# NTSB investigations: Pratt & Whitney R-985 series, SD

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 CEN13FA324](https://openairdocs.org/ntsb/CEN13FA324.md): Weatherly 620B · Ludlow, SD · Accident · 1 fatal · Field investigation · Final report · Jun 7, 2013 · N350WR · Substantial damage
  > The pilot’s failure to maintain control of the airplane while maneuvering, which resulted in an inadvertent stall. Contributing to the accident was task- and/or work-related fatigue.
- [NTSB CHI03LA254](https://openairdocs.org/ntsb/CHI03LA254.md): Weatherly 620A · Doland, SD · Accident · No injuries · Limited investigation · Final report · Aug 10, 2003 · N4656M · Substantial damage
  > The pilot's failure to maintain clearance from the wires and directional control not being possible due to the failure of the brake system. Factors contributing to the accident were the wires, the trees, and the failure of the brake system.
- [NTSB CHI99LA214](https://openairdocs.org/ntsb/CHI99LA214.md): Weatherly 620B · Timber Lake, SD · Accident · No injuries · Limited investigation · Final report · Jul 6, 1999 · N350WR · Substantial damage
  > the pilots selection of the shorter runway and his failure to abort the takeoff. Factors to the accident were the high density altitude, the fence and the fence posts.
- [NTSB DEN84LA235](https://openairdocs.org/ntsb/DEN84LA235.md): Grumman G-164A · Chamerlain, SD · Accident · No injuries · Limited investigation · Final report · Jul 25, 1984 · N4593 · Substantial damage
  > The pilot experienced an engine failure and executed an emergency landing on a narrow road which resulted in one of the landing gear touching down on the soft shoulder. The landing gear failed and substantial damage resulted. Examination of the engine…
- [NTSB DEN84LA217](https://openairdocs.org/ntsb/DEN84LA217.md): Weatherly 201 · Watertown, SD · Accident · No injuries · Limited investigation · Final report · Jul 10, 1984 · N86686 · Destroyed
  > The spray boom of the acft caught in the green wheat along the right side of the dirt rwy during takeoff. The acft then ran off the prepared surface into the wheat. It then nosed over onto its back and caught fire. The dirt rwy is 30 ft wide. The wingspan of…
- [NTSB DEN82DTK05](https://openairdocs.org/ntsb/DEN82DTK05.md): Grumman G-164 · Murdo, SD · Accident · No injuries · Final report · Jun 1, 1982 · N10247 · Substantial damage
  > During a spraying operation the landing gear collided with a dirt bank. The pilot returned to the airport and during landing the right wing contacted the runway because of a missing right landing gear. The aircraft ground looped and nosed over.
- [NTSB DEN81FTK20](https://openairdocs.org/ntsb/DEN81FTK20.md): Grumman G-164B · Platte, SD · Accident · Minor injuries · Closed · Aug 12, 1981 · N6636K · Substantial damage
- [NTSB MKC74AK049](https://openairdocs.org/ntsb/MKC74AK049.md): Volpar D18S · Tea, SD · Accident · No injuries · Closed · Feb 15, 1974 · N603LS · Substantial damage
- [NTSB MKC74IK005](https://openairdocs.org/ntsb/MKC74IK005.md): Beech D18S · Mitchell, SD · Incident · No injuries · Closed · Aug 10, 1973 · N80201 · Minor 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."eventStateOrRegion" = 'SD' 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 ('52008'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52008&state=SD

---
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.