NTSB investigations: Allison 250 SER 250HP, 1983

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

19672026
NTSB investigations: Allison 250 SER 250HP, 1983 per year, 1967–2026: 267 cases
19671
19683
19694
19709
19713
19729
19736
19742
19754
19761
19775
19782
19795
19808
198113
19829
19839
198410
19854
19865
19878
19886
19895
199010
19911
19936
19946
19951
19965
19973
19986
19998
20004
20013
20026
20036
20045
20054
20066
20073
20085
20091
20103
20113
20125
20134
20143
20151
20164
20172
20191
20204
20214
20222
20231
20244
20254
20262

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 year(c.\"eventDate\") = 1983
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
  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 DEN84FA038Accident · Serious injuriesField investigationFinal reportBell 206B · Ft. Morgan, COThe helicopter was owned & operated by a tv station & was being used for transportation to a news event. While en route, clouds & reduced visibility due to fog were encountered. The plt elected to land in a field covered with powdered snow. During the…Dec 3, 1983 · N1078V · Substantial damageNTSB FTW84LA081Accident · Minor injuriesLimited investigationFinal reportBell 206L-1 · Ardmore, OKThe plt stated that before he took off from Oklahoma city, OK, he called the Oklahoma city fss & obtained a wx briefing. The briefing called for light rain showers, minimum ceiling of 1800 ft, visibility of 3 to 5 miles & no chance of fog, except in low lying…Dec 2, 1983 · N2005A · Substantial damageNTSB NYC84FA009Accident · 1 fatalField investigationFinal reportBell 206B III · Hudson, NHThe plt was on a flt to pick up film for a tv station. While en route, he made a mayday call to the manchester control tower. According to witnesses, the acft was proceeding in a northerly direction at about 700 to 1000 ft AGL when they heard a 'muffled pop.'…Oct 18, 1983 · N5011N · DestroyedNTSB SEA83LA205Accident · Minor injuriesLimited investigationFinal reportHughes 369B · Cougar, WAThe aircraft collided with trees and terrain during a forced landing attempt following an in-flight power loss. Subsequent engine teardown revealed failure of several components.Sep 26, 1983 · N10966 · DestroyedNTSB DEN83LA200Accident · Serious injuriesLimited investigationFinal reportBell 206L-1 · Tucker, UTThe helicopter was being used on a seismic data acquistion operation. While landing by a road in mountainous terrain at an elevation of aprx 8400 ft, the helicopter was observed to approach to a hover over the roadway. A considerable amount of dust was blown…Aug 26, 1983 · N3900B · Substantial damageNTSB ANC83LA138Accident · No injuriesLimited investigationFinal reportHughes 369D · Mcgrath, AKThe plt stated that he was flying straight & level at aprx 700 ft AGL, when the eng-out light illuminated. He began an autorotation to a ridgeline. During the landing, the main rotor blades contacted the tail boom & severed it from the main fuselage. An…Aug 5, 1983 · N1106Z · Substantial damageNTSB FTW83LA132Accident · Serious injuriesLimited investigationFinal reportBell 206L-1 · Shipshoal 295Reportedly, the winds were variable a 2 to 4 KTS as the plt began his approach to an off-shore oil rig. He stated that he chose to terminate the landing from a 4 ft hover. At aprx 15 ft above & 5 ft short of the helipad, the helicopter began to drop at an…Mar 1, 1983 · N1076S · Substantial damageNTSB ANC83FA032Accident · 1 fatalField investigationFinal reportBell 206B · Cordova, AKThe helicopter was on a rescue/recovery flt for the Alaska state troopers with the plt & a state trooper on board. They departed in variable wx conditions to rescue the plt of another acft. Reportedly, snow was falling in the search area & the winds were…Jan 13, 1983 · N74PR · DestroyedNTSB SEA83FA040Accident · No injuriesField investigationFinal reportBell 206B · Newport, ORThe helicopter was lifting off when the left skid stuck in the dirt. The acft did a dynamic rollover when the left skid remained stuck as the pilot attempted to takeoff. The pilot had just on-loaded two passengers both on the left side. Weather was not a…Jan 12, 1983 · N644PH · Substantial damage