# NTSB investigations, AK: Fuel contamination

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 ANC24FA102](https://openairdocs.org/ntsb/ANC24FA102.md): Cessna 206 · Chalkyitsik, AK · Accident · 1 fatal · Class 3 · Field · Final report · Sep 24, 2024 · N8255Q · Substantial damage
  > A loss of engine power due to water-contaminated fuel as a result of the pilot’s inadequate preflight inspection. Contributing to the accident was the operator’s failure to ensure replacement filters were available for use during refueling operations.
- [NTSB ANC23LA013](https://openairdocs.org/ntsb/ANC23LA013.md): Taylorcraft BL-65 · Wasilla, AK · Accident · No injuries · Class 3 · Limited · Final report · Jan 14, 2023 · N29886 · Substantial damage
  > The pilot's failure to remove all water from the fuel tank, which resulted in fuel contamination and a subsequent partial loss of engine power.
- [NTSB ANC20LA093](https://openairdocs.org/ntsb/ANC20LA093.md): Piper PA22 · Homer, AK · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 14, 2020 · N8875C · Substantial damage
  > The total loss of engine power during the initial climb due to fuel contamination. Contributing to the accident was the corrosion of the fuel tank filler necks, which resulted in water intrusion into the fuel tanks.
- [NTSB ANC19FA021](https://openairdocs.org/ntsb/ANC19FA021.md): Bradshaw / McCauley Giles G-202 · Wasilla, AK · Accident · 1 fatal · Class 2 · Field · Final report · May 30, 2019 · N202AK · Substantial damage
  > The pilot's failure to maintain control after the partial loss of engine power. Contributing to the accident was a contamination of the fuel system, which likely seized the electric fuel pump and restricted fuel flow to the engine.
- [NTSB ANC19LA006](https://openairdocs.org/ntsb/ANC19LA006.md): Cessna 172 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Nov 3, 2018 · N2809L · Substantial damage
  > The pilot's failure to maintain airplane control during the landing flare, which resulted in the wing striking the runway. Contributing to the accident was a partial loss of engine power, which resulted from fuel contamination.
- [NTSB ANC17CA044](https://openairdocs.org/ntsb/ANC17CA044.md): Brantly B2 · St. Michael, AK · Accident · No injuries · Data collection · Final report · Jun 25, 2017 · N5955X · Substantial damage
  > The pilot’s inadequate supervision of the refueling process, which resulted in a loss of engine power due to water contamination in the helicopter’s fuel system from the fuel drum and subsequent impact with terrain.
- [NTSB GAA16CA102](https://openairdocs.org/ntsb/GAA16CA102.md): Piper PA 18A · Girdwood, AK · Accident · No injuries · Data collection · Final report · Dec 21, 2015 · N2791P · Substantial damage
  > Fuel contamination resulting in the loss of engine power, a forced landing on a highway, and subsequent right wing impact with highway signage.
- [NTSB ANC14CA014](https://openairdocs.org/ntsb/ANC14CA014.md): Cessna 170 - B · Nome, AK · Accident · Minor injuries · Data collection · Final report · Jan 4, 2014 · N8177A · Substantial damage
  > The pilot's failure to adequately remove water-contaminated fuel during the preflight inspection, which resulted in a total loss of engine power.
- [NTSB ANC11CA005](https://openairdocs.org/ntsb/ANC11CA005.md): Piper PA-18-150 · Clear, AK · Accident · No injuries · Data collection · Final report · Dec 23, 2010 · N40283 · Substantial damage
  > The pilot's inadequate preflight inspection, which resulted in a loss of engine power due to water/ice in the fuel system.
- [NTSB ANC09CA091](https://openairdocs.org/ntsb/ANC09CA091.md): Helio H-295 · Koliganek, AK · Accident · No injuries · Data collection · Final report · Sep 2, 2009 · N6468V · Substantial damage
  > A loss of engine power during cruise flight due to water in the fuel, and the pilot's inadequate preflight inspection.

## 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" = '193' 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/193/sequence?state=AK

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