# NTSB investigations: Allison 250 SER 400HP, 2001

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 FTW01LA172](https://openairdocs.org/ntsb/FTW01LA172.md): Bell 206-L1 · Wc 173 · Accident · Serious injuries · Limited investigation · Final report · Aug 5, 2001 · N2755N · Substantial damage
  > the pilot's failure to maintain yaw control of the helicopter during approach.
- [NTSB IAD01FA089](https://openairdocs.org/ntsb/IAD01FA089.md): Bell 206B · Baltimore, MD · Accident · 2 fatal · Field investigation · Final report · Aug 1, 2001 · N89FB · Destroyed
  > The pilot's improper decision to maneuver in an environment conducive to a loss of tail rotor effectiveness, and his inadequate recovery from the resultant unanticipated right yaw.
- [NTSB LAX01LA243](https://openairdocs.org/ntsb/LAX01LA243.md): Bell 206B · San Francisco, CA · Accident · No injuries · Limited investigation · Final report · Jul 12, 2001 · N474SF · Substantial damage
  > The failure of the accessory gearbox 2 1/2 bearing in fatigue resulting in the complete loss of engine power and a subsequent forced landing. The pilot's failure to maintain directional control during the autorotational flare maneuver is also causal. The…
- [NTSB SEA01FA085](https://openairdocs.org/ntsb/SEA01FA085.md): MBB BO-105C · Medford, OR · Accident · No injuries · Field investigation · Final report · May 5, 2001 · N105RH · Destroyed
  > A leaking engine oil outlet line fitting in the #1 engine compartment, resulting in an oil fire in the engine compartment.
- [NTSB IAD01LA041](https://openairdocs.org/ntsb/IAD01LA041.md): Bell BH-206-B · Ringgold, VA · Accident · Minor injuries · Limited investigation · Final report · Apr 8, 2001 · N17HA · Substantial damage
  > pilot's failure to properly control the helicopter during a slope landing, which resulted in a dynamic rollover.

## 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 year(c."eventDate") = 2001
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03013', '03012'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03013&year=2001

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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.