# Final NTSB investigations: Pratt & Whitney W-S1H&S3H

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 CHI07CA142](https://openairdocs.org/ntsb/CHI07CA142.md): Canadian Car & Foundry Harvard MK IV · Peachtree City, GA · Accident · No injuries · Data collection · Final report · May 10, 2007 · N7757 · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll, resulting in a ground loop and subsequent left main gear collapse.
- [NTSB DCA06MA010](https://openairdocs.org/ntsb/DCA06MA010.md): Grumman G-73T · Miami, FL · Accident · 20 fatal · Class 1 · Major · Final report · Dec 19, 2005 · N2969 · Destroyed
  > The in-flight failure and separation of the right wing during normal flight, which resulted from (1) the failure of the Chalk's Ocean Airways maintenance program to identify and properly repair fatigue cracks in the right wing and (2) the failure of the…
- [NTSB NYC04CA143](https://openairdocs.org/ntsb/NYC04CA143.md): Stearman 4E · Loganton, PA · Accident · No injuries · Data collection · Final report · Jun 18, 2004 · N785H · Substantial damage
  > The pilot's failure to maintain aircraft control during the landing roll, which resulted in a nose over. A factor was uneven terrain.
- [NTSB SEA95LA091](https://openairdocs.org/ntsb/SEA95LA091.md): North American SNJ-4 · Prospect, OR · Accident · No injuries · Limited investigation · Final report · Apr 4, 1995 · N2269N · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during landing. Contributing to the accident was wet grass.
- [NTSB ANC92LA109](https://openairdocs.org/ntsb/ANC92LA109.md): De Havilland DHC-3 · Mcgrath, AK · Accident · No injuries · Limited investigation · Final report · Jul 22, 1992 · N41755 · Substantial damage
  > The fire in the engine accessory drive assembly. Factor was the rough an uneven forced landing area.
- [NTSB ANC89IA099](https://openairdocs.org/ntsb/ANC89IA099.md): De Havilland DHC-3 · Palmer, AK · Incident · No injuries · Incident investigation · Final report · Jun 20, 1989 · N41755 · No damage
  > Inadequate lubrication which resulted in the failure of the horizontal stabilizer's trim actuator.
- [NTSB MIA84IA147](https://openairdocs.org/ntsb/MIA84IA147.md): Grumman G-73T · Ft. Lauderdale, FL · Incident · No injuries · Incident investigation · Final report · Apr 17, 1984 · N2969 · Minor damage
  > After 2 unsuccessful attempts to 'ramp' the acft, plt took off again and flew to Ft. Lauderdale. Fly-by disclosed no nose landing wheel was present. Plt made landing on hard surface rwy. Metallurgical examination disclosed, nose gear strut assembly failed due…
- [NTSB MIA84IA077](https://openairdocs.org/ntsb/MIA84IA077.md): Grumman G-73 · West Palm Beach, FL · Incident · No injuries · Incident investigation · Final report · Feb 10, 1984 · N2969 · No damage
  > The acft experienced an elevator trim loss, encountered extreme 'shaking and vibration' of control column and tail section fluttering while on descent to Palm Beach int'l arpt. Investigation revealed that the end of the actuator shaft failed at a rivet hole…
- [NTSB ANC82FA081](https://openairdocs.org/ntsb/ANC82FA081.md): de Havilland DHC-3 · Near Skwentna, AK · Accident · No injuries · Field investigation · Final report · Sep 1, 1982 · N41755 · Substantial damage
  > The acft experienced a power loss & a forced landing was made on a sandbar. During the landing roll the acft struck a log, folding the main gear. Eng teardown revealed a failed no.4 articulating rod. The rod separated just above the knuckle pin area.
- [NTSB FTW81DPJ31](https://openairdocs.org/ntsb/FTW81DPJ31-124884.md): N Amer Avn AT-6 · Chickasha, OK · Accident · No injuries · Closed · Jun 27, 1981 · N9790Z · Substantial damage
- [NTSB ANC66A0024](https://openairdocs.org/ntsb/ANC66A0024.md): Grumman G-73 · Bethel, AK · Accident · No injuries · Closed · Dec 20, 1965 · N1208 · Substantial damage
- [NTSB ANC65I0030](https://openairdocs.org/ntsb/ANC65I0030.md): Grumman G-73 · Bethel, AK · Incident · No injuries · Closed · Dec 4, 1964 · N1208 · Minor damage
- [NTSB UNK64X0993](https://openairdocs.org/ntsb/UNK64X0993.md): Grumman G73 · West Palm Bc, FL · Accident · No injuries · Closed · Mar 20, 1964 · N2954 · Substantial damage
- [NTSB UNK64X0992](https://openairdocs.org/ntsb/UNK64X0992.md): Grumman G73 · W Palm Beach, FL · Accident · No injuries · Closed · Mar 20, 1964 · N2954 · Substantial damage

## 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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52012'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52012&status=final

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