# NTSB investigations: Lycoming ALF-502 SER. series

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 ENG24LA012](https://openairdocs.org/ntsb/ENG24LA012.md): British Aerospace BAE 146 Series 200A · Missoula, MT · Incident · Class 3 · Limited · Final report · Mar 1, 2024 · N474NA · 2 aircraft · Minor damage
  > The use of a new long term fire retardant with a chemical composition incompatible with the retardant previously in use for the integration-operational field evaluation without adequate testing and qualification.
- [NTSB ERA19WA203](https://openairdocs.org/ntsb/ERA19WA203.md): Canadair CL600 1A11 · Rio de Janeiro, Brazil · Incident · No injuries · Foreign investigation · Apr 18, 2019 · N100QR · No damage
  > The government of Brazil has notified the NTSB of an incident involving a Canadair CL600 1A11 airplane that occurred on April 18, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of Brazil's investigation under the…
- [NTSB CHI00IA037](https://openairdocs.org/ntsb/CHI00IA037.md): British Aerospace BAE 146-200A · Chicago, IL · Incident · Minor injuries · Incident investigation · Final report · Dec 1, 1999 · N606AW · Minor damage
  > An undetermined failure in the hydraulic system, which resulted in the airplane's entire braking system becoming temporarily inoperative. A factor associated with the incident was the airport terminal building that was contacted by the airplane.
- [NTSB MIA99FA226](https://openairdocs.org/ntsb/MIA99FA226.md): Canadair CL-600 · Fort Lauderdale, FL · Accident · No injuries · Field investigation · Final report · Aug 17, 1999 · N63HJ · Substantial damage
  > The failure of the flight crew to main directional control of the airplane after landing, resulting in the airplane going off the side of the runway and colliding with a taxiway sign, collapsing the nose landing gear, and causing substantial damage to the…
- [NTSB FTW97LA070](https://openairdocs.org/ntsb/FTW97LA070.md): British Aerospace BAE 146-200A · Denver, CO · Accident · Serious injuries · Limited investigation · Final report · Dec 21, 1996 · N606AW · No damage
  > an inflight encounter with unreported and unanticipated clear air turbulence during landing descent.
- [NTSB CHI95IA079](https://openairdocs.org/ntsb/CHI95IA079.md): British Aerospace BAE-146-300 · Madison, WI · Incident · No injuries · Incident investigation · Final report · Jan 27, 1995 · N611AW · No damage
  > A fuel leak in the no. 2 engine left fuel manifold segment due to a design defect which led to a fatigue crack.
- [NTSB CHI94IA134](https://openairdocs.org/ntsb/CHI94IA134.md): British Aerospace BAE-146-200 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Apr 17, 1994 · N609AW · No damage
  > a loose fuel nozzle.
- [NTSB CHI93IA312](https://openairdocs.org/ntsb/CHI93IA312.md): British Aerospace 146-300A · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jul 21, 1993 · N611AW · Minor damage
  > was a crack in the fuel system fuel flow distribution manifold which resulted from an inadequate design by the manufacturer.
- [NTSB DEN91IA026](https://openairdocs.org/ntsb/DEN91IA026.md): British Aerospace BAE 146-200 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Dec 15, 1990 · N609AW · Minor damage
  > The catastrophic failure of the no.12 blade on the 4th stage turbine wheel, and failure of company maintenance personnel to identify the preexisting crack during maintenance inspection.

## 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 ('41580'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41580

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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.