NTSB investigations: Allison 250-C20 series, ID

5 cases on aircraft whose registry engine model is Allison 250-C20 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

19962026
NTSB investigations: Allison 250-C20 series, ID per year, 1996–2026: 5 cases
19961
19971
19991
20011
20031

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.\"eventStateOrRegion\" = 'ID' 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 ('03020'))
  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 SEA03FA169Accident · Serious injuriesField investigationFinal reportAerospatiale AS350D · Webb, IDAn over temperature condition within the gas generator turbine which led to first stage turbine blade fatigue as well as first stage blade track warping and consequent blade tip rub. The fatigue and blade tip rub ultimately led to blade separation and failure…Aug 13, 2003 · N57731 · Substantial damageNTSB SEA01LA082Accident · No injuriesLimited investigationFinal reportSchweizer 269D · Nampa, IDthe pilot's inadequate compensation for strong, gusty, shifting winds while hovering in ground effect. Factors include a sudden directional change and increase in velocity of the gusty wind conditions.May 3, 2001 · N2061D · Substantial damageNTSB SEA99FA037Accident · No injuriesField investigationFinal reportHiller UH-12E · Yellow Pine, IDAltitude deviation during aerial taxi for undetermined reasons.Feb 28, 1999 · N2239 · Substantial damageNTSB SEA98LA024Accident · No injuriesLimited investigationFinal reportBell 206L · Idaho Falls, IDloss of engine power for undetermined reason(s). A factor relating to the accident included a dirt berm/ridge in the field where the pilot executed the forced landing.Dec 16, 1997 · N206LT · Substantial damageNTSB SEA96LA165Accident · 1 fatalLimited investigationFinal reportBell 206B · Warren, IDthe pilot's improper remedial action after helicopter's right skid became snagged by a log that was used in the construction of a temporary landing site. Factors relating to the accident were: the pilot's selection of an unsuitable landing area, inadequate…Jul 24, 1996 · N750LT · Destroyed