NTSB investigations: Allison 250 SER 400HP, FL

7 cases on aircraft whose registry engine model is Allison 250 SER 400HP. 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

19772026

NTSB investigations: Allison 250 SER 400HP, FL per year, 1977–2026: 7 cases
1977	1
1978	1
1980	1
1998	1
2007	1
2009	1
2023	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."eventStateOrRegion" = 'FL' 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 ('03013', '03012')) 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\" = 'FL' 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 ('03013', '03012'))
  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" = 'FL' 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 ('03013', '03012'))
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 ERA23LA269Accident · No injuriesClass 4 · LimitedFinal reportBell 206B · Orlando, FLThe pilot’s improper landing flare during a practice autorotation, which resulted in a hard landing.Jun 5, 2023 · N27UK · Substantial damage NTSB ERA09CA249Accident · No injuriesData collectionFinal reportBell 206 · West Palm Beach, FLThe pilot’s failure to maintain aircraft control during taxi, which resulted in a dynamic rollover.Apr 17, 2009 · N25PM · Substantial damage NTSB MIA08CA040Accident · No injuriesData collectionFinal reportAgusta A109 · ST. Augustine, FLThe pilot's failure to maintain a visual lookout while taxiing.Dec 22, 2007 · N109SK · Substantial damage NTSB MIA98LA070Accident · No injuriesLimited investigationFinal reportBell 206B · Miami, FLThe pilot's improper use of flight controls (cyclic) while attempting a takeoff to a hover, which led to an on-ground loss of control (dynamic rollover).Feb 3, 1998 · N26EA · Substantial damage NTSB MIA80DA059Accident · 1 fatalClosedBell 206B · Malabar, FLMay 3, 1980 · N5004U · No damage NTSB MIA78FA109Accident · Serious injuriesClosedSikorsky S76A · W Palm Beach, FLJul 28, 1978 · N763SA · Substantial damage NTSB MIA77FKT69Accident · Minor injuriesClosedBell 206B · Ft Myers, FLAug 27, 1977 · N90324 · Substantial damage