Final NTSB investigations: Allison 250-B17 series

5 cases on aircraft whose registry engine model is Allison 250-B17 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.

Cases per year

19872026
Final NTSB investigations: Allison 250-B17 series per year, 1987–2026: 5 cases
19871
19891
19981
20122

Latest cases

Query with SQL
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.\"completionStatus\" = 'Completed'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03017', '03018'))
  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.

NTSB CEN12LA296Accident · Minor injuriesLimited investigationFinal reportMaule M-7-420AC · Hanover Township, MIA total loss of engine power for reasons that could not be determined during an exhaustive postaccident examination of the engine and its components.May 13, 2012 · N420RP · Substantial damageNTSB WPR12CA121Accident · No injuriesData collectionFinal reportSiai-Marchetti SF.260TP · Corona, CAThe pilot did not maintain runway alignment during landing in a gusting crosswind.Mar 2, 2012 · N350TP · Substantial damageNTSB ATL98GA127Accident · 1 fatalFinal reportGovernment Aircraft Fact N22S · Caribbean SeaThe failure of the pilot-in-command of the other aircraft (N6305U) to maintain physical clearance from N6302W. Contributing factors were the inadequate visual lookout of all four pilots involved.Sep 18, 1998 · N6305U · 2 aircraft · DestroyedNTSB ATL89MA070Accident · 2 fatalMajor investigationFinal reportSwearingen SX-300 · Wilmington, OHFatigue and resulting failure of the right wing's lower attachment fitting and inadequate quality control by the Swearingen SX-300 production/design personnel.Jan 9, 1989 · N6Y · DestroyedNTSB LAX87LA322Accident · No injuriesLimited investigationFinal reportGovernment Aircraft Fact Nomad 24A · Lanai, HIWhen the flt was aprx 15 mi west of Lanai on a cargo flt from honolulu to hilo, HI, the plt observed the fuel gauges oscillating erratically toward the low side. He diverted toward Lanai to refuel. However, when the flt was abt 9 mi westof Lanai, the left eng…Sep 2, 1987 · N37808 · Substantial damage