NTSB investigations: Dehavilland DHC-6 TWIN OTTER

64 cases on aircraft the registry lists as Dehavilland DHC-6 TWIN OTTER. 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, newest first

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 ('2802606')) 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 ('2802606'))
  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 ('2802606'))
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 DCA77AA006Accident · 3 fatalClosedDehavilland DHC-6 · Wildwood, NJDec 12, 1976 · N101AC · Destroyed NTSB NYC76IN125Incident · Minor injuriesClosedDehavilland DHC-6 · Franklin, PASep 13, 1976 · N915SA · No damage NTSB OAK74DJY08Accident · Serious injuriesClosedDehavilland DHC-6 · S.Phou Koun, LaosApr 28, 1974 · N389EX · Substantial damage NTSB OAK73DJY01Accident · 3 fatalClosedDehavilland DHC-6 · Tha Tam Blng, LaosJul 25, 1972 · N5662 · Destroyed NTSB DCA72AZ012Accident · 13 fatalClosedDehavilland DHC-6 · Appleton, WIJun 29, 1972 · N4043B · 2 aircraft · Destroyed NTSB NYC71AN117Accident · No injuriesClosedDehavilland DHC-6 · Flushing, NYJun 4, 1971 · N121PM · Minor damage NTSB CHI71AC031Accident · Serious injuriesClosedDehavilland DHC-6 · Lacrosse, WINov 9, 1970 · N956SM · Destroyed NTSB NYC70AN096Accident · No injuriesClosedDehavilland DHC-6 · Windsor Lock, CTMar 6, 1970 · N121PM · Substantial damage NTSB OAK70A0025Accident · No injuriesClosedDehavilland DHC-6 · Oakland, CAOct 1, 1969 · N66180 · Substantial damage NTSB ANC70A0021Accident · 2 fatalClosedDehavilland DHC-6 · Sagwon, AKSep 6, 1969 · N2711N · Destroyed NTSB NYC70A0010Accident · 3 fatalClosedDehavilland DHC-6 · Jamaica, NYJul 15, 1969 · N558MA · Destroyed NTSB NYC69I0081Incident · No injuriesClosedDehavilland DHC-6 · Red Bank, NJFeb 12, 1969 · N376MA · No damage NTSB LAX69A0026Accident · No injuriesClosedDehavilland DHC-6 · Avalon, CANov 12, 1968 · N64150 · Substantial damage NTSB NYC67I0103Incident · No injuriesClosedDehaviland DHC-6 · Farmingdale, NYJan 19, 1967 · N121PM · No damage