# NTSB investigations: Allison 250 SER 250HP, 1999

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 IAD00LA002](https://openairdocs.org/ntsb/IAD00LA002.md): Loral GZ-22 · Mogadore, OH · Accident · Minor injuries · Limited investigation · Final report · Oct 28, 1999 · N4A · Substantial damage
  > The failure of the flight control system manufacturer to meet design (hardness) specifications that resulted in stripped splines.
- [NTSB MIA00FA003](https://openairdocs.org/ntsb/MIA00FA003.md): Bell 206B · Centreville, AL · Accident · 2 fatal · Field investigation · Final report · Oct 5, 1999 · N1285S · Destroyed
  > The pilot's inadequate preflight inspection of the helicopter's fuel system resulting in an in-flight loss of engine power due to fuel exhaustion as a result of overboard porting of fuel when the airframe fuel filter was left in the 'drain and locked'…
- [NTSB CHI99LA298](https://openairdocs.org/ntsb/CHI99LA298.md): Bell 206L · Cape Girardeau, MO · Accident · No injuries · Limited investigation · Final report · Aug 10, 1999 · N810F · Substantial damage
  > The inadequate preflight planning/preparation by the pilot, in that the auxiliary power unit cord was not removed. The brick wall was a contributing factor.
- [NTSB SEA99LA092](https://openairdocs.org/ntsb/SEA99LA092.md): Hughes 369D · Shelton, WA · Accident · No injuries · Limited investigation · Final report · Jun 22, 1999 · N1089Y · Substantial damage
  > The pilot's failure to maintain rotor RPM during an autorotation.
- [NTSB NYC99FA140](https://openairdocs.org/ntsb/NYC99FA140.md): Sikorsky S-76A · Jackson, KY · Accident · 4 fatal · Field investigation · Final report · Jun 15, 1999 · N2743E · Destroyed
  > the failure of the PIC to adequately supervise the SIC, and maintain a positive climb. Factors were the fog and dark night.
- [NTSB MIA99LA107](https://openairdocs.org/ntsb/MIA99LA107.md): Fairchild Hiller FH-1100 · Opp, AL · Accident · No injuries · Limited investigation · Final report · Mar 16, 1999 · N547FH · Substantial damage
  > a loss of engine power due to the failure of the engine to transmission drive shaft flex coupling, resulting in an in-flight collision with a vehicle.
- [NTSB ANC99TA029](https://openairdocs.org/ntsb/ANC99TA029.md): Bell 206L-1 · Barrow, AK · Accident · Minor injuries · Final report · Feb 24, 1999 · N785SR · Substantial damage
  > The pilot's misjudged flare while landing. Factors associated with the accident were whiteout conditions, and the snow-covered terrain.
- [NTSB LAX99TA088](https://openairdocs.org/ntsb/LAX99TA088.md): McDonnell Douglas 369D · Las Vegas, NV · Accident · No injuries · Final report · Jan 31, 1999 · N58431 · Substantial damage
  > The pilot's failure to properly judge the landing flare maneuver during a practice autorotative landing resulting in a hard landing.

## 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") = 1999
  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=1999

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