# NTSB investigations: Allison 250-C20 series, 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 LAX91LA058](https://openairdocs.org/ntsb/LAX91LA058.md): Mcdonnell Douglas 369D · Keanae, HI · Accident · Minor injuries · Limited investigation · Final report · Dec 18, 1990 · N58240 · Substantial damage
  > Fuel starvation caused by a loose fuel line 'b' nut, due to improper maintenance; and the failure of the pilot to correctly judge the landing flare during the autorotation.
- [NTSB LAX91LA054](https://openairdocs.org/ntsb/LAX91LA054.md): Mcdonnell Douglas 369D · Haleakla Nat Pk, HI · Accident · 1 fatal · Limited investigation · Final report · Dec 9, 1990 · N1113L · Substantial damage
  > Fuel starvation due to the unporting of the fuel supply pick-up.
- [NTSB LAX91TL#01](https://openairdocs.org/ntsb/LAX91TL%2301.md): McDonnell Douglas 369E · Los Alamitos, CA · Accident · No injuries · Class 3 · Final report · Nov 6, 1990 · N241JH · Substantial damage
- [NTSB LAX90LA298](https://openairdocs.org/ntsb/LAX90LA298.md): Bell 206B · California City, CA · Accident · No injuries · Limited investigation · Final report · Aug 22, 1990 · N250CA · 2 aircraft · Substantial damage
  > The failure of the helicopter pilot to maintain adequate clearance from the jump aircraft. A factor in the accident was the inability of the jump aircraft pilot to maintain visual contact with the helicopter.
- [NTSB NYC90LA187](https://openairdocs.org/ntsb/NYC90LA187.md): Bell 206B · Fitchburg, MA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1990 · N750LT · Substantial damage
  > The pilot's failure to assure that adequate fuel was on board for the flight.
- [NTSB LAX90T#A08](https://openairdocs.org/ntsb/LAX90T%23A08.md): Bell 206B · San Carlos, AZ · Accident · No injuries · Class 3 · Final report · Jul 10, 1990 · N5006Y · Substantial damage

## 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 ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&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.