# NTSB investigations: Pratt & Whitney Canada PT6A-60A, 1991

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 NYC92FA053](https://openairdocs.org/ntsb/NYC92FA053.md): Beech 1900C · Block Island, RI · Accident · 3 fatal · Class 1 · Field · Final report · Dec 29, 1991 · N811BE · Destroyed
  > The instructor pilot's loss of altitude awareness and possible spatial disorientation, which resulted in the loss of control of the airplane at an altitude too low for recovery; and company management's lack of involvement in and oversight of its Beechcraft…
- [NTSB ANC92FA006](https://openairdocs.org/ntsb/ANC92FA006.md): Beech BE-99 · Allakaket, AK · Accident · No injuries · Field investigation · Final report · Oct 19, 1991 · N299GL · Substantial damage
  > Was the pilot-in-command misjudged the proper touchdown point on the runway. Contributing to the accident was the snow-covered terrain and a snowbank.
- [NTSB DEN91LA131](https://openairdocs.org/ntsb/DEN91LA131.md): Piper PA-31T-620 · Santa Fe, NM · Accident · No injuries · Limited investigation · Final report · Sep 22, 1991 · N2FJ · Substantial damage
  > Inadvertent deactivation of aircraft brakes by unqualified person.
- [NTSB MIA91LA196](https://openairdocs.org/ntsb/MIA91LA196.md): Air Tractor AT-502 · Cleveland, MS · Accident · No injuries · Limited investigation · Final report · Aug 10, 1991 · N45192 · Substantial damage
  > The pilot's decision to continue the flight with reduced visual lookout due to a dirty foggy windshield.
- [NTSB DCA91MA042](https://openairdocs.org/ntsb/DCA91MA042.md): Beech C99 · Birmingham, AL · Accident · 13 fatal · Major investigation · Final report · Jul 10, 1991 · N7217L · Destroyed
  > The decision of the captain to initiate and continue an instrument approach into clearly identified thunderstorm activity, resulting in a loss of control of the airplane from which the flightcrew was unable to recover and subsequent collision with obstacles…
- [NTSB FTW91DPG05](https://openairdocs.org/ntsb/FTW91DPG05.md): Ayres S2R-T34 · Wheatley, AR · Accident · 1 fatal · Final report · May 2, 1991 · N4015Z · Minor damage
  > The failure of the flagman to follow established procedures.
- [NTSB NYC91LA068](https://openairdocs.org/ntsb/NYC91LA068.md): Beech 200 · Johnstown, PA · Accident · No injuries · Limited investigation · Final report · Jan 30, 1991 · N30SE · Substantial damage
  > The pilot's failure to maintain proper directional control of the airplane during landing, resulting in a collision with a snow bank and runway marker. A factor relating to the accident was the low visibility during landing.
- [NTSB CHI91LA067](https://openairdocs.org/ntsb/CHI91LA067.md): Beech 200 · Vichy, MO · Accident · No injuries · Limited investigation · Final report · Jan 12, 1991 · N200MR · Substantial damage
  > A restricted visual outlook and go-around was not performed by the pilot. Factors related to the accident were a dark night, fog and glare, ice covered runway and whiteout conditions.

## 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 year(c."eventDate") = 1991
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52043', '51999'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52043&year=1991

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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.