NTSB investigations: Pratt & Whitney R-985 series, MT
19 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.
Cases per year
| 1964 | 1 |
|---|---|
| 1968 | 2 |
| 1974 | 1 |
| 1975 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1979 | 1 |
| 1980 | 1 |
| 1984 | 1 |
| 1985 | 1 |
| 1987 | 1 |
| 1993 | 1 |
| 1995 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2023 | 1 |
| 2025 | 1 |
Where
Open the mapLatest cases
Query with SQL
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\" = 'MT' 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" = 'MT' 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" DESCRun 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 WPR25LA165Accident · No injuriesClass 4 · LimitedFinal reportWeatherly 620B · Lewiston, MTThe pilot’s failure to maintain clearance from terrain while maneuvering at a low altitude.NTSB WPR23LA284Accident · No injuriesClass 4 · LimitedFinal reportBoeing A75N1 · Red Lodge, MTThe pilot’s loss of directional control during landing with wind gusts, which resulted in a ground loop and collision with a fence.NTSB GAA18CA372Accident · Minor injuriesData collectionFinal reportBeech D17 · Hamilton, MTThe pilot’s failure to maintain directional control during the landing roll and his subsequent inability to recover due to his foot being stuck.NTSB GAA17CA225Accident · No injuriesData collectionFinal reportWeatherly 620B · Lewistown, MTThe pilot’s failure to maintain altitude during low-altitude maneuvers in flat light conditions.NTSB SEA95LA119Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Helena, MTThe loss of engine power for undetermined reasons.NTSB SEA95FA043Accident · 1 fatalField investigationFinal reportBeech E18S · Butte, MTThe pilot's failure to follow the IFR procedure by not maintaining the proper altitude prior to the initial appraoch fix. Factors to the accident were dark night conditions and a low ceiling.NTSB SEA93LA112Accident · No injuriesLimited investigationFinal reportBoeing A75N1 · Hardin, MTThe pilot in command's failure to maintain directional control.NTSB DEN87MA168Accident · 10 fatalMajor investigationFinal reportBeech D18S · Lakeside, MTThe plt borrowed the acft to fly a musical group to kalispell for a pvt engagement at Lakeside, MT, which was aprx 15 mi south of the arpt. That evening, the group boarded the acft for the return flt. After takeoff, the acft was seen flying at low alt in the…NTSB DEN85LA221Accident · No injuriesLimited investigationFinal reportBeech E18S · Billings, MTThe plt stated that he encountered a 'wind draft' and the acft was struck by lightning. The rt eng mount failed and the rt eng was deflected downward. Plt was unable to maintain alt and executed a forced landing in an open field. Post crash exam of the welded…NTSB DEN84LA094Accident · No injuriesLimited investigationFinal reportWeatherly 201B · Townsend, MTThe acft engine lost power on the base leg when the plt retarded the throttle. The plt landed on the rwy, but the acft started to veer to the right. The plt said he applied the brakes which did not seem to operate. Later, he said he may have had his feet on…NTSB DEN80DTI12Accident · No injuriesClosedCallair B-1A · Valier, MTNTSB SEA79FTA13Accident · No injuriesClosedGrumman G-164B · Billings, MTNTSB SEA77FTA15Accident · No injuriesClosedBeech C-45H · Plentywood, MTNTSB SEA76DTI23Accident · No injuriesClosedGrumman G-164A · Chester, MTNTSB SEA76DTI07Accident · No injuriesClosedBoeing A75N1 · Chester, MTNTSB SEA75FTA05Accident · No injuriesClosedGrumman G-164 · Baker, MTNTSB SEA69F0035Accident · 1 fatalClosedBoeing A75 · Boyd, MTNTSB SEA69D0034Accident · No injuriesClosedBoeing A75N1 · Wilsall, MTNTSB UNK64X2500Accident · No injuriesClosedBeechcraft D18S · Hardin, MT