# NTSB investigations, AK: Other

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 ANC22LA006](https://openairdocs.org/ntsb/ANC22LA006.md): Cub Crafters CC-18-180 · Yukon Charlie River, AK · Accident · No injuries · Class 4 · Limited · Final report · Nov 9, 2021 · N413CC · Substantial damage
  > The pilot’s selection of an unsuitable landing site, which resulted in a nose-over.
- [NTSB ANC11CA066](https://openairdocs.org/ntsb/ANC11CA066.md): Bellanca 8GCBC · Kantishna, AK · Accident · No injuries · Data collection · Final report · Jul 19, 2011 · N5043N · Substantial damage
  > The pilot's inadequate decision to make contact with an unsuitable landing surface, resulting in a nose over.
- [NTSB ANC09CA006](https://openairdocs.org/ntsb/ANC09CA006.md): Bellanca 7GCBC · Skwentna, AK · Accident · No injuries · Data collection · Final report · Oct 17, 2008 · N57446 · Substantial damage
  > The pilot's selection of unsuitable terrain for landing.
- [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 ANC00LA134](https://openairdocs.org/ntsb/ANC00LA134.md): Piper PA-18-105 · Slana, AK · Accident · No injuries · Limited investigation · Final report · Sep 29, 2000 · N5489H · Substantial damage
  > The pilot's inadvertent touch down. A factor associated with the accident was deep snow on the airstrip.
- [NTSB ANC96LA004](https://openairdocs.org/ntsb/ANC96LA004.md): Piper PA-18 · Tyonek, AK · Accident · No injuries · Limited investigation · Final report · Oct 7, 1995 · N4463Z · Substantial damage
  > Improper planning/decision by the pilot concerning his method of testing the landing area. His selection of an unsuitable area was a related factor.
- [NTSB ANC90LA170](https://openairdocs.org/ntsb/ANC90LA170.md): Bell 206B · Kokhanok, AK · Accident · Serious injuries · Limited investigation · Final report · Sep 9, 1990 · N385EH · Substantial damage
  > The failure of the compressor end of the air compressor scroll to tee tube assembly causing the engine to spool down. The forced landing in eneven, unprepared, and lightly forested terrain were factors.
- [NTSB ANC90LA074](https://openairdocs.org/ntsb/ANC90LA074.md): Cessna 150 · Palmer, AK · Accident · No injuries · Limited investigation · Final report · May 23, 1990 · N66425 · Substantial damage
  > The flight instructor's failure to use carburetor heat during a simulated engine failure. The rough terrain and weather conditions conducive to carburetor icing were contributing factors.
- [NTSB ANC86LA062](https://openairdocs.org/ntsb/ANC86LA062.md): Lake LA-4-200 · Lake Clark, AK · Accident · 3 fatal · Limited investigation · Final report · May 24, 1986 · N6190V · Destroyed
  > The aircraft crashed in Lake Clark, Alaska, and sank into 170 feet of water. There were no witnesses to the accident; the aircraft was not recovered.
- [NTSB ANC85LA177](https://openairdocs.org/ntsb/ANC85LA177.md): Cessna A185F · Cordova, AK · Accident · No injuries · Limited investigation · Final report · Sep 15, 1985 · N80124 · Substantial damage
  > The plt stated that prior to landing, the acft's right brake had no pressure. He reported that after he landed, the tail wheel began to shimmy & the acft pulled to the left. He applied full right rudder, but was unable to prevent the acft from ground looping…
- [NTSB ANC82DA023](https://openairdocs.org/ntsb/ANC82DA023.md): Piper PA-18 · Near Gulkana, AK · Accident · No injuries · Final report · Mar 2, 1982 · N8293C · Substantial damage
  > The pilot stated that he arrived at crosswinds lake, made a low pass and attempted to contact the wheels on the snow to determine if a landing was possible. The wheels broke through the crust on the snow and the aircraft flipped over.

## 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 = 800)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/800/cases?state=AK

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.