# NTSB investigations: Allison 250 SER 250HP, 1990

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 FTW91LA023](https://openairdocs.org/ntsb/FTW91LA023.md): Bell 206L-1 · W.Cameron 266 · Accident · No injuries · Limited investigation · Final report · Dec 9, 1990 · N5753B · Destroyed
  > Failure of the helicopter's aft landing gear crosstube assembly due to fatigue.
- [NTSB SEA91LA023](https://openairdocs.org/ntsb/SEA91LA023.md): Hughes 369D · Mulina, OR · Accident · No injuries · Limited investigation · Final report · Nov 26, 1990 · N1106Z · Substantial damage
  > In-flight collision with a rebounding long-line, which caused main-rotor RPM decay and tail-boom separation, compromising the pilot's ability to successfully accomplish an attempted autorotation.
- [NTSB ANC91FA001](https://openairdocs.org/ntsb/ANC91FA001.md): Hughes 500D · Kennsington, AK · Accident · Serious injuries · Field investigation · Final report · Oct 4, 1990 · N1107G · Substantial damage
  > The loss of control during takeoff due to dynamic rollover. Contributing to the accident was the pilot-in-command's selection of an uneven landing area.
- [NTSB LAX90FA268](https://openairdocs.org/ntsb/LAX90FA268.md): Bell 206B · Quincy, CA · Accident · No injuries · Field investigation · Final report · Jul 25, 1990 · N2292W · Substantial damage
  > An unidentified contaminate lodged in the fuel governor.
- [NTSB LAX90FA230](https://openairdocs.org/ntsb/LAX90FA230.md): Hughes 369D · Hanapepe, HI · Accident · No injuries · Field investigation · Final report · Jun 23, 1990 · N8605F · 2 aircraft · Substantial damage
  > Failure of pilot of the photographing helicopter to maintain clearance and avoid collision.
- [NTSB FTW90LA096](https://openairdocs.org/ntsb/FTW90LA096.md): Bell 206L-1 · E. Island Blk15 · Accident · Serious injuries · Limited investigation · Final report · Apr 17, 1990 · N1071A · No damage
  > The loss of continuity in the compressor section of the engine due to a fatique failure of the spur adapter gear shaft.
- [NTSB FTW90LA083](https://openairdocs.org/ntsb/FTW90LA083.md): Bell 206B · Pearland, TX · Accident · Serious injuries · Limited investigation · Final report · Mar 19, 1990 · N5016F · Substantial damage
  > Dynamic rollover resultant from improper takeoff techniques used by the rated pilot, and inadequate supervision by the company check pilot.
- [NTSB SEA90TL#01](https://openairdocs.org/ntsb/SEA90TL%2301.md): Bell 206 · Cougar, WA · Accident · No injuries · Class 3 · Final report · Mar 12, 1990 · N678KG · Substantial damage
- [NTSB NYC90LA072](https://openairdocs.org/ntsb/NYC90LA072.md): Bell 206B · Norwood, MA · Accident · Minor injuries · Limited investigation · Final report · Feb 22, 1990 · N41AA · Substantial damage
  > Improper planning/decision by the pilot. The turbulence was a related factor.
- [NTSB CHI90TL#03](https://openairdocs.org/ntsb/CHI90TL%2303.md): Bell 206B · Fort Thompson, SD · Accident · Serious injuries · Class 3 · Final report · Feb 12, 1990 · N620 · Destroyed

## 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") = 1990
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03002&year=1990

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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.