# NTSB investigations: Lycoming HI0-360 series: 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 DEN99LA084](https://openairdocs.org/ntsb/DEN99LA084.md): Enstrom 280C · Baggs, WY · Accident · No injuries · Limited investigation · Final report · May 22, 1999 · N535H · Substantial damage
  > The pilot not maintaining the main rotor's RPM. Factor's were the high density altitude, and the mountainous/hilly terrain.
- [NTSB LAX90LA121](https://openairdocs.org/ntsb/LAX90LA121.md): Enstrom F-28C · Canyon Lake, CA · Accident · No injuries · Limited investigation · Final report · Mar 18, 1990 · N554H · Substantial damage
  > The pilot to maintain proper rotor RPM during a practice autorotation. Contributing to the accident was the uneven terrain selected by the pilot to conduct practice touch maneuvers.

## 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 ('41553')
    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=41553&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.