NTSB investigations: Grumman G-73

5 cases on aircraft the registry lists as Grumman G-73, 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: Grumman G-73 per year, 1984–2026: 5 cases
1984	2
1985	1
1986	1
2005	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.aircraft_model_code IN ('3951802') 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 ('3951802')
      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 ('3951802')
    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 DCA06MA010Accident · 20 fatalClass 1 · MajorFinal reportGrumman G-73T · Miami, FLThe in-flight failure and separation of the right wing during normal flight, which resulted from (1) the failure of the Chalk's Ocean Airways maintenance program to identify and properly repair fatigue cracks in the right wing and (2) the failure of the…Dec 19, 2005 · N2969 · Destroyed NTSB MIA87FA013Accident · 1 fatalField investigationFinal reportGrumman G-73 · St. CroixThe plts lost aileron control shortly after takeoff while in a left turn. The left turning tendencies of the acft could not be corrected and the acft crash landed in the carribean sea. Post crash inspection of the acft revealed the left aileron control cable…Oct 28, 1986 · N604SS · Substantial damage NTSB MIA85IA155Incident · Minor injuriesIncident investigationFinal reportGrumman G-73-T · St. CroixWhile on an FAA observed proving flight, water take off, the left propeller electrical terminal failed. The part then penetrated the left forward passenger window and struck the FAA observer causing minor injury. The plastic part failed in over load due to…Apr 24, 1985 · N632SS · Minor damage NTSB MIA84IA147Incident · No injuriesIncident investigationFinal reportGrumman G-73T · Ft. Lauderdale, FLAfter 2 unsuccessful attempts to 'ramp' the acft, plt took off again and flew to Ft. Lauderdale. Fly-by disclosed no nose landing wheel was present. Plt made landing on hard surface rwy. Metallurgical examination disclosed, nose gear strut assembly failed due…Apr 17, 1984 · N2969 · Minor damage NTSB MIA84IA077Incident · No injuriesIncident investigationFinal reportGrumman G-73 · West Palm Beach, FLThe acft experienced an elevator trim loss, encountered extreme 'shaking and vibration' of control column and tail section fluttering while on descent to Palm Beach int'l arpt. Investigation revealed that the end of the actuator shaft failed at a rivet hole…Feb 10, 1984 · N2969 · No damage