# NTSB investigations: Allison 250 SER 400HP: Hard landing

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 CHI03LA062](https://openairdocs.org/ntsb/CHI03LA062.md): Bell 206L-1 · West Plains, MO · Accident · No injuries · Limited investigation · Final report · Jan 31, 2003 · N27AE · Substantial damage
  > The excessive descent rate that required an abrupt flare, resulting in the main rotor severing the tailboom.
- [NTSB SEA02LA172](https://openairdocs.org/ntsb/SEA02LA172.md): Hughes 500 · Carnation, WA · Accident · No injuries · Limited investigation · Final report · Sep 10, 2002 · N9263F · Substantial damage
  > The pilot's delayed power application during a practice power recovery autorotation.
- [NTSB ANC98TA011](https://openairdocs.org/ntsb/ANC98TA011.md): Bell 206B · Anchorage, AK · Accident · No injuries · Final report · Dec 5, 1997 · N83146 · Substantial damage
  > The pilot's failure to maintain adequate rotor RPM during an autorotation landing.
- [NTSB SEA96LA205](https://openairdocs.org/ntsb/SEA96LA205.md): Bell 206B · Greybull, WY · Accident · No injuries · Limited investigation · Final report · Aug 23, 1996 · N206FT · Substantial damage
  > the pilot's misjudged recovery (remedial action) from a simulated autorotation demonstration.
- [NTSB FTW89LA150](https://openairdocs.org/ntsb/FTW89LA150.md): Bell 206B · Oak Grove, LA · Accident · No injuries · Limited investigation · Final report · Aug 19, 1989 · N5006N · Substantial damage
  > Pilot's improper emergency procedures and flare that led to a hard landing and roll over. Factors in the accident were the pilot's decision to initiate an autorotation following an undetermined event and failure to maintain directional control during the…
- [NTSB MKC83LA149](https://openairdocs.org/ntsb/MKC83LA149.md): Hughes 369HS · Springfield, MO · Accident · No injuries · Limited investigation · Final report · Jul 9, 1983 · N500PA · Substantial damage
  > The plt reported that he had made a practice autorotation with a full power recovery & was landing when the accident occurred. He said the helicopter touched down hard, tail 1st, and rocked forward. The helicopter remained upright, but the main rotors struck…

## 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 ('03013', '03012')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 200))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03013&occurrence=200

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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.