NTSB investigations: Robinson Helicopter R44
10 cases on aircraft the registry lists as Robinson Helicopter R44, where the sequence of events included Loss of engine power (partial). 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
| 2009 | 1 |
|---|---|
| 2010 | 1 |
| 2011 | 1 |
| 2014 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2026 | 1 |
Where
Open the mapLatest 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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640120')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s.\"tier2Number\" = '342' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"isDefiningEvent\")))
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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640120')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '342' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 CEN26LA259Accident · No injuriesClass 3 · LimitedPreliminary reportRobinson Helicopter R44 · Adair, IAOn July 18, 2026, about 1440 central daylight time, a Robinson Helicopter Company R44, N484AT, was substantially damaged when it was involved in an accident near Adair, Iowa. The pilot was not injured. The helicopter was operated as a Title 14 Code of Federal…NTSB WPR22LA363Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Cedar City, UTA partial loss of engine power due to a damaged cylinder intake valve and subsequent collision with terrain during an autorotation.NTSB CEN20LA286Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson R44 · Welsh, LAA partial loss of engine power while in flight due to corrosion of engine components, which resulted in a loss of control and a subsequent impact with terrain.NTSB ERA19LA273Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson R44 · Sardis, GAFatigue failure of the fasteners on the engine crankshaft, which resulted in a partial loss of engine power and a subsequent forced landing.NTSB CEN18LA158Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · East Troy, WIA partial loss of engine power for reasons that could not be determined based on the available information, which resulted in impact with terrain and dynamic rollover during the subsequent attempted landing.NTSB ERA17LA257Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 · Myrtle Beach, SCA loss of available power to the main rotor due to a fractured exhaust pushrod and housing, which allowed engine oil to coat the V-belts. Contributing to the accident was the pilot's decision to continue the tour and his failure to maintain adequate rotor rpm…NTSB CEN14WA491Accident · 2 fatalForeign investigationRobinson Helicopter R44 · Roeselare, BelgiumNTSB CEN11LA648Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 · Ocate, NMThe pilot’s failure to apply carburetor heat, which resulted in the formation of carburetor ice and a partial loss of engine power.NTSB WPR10LA420Accident · Serious injuriesLimited investigationFinal reportRobinson R44 · San Diego, CAThe pilot's failure to utilize carburetor heat during initial climb, which resulted in a loss of engine power due to carburetor icing.NTSB ERA10LA019Accident · Serious injuriesLimited investigationFinal reportRobinson R44 · La Belle, FLThe loss of main rotor rpm due to the failure of one or more of the drive belts for undetermined reasons.