Final NTSB investigations: Rolls-Royce 250-C300/A1

22 cases on aircraft whose registry engine model is Rolls-Royce 250-C300/A1. 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

20132026
Final NTSB investigations: Rolls-Royce 250-C300/A1 per year, 2013–2026: 22 cases
20131
20142
20162
20181
20191
20202
20219
20251
20263

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 ('54232'))
  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 CEN26LA203Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Fort Worth, TXThe flight instructor’s delayed remedial action and the student pilot’s failure to maintain helicopter control during hover.May 27, 2026 · N5488H · Substantial damageNTSB CEN26LA153Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Arlington, TXThe pilot’s failure to maintain clearance from terrain during the hover taxi.Mar 27, 2026 · N4059A · Substantial damageNTSB CEN26LA119Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Graford, TXThe pilot’s failure to maintain sufficient rotor speed during a practice autorotation to soft terrain which resulted in a loss of control and roll over.Feb 19, 2026 · N940BH · Substantial damageNTSB WPR25LA199Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Tukwila, WAThe pilot’s failure to maintain yaw control during a takeoff to a hover in a gusting crosswind, which resulted in a loss of directional control and a subsequent hard landing.Jun 30, 2025 · N23UP · Substantial damageNTSB CEN22LA006Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Delta, MOThe pilot’s inadequate inflight planning and his failure to see and avoid a wire which resulted in contact with the wire and subsequent ground impact.Oct 5, 2021 · N266RK · Substantial damageNTSB CEN21LA421Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Reynoldsville, ILThe pilot’s failure to maintain clearance from the wire during low altitude operations in windy conditions.Sep 15, 2021 · N166LW · Substantial damageNTSB WPR21FA300Accident · 4 fatalClass 3 · FieldFinal reportRobinson Helicopter R66 · Colusa, CAThe pilot’s abrupt flight control input that led to mast bumping and a subsequent in-flight breakup.Aug 1, 2021 · N7000J · DestroyedNTSB CEN21LA348Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Merry, NEThe pilot’s failure to maintain clearance from a wire during a low-level aerial application flight.Jul 30, 2021 · N857TL · Substantial damageNTSB ERA21LA270Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Waxhaw, NCThe pilot’s failure to maintain clearance from powerlines during a low-level aerial application flight.Jun 27, 2021 · N7078V · Substantial damageNTSB ERA21LA171Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R66 · Palmyra, PAThe pilot’s improper judgment to attempt a flight while impaired by medications, which resulted in the helicopter’s abnormal ground contact, loss of control, and collision with terrain.Apr 3, 2021 · N577DD · Substantial damageNTSB CEN21LA154Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Duson, LAThe uncertified pilot’s failure to maintain control of the helicopter when encountering a wind gust while hovering to land.Mar 9, 2021 · N49XB · Substantial damageNTSB ANC21LA020Accident · 1 fatalClass 3 · LimitedFinal reportRobinson Helicopter R66 · Kodiak, AKAn impact with ocean waters for reasons that could not be determined based on the available information.Mar 3, 2021 · N1767 · DestroyedNTSB ERA21LA121Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Knoxville, TNThe pilot’s failure to maintain directional control of the helicopter, which resulted in rear portion of the right skid contacting the ground and a subsequent dynamic rollover.Jan 30, 2021 · N660TN · Substantial damageNTSB ERA20LA220Accident · 1 fatalClass 3 · LimitedFinal reportRobinson R66 · Pikeville, NCThe pilot’s failure to see and avoid a small diameter wire during low altitude agricultural spraying operations. Contributing to the accident was the pilot’s insufficient property survey.Jun 18, 2020 · N4QW · Substantial damageNTSB ERA20FA074Accident · 2 fatalClass 3 · FieldFinal reportRobinson R66 · Mechanicsburg, PAA severe left roll excursion after the onset of pitch and roll oscillations, which were not arrested by the pilot for undetermined reasons. This resulted in main rotor blade contact with the airframe and a subsequent inflight breakup of the helicopter.Jan 10, 2020 · N450MC · DestroyedNTSB CEN19LA123Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson R66 · St Jacob, ILThe pilot's in-flight collision with an unmarked wire during an aerial application flight; the wire lacked contrast with the surrounding environment.Apr 21, 2019 · N766WC · Substantial damageNTSB GAA18CA366Accident · No injuriesData collectionFinal reportRobinson R66 · Cordova, AKThe pilot’s selection of unsuitable terrain for landing, which resulted in impact with brush and a loss of helicopter control.Jun 19, 2018 · N7040P · Substantial damageNTSB GAA16CA290Accident · No injuriesData collectionFinal reportRobinson Helicopter R66 · Beaumont, TXThe non-pilot owner's decision to start the helicopter while awaiting the pilot's arrival, which resulted in a loss of yaw control and a rollover.Jun 7, 2016 · N38SL · Substantial damageNTSB WPR16LA075Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R66 · Torrance, CAA vibration of the helicopter, which resulted in an autorotation to soft terrain and subsequent impact of the tail boom with the main rotor. The reason for the vibration could not be determined because postaccident examination revealed no malfunctions or…Feb 23, 2016 · N266RH · Substantial damageNTSB ERA15CA079Accident · No injuriesData collectionFinal reportRobinson Helicopter R66 · Henniker, NHThe pilot's failure to maintain aircraft control while landing, which resulted in a collision with a snow bank. Contributing to the accident was ice that covered the landing surface.Dec 22, 2014 · N64HF · Substantial damageNTSB CEN15CA039Accident · No injuriesData collectionFinal reportRobinson Helicopter R66 · Baton Rouge, LAAn in-flight bird strike.Oct 29, 2014 · N67GA · Substantial damageNTSB ERA13FA336Accident · 5 fatalField investigationFinal reportRobinson R66 · Noxen, PAThe pilot's decision to continue VFR flight into night instrument meteorological conditions, which resulted in spatial disorientation and a loss of control.Jul 28, 2013 · N646AG · Destroyed