NTSB investigations: Enstrom Helicopter 280C, 1977

7 cases on aircraft the registry lists as Enstrom Helicopter 280C. 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

19762026

NTSB investigations: Enstrom Helicopter 280C, 1977 per year, 1976–2026: 75 cases
1976	1
1977	7
1978	5
1979	2
1980	2
1981	4
1982	5
1983	8
1984	3
1985	1
1986	4
1987	1
1988	2
1989	1
1990	1
1991	1
1993	1
1994	1
1995	3
1996	2
1997	2
1998	1
1999	3
2000	1
2002	1
2003	1
2004	2
2005	1
2006	1
2009	1
2014	1
2018	1
2021	1
2024	2
2025	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 year(c."eventDate") = 1977 AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3300505')) 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 year(c.\"eventDate\") = 1977
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3300505'))
  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 year(c."eventDate") = 1977
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3300505'))
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 SEA78FYM03Accident · No injuriesClosedEnstrom 280C · Aloha, OROct 5, 1977 · N111EE · Substantial damage NTSB SEA77FTI15Accident · No injuriesClosedEnstrom 280C · Dillon, MTJul 7, 1977 · N594H · Substantial damage NTSB OAK77FVW30Accident · No injuriesClosedEnstrom 280C · Las Vegas, NVJun 30, 1977 · N579H · Substantial damage NTSB NYC77FA069Accident · No injuriesClosedEnstrom 280C · Prt Washingtn, NYJun 24, 1977 · N587H · Substantial damage NTSB SEA77FYM24Accident · Serious injuriesClosedEnstrom 280C · Beaverton, ORMar 29, 1977 · N110VE · Destroyed NTSB CHI77FA032Accident · Minor injuriesClosedEnstrom 280C · Valparaiso, INFeb 25, 1977 · N594H · Substantial damage NTSB MIA77FA035Accident · 1 fatalClosedEnstrom 280C · Ft.Meade, FLFeb 23, 1977 · N345RA · Destroyed