NTSB investigations: Piper PA-23

7 cases on aircraft the registry lists as Piper PA-23, 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

19822026

NTSB investigations: Piper PA-23 per year, 1982–2026: 7 cases
1982	3
1984	1
1986	1
1989	1
1995	1

Where

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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.aircraft_model_code IN ('7102302') 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.aircraft_model_code IN ('7102302')
      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.aircraft_model_code IN ('7102302')
    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 FTW95LA383Accident · No injuriesLimited investigationFinal reportPiper PA-23 · Greeley, COThe pilot's improper in-flight planning/decision by inadvertently selecting a less suitable area for landing (than the runway). Factors relating to the accident were: a malfunction of the nose landing gear micro-switch, which resulted in a false indication…Sep 8, 1995 · N2291P · Substantial damage NTSB BFO90LA004Accident · Minor injuriesLimited investigationFinal reportPiper PA-23-150 · Wytheville, VAThe loss of propeller control which resulted in engine shutdown and subsequent forced landing on unsuitable terrain.Oct 29, 1989 · N2224P · Substantial damage NTSB CHI86FA137Accident · 1 fatalField investigationFinal reportPiper PA-23-150 · Warren, MIThe acft developed a small oil leak during a x-country flt. The plt reduced power to idle to conserve oil even though the oil pressure was still in the normal range. During the descent the acfts airspeed was not maintained and the acft contacted the ground in…May 4, 1986 · N1373P · Destroyed NTSB CHI84LA408Accident · No injuriesLimited investigationFinal reportPiper PA-23-150 · Defiance, OHDuring initial takeoff climb at alt of 300 ft AGL, 9 1/4 inches of rt engine prop blade separated. Forced landing was make in field during which time the rt wing contacted a tree. Metallurgical examination revealed progressive fatigue over 75% of the…Sep 30, 1984 · N1424P · Substantial damage NTSB ATL82DA115Accident · No injuriesFinal reportPiper PA-23 · Louisville, KYThe pilot stated that during level flight at 9000 ft, he noticed smoke coming from under the instrument panel, followed by a vibration for 15 to 20 seconds. He diverted and landed at Louisville, KY without further incident. An examination revealed that the…Apr 25, 1982 · N1227P · Substantial damage NTSB ATL82LA098Accident · No injuriesLimited investigationFinal reportPiper PA-23-170 · Tuscaloosa, ALDuring an instructional flight the right engine was shut down and the prop feathered after a vibration was felt. The flight continued to its intended destination. Witnesses stated that they observed the right prop rotating while on final approach, even though…Apr 9, 1982 · N3016P · Substantial damage NTSB FTW82FA111Accident · No injuriesField investigationFinal reportPiper PA-23-150 · Newark, TXThe plt reported a loud bang was heard and he observed the left eng cowl raised to a vertical position & the eng drooped downward. The excessive amount of drag caused the acft to be uncontrollable. The plt was able to gain control of the acft by feathering…Apr 7, 1982 · N1196P · Destroyed