# NTSB investigations: Dehav ENG GIPSY MAJOR: Loss of engine power (partial)

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 CEN22LA106](https://openairdocs.org/ntsb/CEN22LA106.md): Dehavilland Tiger Moth DH 82A · Lampasas, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 23, 2022 · N5300 · Substantial damage
  > The failure of a bolt in the engine valve system which resulted in malfunction of the engine exhaust valve system and a partial loss of engine power. The rough terrain encountered during the forced landing contributed to the outcome.
- [NTSB ERA16LA065](https://openairdocs.org/ntsb/ERA16LA065.md): Dehavilland Tiger Moth DH 82A · Modena, NY · Accident · No injuries · Class 3 · Limited · Final report · Dec 12, 2015 · N9410 · Substantial damage
  > A partial loss of engine power due to a stuck No. 1 cylinder exhaust valve.

## 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 ('20004')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '342'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/342/cases?engine=20004

---
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.