper PA-18-150 · Aniak, AK · Accident · 2 fatal · Limited investigation · Final report · Aug 12, 1990 · N3946Z · Substantial damage
  > Pilot lost control of the airplane as a result of encountering severe weather either during takeoff or landing. Contributing to the accident was the severe weather, rough water surface, and self-induced pressure to fly by the pilot.
- [NTSB ANC89FA144](https://openairdocs.org/ntsb/ANC89FA144.md): Piper PA-12 · Windy Fork, AK · Accident · 2 fatal · Field investigation · Final report · Aug 13, 1989 · N7542H · Destroyed
  > Failure of the pilot to maintain airspeed while operating to or from the gravel bar, which resulted in an inadvertent stall. The rising terrain was considered a contributing factor.

Next page: https://openairdocs.org/ntsb-phases/990/cases.md?state=AK&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
  crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
  current_codes AS (
    SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
      row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
    FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
    WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
      AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
  ),
  phases AS (
    SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
    FROM current_codes WHERE n = 1
    UNION ALL
    SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
    FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
    WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
  ),
  case_phases AS (
    SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
    FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
    LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
    WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
  )
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 case_mkey FROM case_phases WHERE main = 990)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/990/cases?state=AK

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