# NTSB investigations: Allison 250-C30 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 ERA15LA280](https://openairdocs.org/ntsb/ERA15LA280.md): MD Helicopter 369FF · Vega Baja, PR · Accident · No injuries · Class 3 · Limited · Final report · Jul 24, 2015 · N5842Z · Substantial damage
  > A total loss of engine power due to insufficient lubrication to the engine's No. 2 bearing, which resulted in the failure of the bearing and a subsequent forced landing.
- [NTSB WPR15LA177](https://openairdocs.org/ntsb/WPR15LA177.md): Bell 206 L4 · Dewey, AZ · Accident · No injuries · Limited investigation · Final report · Jun 2, 2015 · N73AW · Substantial damage
  > A total loss of engine power due to the failure of the No. 2 bearing, which resulted from a fractured separator.
- [NTSB CEN14FA004](https://openairdocs.org/ntsb/CEN14FA004.md): Bell 206L 3 · Venice, LA · Accident · 1 fatal · Field investigation · Final report · Oct 9, 2013 · N54LP · Substantial damage
  > A total loss of engine power due to the liberation of a second stage turbine blade near the blade root due to a high-cycle fatigue crack and subsequent overload. Although extensive testing and materials analysis was performed, the reason for crack initiation…
- [NTSB CEN10LA036](https://openairdocs.org/ntsb/CEN10LA036.md): Bell 206 · High Island A-442A · Accident · Serious injuries · Limited investigation · Final report · Nov 1, 2009 · N272M · Substantial damage
  > A total loss of engine power due to maintenance personnel's failure to correctly torque the Pc line following removal and reinstallation of the turbine module.

## 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 ('03015')
    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=03015

---
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.