NTSB investigations: Pratt & Whitney R1340 series

55 cases on aircraft whose registry engine model is Pratt & Whitney R1340 series, where the first occurrence was “Loss of engine power(partial) - mech failure/malf”. 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, newest first

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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016') 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" = 352)) 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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016')
      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\" = 352))
  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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016')
    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" = 352))
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 MKC84LA213Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Gillette, ARDuring swath run engine ran rough and could not sustain acft in flight. The plt made a forced landing in a soft freshly plowed field. The acft nosed over during the landing. Inspection of the acft revealed that one magneto was missing teethfrom the drive gear…Jul 12, 1984 · N9785 · Substantial damage NTSB FTW84LA253Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Kinder, LAThe plt reported after the accident that he was dispensing fertilizer and had just flown through a heavy rain shower when the engine began to lose power. A forced landing was made in a flooded rice field and the acft nosed over. The pilot stated that he was…May 26, 1984 · N9693 · Substantial damage NTSB FTW84LA185Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Eunice, LAThe plt reported that the engine lost power on takeoff and return to the rwy was not possible, so he landed on the edge of a pond. A post accident investigaiton revealed a crack in the #7 cyl head between the spark plug holes. The engine had just gotten a…Apr 4, 1984 · N9936 · Substantial damage NTSB FTW83LA358Accident · No injuriesLimited investigationFinal reportRockwell S2R · Eudora, ARWhile dispensing fertilizer, oil suddenly covered the windshield & the eng began running at reduced power. The plt made an emergency landing in a water covered rice field where the wheels hit a levee & the acft nosed over. An exam revealed that the #1 exhaust…Aug 1, 1983 · N4903X · Substantial damage NTSB FTW82DA101Accident · No injuriesFinal reportSnow AT-301 · Spearman, TXWhen the aircraft lost power after spraying crops the pilot executed a forced landing in a field. During the landing the aircraft nosed over. Investigation revealed that an induction hose had failed and blocked the carburetor. A service letter relating to…Mar 22, 1982 · N2326S · Substantial damage