NTSB investigations: Fairchild 6-440 series, CO

5 cases on aircraft whose registry engine model is Fairchild 6-440 series. 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: Fairchild 6-440 series, CO per year, 1964–2026: 5 cases
1964	1
2008	1
2009	1
2025	2

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" = 'CO' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('26003')) 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\" = 'CO' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('26003'))
  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" = 'CO' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('26003'))
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 CEN25LA333Accident · No injuriesClass 4 · LimitedFinal reportParks Fokker D-VII Replica · Englewood, COA malfunction of the tailwheel which resulted in a runway excursion and ground loop.Aug 22, 2025 · N18852 · Substantial damage NTSB CEN25LA245Accident · No injuriesClass 4 · LimitedFinal reportFairchild 24R · Greeley, COThe pilot’s inability to maintain directional control during landing due to excessive wear in the tailwheel steering assembly.Jul 9, 2025 · N81210 · Substantial damage NTSB CEN09CA505Accident · Serious injuriesData collectionFinal reportFairchild PT-19A · Colorado Springs, COThe pilot's failure to maintain adequate airspeed to avoid an aerodynamic stall during a high-density altitude takeoff.Aug 8, 2009 · N54804 · Substantial damage NTSB DEN08LA131Accident · Serious injuriesLimited investigationFinal reportFlynn Van Munk · Erie, COA loss of engine power due to carburetor icing. The reason for the loss of aircraft control was not determined.Aug 5, 2008 · N41832 · Substantial damage NTSB UNK64X1884Accident · No injuriesClosedFairchild 24R46 · Broomfield, COMay 22, 1964 · N81210 · Substantial damage