NTSB investigations: Enstrom F-28A

6 cases on aircraft the registry lists as Enstrom F-28A, where the first occurrence was “Loss of engine power”. 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

19832026

NTSB investigations: Enstrom F-28A per year, 1983–2026: 6 cases
1983	1
1993	2
1994	1
2001	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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3300406') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350)) 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 ('3300406')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 350))
  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 ('3300406')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350))
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 CHI02FA001Accident · 1 fatalField investigationFinal reportEnstrom F-28A · Attica, MIThe reported loss of engine power due to fuel exhaustion during cruise flight, the pilot not performing an autorotation, the pilot not maintaining rotor RPM during his emergency descent, and the pilot not maintaining control of the helicopter. A factor was…Oct 3, 2001 · N137E · Substantial damage NTSB CHI01LA178Accident · Serious injuriesLimited investigationFinal reportEnstrom F-28A · Eldridge, IAThe inadequate autorotation and disregarded wind information by the pilot. Factors were the gusting tailwind and the loss of engine power for undetermined reasons.Jun 19, 2001 · N612B · Substantial damage NTSB BFO94LA137Accident · No injuriesLimited investigationFinal reportEnstrom F-28A · Stewartsville, NJThe loss of engine power for undetermined reason.Aug 16, 1994 · N13CM · Substantial damage NTSB NYC93LA175Accident · No injuriesLimited investigationFinal reportEnstrom F28A · Meriden, CTThe loss of engine power for undetermined reasons.Aug 27, 1993 · N269Q · Substantial damage NTSB NYC93LA128Accident · No injuriesLimited investigationFinal reportEnstrom F-28A · Ironton, OHThe loss of engine power for undetermined reasons. The lack of suitable terrain for the forced landing was a factor.Jun 27, 1993 · N9555 · Substantial damage NTSB ATL83LA298Accident · No injuriesLimited investigationFinal reportEnstrom F-28A · Brunswick, GAThe plt reported that the helicopter was 'topped off' with fuel before takeoff. About 1 hr & 10 min after takeoff, there reportedly was a loud 'bang' which was followed by sputtering from the eng & a decay in the eng RPM. An autorotation was made into a small…Jul 30, 1983 · N9078 · Substantial damage