# NTSB investigations: Pratt & Whitney R-1830 series: Airframe/component/system failure/malfunction

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 MIA94LA003](https://openairdocs.org/ntsb/MIA94LA003.md): Douglas DC-3C · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Oct 7, 1993 · N781T · Substantial damage
  > Partial failure of a wing rib due to exfoliation corrosion and inadequate inspection of the aircraft by company maintenance personnel.
- [NTSB MIA93LA106](https://openairdocs.org/ntsb/MIA93LA106.md): Douglas DC-3C · Zephyrhills, FL · Accident · No injuries · Limited investigation · Final report · Apr 20, 1993 · N8056 · Substantial damage
  > The pilot-in-command's failure to maintain best single-engine rate-of-climb speed which resulted in a forced landing. A factor which contributed to the accident was a possible exhaust system clamp failure.
- [NTSB DEN91LA102](https://openairdocs.org/ntsb/DEN91LA102.md): Douglas DC-3C · Albuquerque, NM · Accident · No injuries · Limited investigation · Final report · Jul 20, 1991 · N96H · Substantial damage
  > The failure of the right main landing gear tire.
- [NTSB SEA89FA122](https://openairdocs.org/ntsb/SEA89FA122.md): Douglas DC-3C · Petersburg, AK · Accident · No injuries · Field investigation · Final report · Jun 26, 1989 · N8042X · Substantial damage
  > The pilot's improper decision to ditch the aircraft when it could have been flown back to the airport using the right seat controls. Contributing factor(s) was: the failure & separation of a portion of the right aileron fabric, and the pilot's excessive force…
- [NTSB MIA82DA178](https://openairdocs.org/ntsb/MIA82DA178.md): Douglas C-47 · Charlotte Amali · Accident · No injuries · Final report · Aug 23, 1982 · N87629 · Substantial damage
  > The pilot reported normal braking pressure failed while taxiing on the ramp. He attempted to steer clear of other aircraft, but collided with two parked DC-3 aircraft. No determination of the nature of the braking problem was made.

## 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 ('52020')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52020&occurrence=130

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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.