NTSB investigations: Bell 47G-4, TX

8 cases on aircraft the registry lists as Bell 47G-4. 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

19642026

NTSB investigations: Bell 47G-4, TX per year, 1964–2026: 8 cases
1964	1
1966	1
1969	1
1971	1
1979	2
1991	1
2003	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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1181030')) 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.\"eventStateOrRegion\" = 'TX' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1181030'))
  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" = 'TX' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1181030'))
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 FTW03CA146Accident · Minor injuriesData collectionFinal reportBell 47G-4 · Robinson, TXThe pilot's failure to maintain clearance with the ground while performing a quick stop maneuver which resulted in a dynamic rollover.May 12, 2003 · N4205D · Substantial damage NTSB FTW91LA064Accident · Minor injuriesLimited investigationFinal reportBell 47G4 · Corpus Christi, TXThe initial restricted movement and eventual locking of the cyclic control as a result of the failure of the lateral servo. A factor was the installation of the failed component by an unqualified person.Apr 27, 1991 · N1195W · Destroyed NTSB FTW79FRA34Accident · No injuriesClosedBell 47G-4 · Manvel, TXJun 29, 1979 · N1150W · Substantial damage NTSB FTW79DRA20Accident · No injuriesClosedBell 47-G4 · Alvin, TXApr 24, 1979 · N1150W · Minor damage NTSB FTW72FPD06Accident · No injuriesClosedBell 47G-4 · Grandview, TXAug 30, 1971 · N8520F · Destroyed NTSB FTW69A0073Accident · Serious injuriesClosedBell 47G-4 · Sabine, TXApr 14, 1969 · N1143W · Substantial damage NTSB FTW67A0003Accident · No injuriesClosedBell 47G-4 · Borger, TXJul 5, 1966 · N1128W · Substantial damage NTSB UNK64X3021Accident · No injuriesClosedBell 47G4 · Reagor Sprgs, TXJul 25, 1964 · N73289 · Substantial damage