# NTSB investigations, AK: Abrupt maneuver

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 ANC21LA062](https://openairdocs.org/ntsb/ANC21LA062.md): Dehavilland DHC-2 MK 1 · King Salmon, AK · Accident · No injuries · Class 4 · Limited · Final report · Jul 19, 2021 · N68080 · Substantial damage
  > The pilot’s exceedance of the floatplane’s critical angle of attack, which resulted in an aerodynamic stall and subsequent loss of control.
- [NTSB ANC19FA029](https://openairdocs.org/ntsb/ANC19FA029.md): Maule M6 · Moose Pass, AK · Accident · 3 fatal · Field investigation · Final report · Jun 29, 2019 · N56512 · Substantial damage
  > The pilot's geographic disorientation and his exceedance of the airplane's critical angle of attack while maneuvering to avoid mountainous terrain, resulting in an aerodynamic stall.
- [NTSB GAA17CA381](https://openairdocs.org/ntsb/GAA17CA381.md): Aeronca 7AC · Soldotna, AK · Accident · No injuries · Data collection · Final report · Jun 4, 2017 · N82639 · Substantial damage
  > The pilot’s abrupt maneuver to avoid a moose cow and calf during taxi, which resulted in an impact with a tree.
- [NTSB GAA16CA440](https://openairdocs.org/ntsb/GAA16CA440.md): Piper PA 18-150 · Palmer, AK · Accident · No injuries · Data collection · Final report · Aug 19, 2016 · N5408Y · Substantial damage
  > The pilot's excessive brake application during the landing roll resulting in a nose over.
- [NTSB GAA16CA141](https://openairdocs.org/ntsb/GAA16CA141.md): Maule M 4 · Anchorage, AK · Accident · No injuries · Data collection · Final report · Feb 13, 2016 · N2032U · Substantial damage
  > The inadvertent rudder input by the passenger, resulting in a runway excursion during takeoff and collision with a taxiway sign.
- [NTSB ANC14LA056](https://openairdocs.org/ntsb/ANC14LA056.md): Piper PA-22 · Dillingham, AK · Accident · No injuries · Limited investigation · Final report · Jul 28, 2014 · N8883C · Substantial damage
  > The pilot’s failure to maintain directional control during the landing due to his decision to attempt a landing with a quartering tailwind, which resulted in a ground loop and impact with the runway surface.
- [NTSB ANC13FA054](https://openairdocs.org/ntsb/ANC13FA054.md): Dehavilland Beaver DHC-2 MK.1 · Petersburg, AK · Accident · 1 fatal · Field investigation · Final report · Jun 4, 2013 · N616W · Substantial damage
  > The pilot’s failure to maintain adequate altitude above the trees, and his subsequent failure to maintain adequate airspeed while maneuvering to avoid the trees, which resulted in an inadvertent aerodynamic stall/spin and an uncontrolled descent.
- [NTSB ANC11FA091](https://openairdocs.org/ntsb/ANC11FA091.md): Cessna 208B · Nightmute, AK · Accident · 1 fatal · Field investigation · Final report · Sep 2, 2011 · N207DR · 2 aircraft · Destroyed
  > The failure of the pilot of the other airplane to maintain adequate clearance while performing an unexpected and unannounced abrupt maneuver, resulting in a midair collision between the two airplanes.
- [NTSB ANC11CA052](https://openairdocs.org/ntsb/ANC11CA052.md): Cessna 182H · Soldotna, AK · Accident · No injuries · Data collection · Final report · Jun 20, 2011 · N331AA · Substantial damage
  > The pilot's failure to maintain pitch control resulting in an aerodynamic stall.

## 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" = '270' 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/270/sequence?state=AK

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