# NTSB investigations: Pratt & Whitney JT8D-1, 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 MIA92IA020](https://openairdocs.org/ntsb/MIA92IA020.md): Boeing 727-31 · Gulf Of Mexico · Incident · No injuries · Incident investigation · Final report · Nov 2, 1991 · N839TW · Minor damage
  > The overfilling of the forward lavatory during servicing and the failure to replace the fill/rinse line cap after servicing by the ground service personnel which resulted in the lavatory venting fluid through the fill/rinse line during flight and the…
- [NTSB CHI91IA297](https://openairdocs.org/ntsb/CHI91IA297.md): Boeing 727-224 · Detroit, MI · Incident · No injuries · Incident investigation · Final report · Sep 20, 1991 · N88704 · Minor damage
  > Inadequate maintenance inspection of the main landing gear actuator assembly by company maintenance personnel. A factor in the incident is inadequate design of the landing gear actuator by the manufacturer.
- [NTSB CHI91IA144](https://openairdocs.org/ntsb/CHI91IA144.md): Boeing 727-223 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Apr 25, 1991 · N6815 · Minor damage
  > The failure of the ground crew to properly align the airplane in the gate alley during the push back from the gate.
- [NTSB CHI91IA058](https://openairdocs.org/ntsb/CHI91IA058.md): Boeing B727-223 · Des Moines, IA · Incident · Minor injuries · Incident investigation · Final report · Jan 4, 1991 · N6821 · No damage
  > An oil leak originating from the auxiliary power unit which created smoke in the passenger cabin after it passed through the air conditioning/heating system equipment and associated duct work.

## 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 ('52044'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52044&year=1991

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