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

9 cases on aircraft whose registry engine model is Pratt & Whitney R-985 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19732026

NTSB investigations: Pratt & Whitney R-985 series, SD per year, 1973–2026: 9 cases
1973	1
1974	1
1981	1
1982	1
1984	2
1999	1
2003	1
2013	1

Where

Open the map

Latest cases

Query with 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

duckdb -csv -c "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"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

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

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

NTSB CEN13FA324Accident · 1 fatalField investigationFinal reportWeatherly 620B · Ludlow, SDThe 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.Jun 7, 2013 · N350WR · Substantial damage NTSB CHI03LA254Accident · No injuriesLimited investigationFinal reportWeatherly 620A · Doland, SDThe 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.Aug 10, 2003 · N4656M · Substantial damage NTSB CHI99LA214Accident · No injuriesLimited investigationFinal reportWeatherly 620B · Timber Lake, SDthe 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.Jul 6, 1999 · N350WR · Substantial damage NTSB DEN84LA235Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Chamerlain, SDThe 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…Jul 25, 1984 · N4593 · Substantial damage NTSB DEN84LA217Accident · No injuriesLimited investigationFinal reportWeatherly 201 · Watertown, SDThe 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…Jul 10, 1984 · N86686 · Destroyed NTSB DEN82DTK05Accident · No injuriesFinal reportGrumman G-164 · Murdo, SDDuring 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.Jun 1, 1982 · N10247 · Substantial damage NTSB DEN81FTK20Accident · Minor injuriesClosedGrumman G-164B · Platte, SDAug 12, 1981 · N6636K · Substantial damage NTSB MKC74AK049Accident · No injuriesClosedVolpar D18S · Tea, SDFeb 15, 1974 · N603LS · Substantial damage NTSB MKC74IK005Incident · No injuriesClosedBeech D18S · Mitchell, SDAug 10, 1973 · N80201 · Minor damage