NTSB investigations: Wright R-1820 series

7 cases on aircraft whose registry engine model is Wright R-1820 series, where the first occurrence was “Airframe/component/system failure/malfunction”. 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

19842026

NTSB investigations: Wright R-1820 series per year, 1984–2026: 7 cases
1984	1
1985	1
1988	1
1989	1
1995	1
2003	1
2004	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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('67020') 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

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 ('67020')
      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"

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 ('67020')
    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

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 MIA04LA092Accident · 1 fatalLimited investigationFinal reportNorth American T-28B · Wesley Chapel, FLThe pilot's failure to verify security of the left engine cowling and its subsequent separation in-flight and collision with the vertical stabilizer resulting in the loss of aircraft control.Jun 3, 2004 · N261FM · Substantial damage NTSB LAX03FA162Accident · 2 fatalField investigationFinal reportNorth American T28C · Sherman Oaks, CAThe pilot's in-flight loss of control due to spatial disorientation. Factors in the accident were the distraction caused by the malfunctioning mode C altitude reporting system, and the location of the transponder control head, which necessitated repeated…May 24, 2003 · N537Z · Destroyed NTSB FTW95FA278Accident · 2 fatalField investigationFinal reportNorth American T-28B · Ramah, COThe aircrew allowed the airplane's design stress limits to be exceeded.Jul 9, 1995 · N28TP · Destroyed NTSB NYC90DNE01Accident · No injuriesFinal reportNorth American T-28B · New Braintree, MAThe failure of the nose gear, which failed to retract with the main landing gear after takeoff; the gear was observed to be misaligned, and collapsed during the aircraft's touchdown.Oct 28, 1989 · N504GH · Substantial damage NTSB MIA89LA057Accident · No injuriesLimited investigationFinal reportSikorsky S-58B · Kissimmee, FLThe plt stated that he was repositioning the acft for fuel, and during a practice autorotation attempt the engine hydro-mechanical clutch failed. It did not re-engage upon the application of power and the acft was landed hard.Dec 23, 1988 · N45726 · Substantial damage NTSB LAX85FJA06Accident · 1 fatalFinal reportEmroth Emair MA-1B · Pahala, HIWitnesses reported seeing pieces of wood and fabric coming off the acft during it's second swath run. At the end of the run, the acft climbed abruptly to clear trees after which it entered an uncontrolled descent to ground impact. The acft was destroyed by…Aug 26, 1985 · N1012Y · Destroyed NTSB FTW84LA136Accident · Serious injuriesLimited investigationFinal reportSikorsky S-58E · Morgan City, LAThe helicopter was hovering above trees at about 100 ft AGL when the tail rotor chip detector lgt flickered svrl times, then illuminated steadily. This was followed by a loud grinding noise from the tail area & the acft yawed to the right. The acft entered an…Feb 13, 1984 · N70709 · Substantial damage