# NTSB investigations: Pratt & Whitney JT9D series, CO

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 DCA84AA025](https://openairdocs.org/ntsb/DCA84AA025.md): Boeing 727-222 · Denver, CO · Accident · No injuries · Final report · May 31, 1984 · N7640U · Substantial damage
  > Before takeoff, the crew of N7647U (ua flt 663) noted cumulus clouds & virga in the area. At 1327, a Dehavilland dash 7 crew rprtd a 25 kt loss of airspeed, but svrl other acft then took off without rprtg a problem. Due to radio conjestion,the captain did not…
- [NTSB DEN84IA041](https://openairdocs.org/ntsb/DEN84IA041.md): Boeing 767 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Dec 9, 1983 · N613UA · No damage
  > On takeoff roll the no 3 wheel on the right main landing gear fell off the acft. The acft returned and landed without further incident. The wheel bearing was found faileddue to cosmoline contamination.

## 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."eventStateOrRegion" = 'CO' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52054'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52054&state=CO

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