# NTSB investigations: Allison 250 series: Loss of engine power (total)

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 WPR24LA093](https://openairdocs.org/ntsb/WPR24LA093.md): Bell 47G-3B-1 · Garey, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 23, 2024 · N2618W · Substantial damage
  > Maintenance personnel’s failure to properly check the torque paint on a fuel control unit B-nut, which resulted in the loosening of the B-nut, a loss of engine power at a low altitude, and a subsequent impact with terrain.
- [NTSB CEN16LA335](https://openairdocs.org/ntsb/CEN16LA335.md): Cessna U206G · Cave-In-Rock, IL · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 2016 · N891LL · Substantial damage
  > A total loss of engine power due to air entering the fuel system for reasons that could not be determined based on available information. Contributing to the accident was the pilot’s inability to restart the engine due to the check valve assembly design.
- [NTSB ERA10LA383](https://openairdocs.org/ntsb/ERA10LA383.md): Hiller UH-12E · Holly Hill, SC · Accident · Serious injuries · Limited investigation · Final report · Jul 29, 2010 · N104HH · Substantial damage
  > Maintenance personnel's improper inspection and cleaning of the fuel nozzle, which resulted in a total loss of engine power.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03014', '03019')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '341'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/341/cases?engine=03014

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