Fatal NTSB investigations: Maule M-4-220C

9 cases on aircraft the registry lists as Maule M-4-220C. 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

19702026

Fatal NTSB investigations: Maule M-4-220C per year, 1970–2026: 9 cases
1970	1
1972	1
1973	1
1974	1
1975	1
1979	2
1982	1
2009	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."highestInjuryLevel" = 'Fatal' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('5460114')) 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.\"highestInjuryLevel\" = 'Fatal'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('5460114'))
  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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('5460114'))
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 WPR09FA176Accident · 1 fatalField investigationFinal reportMaule M-4-220C · Hungry Horse, MTThe pilot's improper decision to continue flight into an area of reduced visibility and snow showers during cruise flight, which resulted in the pilot's spatial disorientation and subsequent loss of aircraft control.Apr 1, 2009 · N2007U · Destroyed NTSB ANC82FA037Accident · 1 fatalField investigationFinal reportMaule M-4-220C · Homer, AKThe pilot departed Homer airport on a special VFR clearance after being advised numerous times that VFR flight was not recommended. Shortly after takeoff (8 minutes) the aircraft dove out of the clouds and crashed near the airport. The pilot was not…Apr 16, 1982 · N40343 · Destroyed NTSB MKC79FA028Accident · 1 fatalClosedMaule M-4 · Bowman, NDMay 3, 1979 · N2078U · Destroyed NTSB ANC79FA035Accident · 2 fatalClosedMaule M-4 · Eureka Lodge, AKJan 24, 1979 · N2076U · Substantial damage NTSB NYC76AN021Accident · 2 fatalClosedMaule ME4 · Hydetown, PAAug 9, 1975 · N51161 · Destroyed NTSB MKC75AK020Accident · 1 fatalClosedMaule M4-220 · Grand Marias, MNSep 12, 1974 · N40648 · Substantial damage NTSB MKC74AK022Accident · 2 fatalClosedMaule M4-220 · Independence, IANov 14, 1973 · N40320 · Destroyed NTSB ANC72AA043Accident · 2 fatalClosedMaule M4220C · Cordova, AKApr 25, 1972 · N2043U · Destroyed NTSB OAK71AP010Accident · 1 fatalClosedMaule M4-220 · San Ardo, CAAug 22, 1970 · N2002U · Destroyed