NTSB investigations: Robinson Helicopter R44 II, AK
27 cases on aircraft the registry lists as Robinson Helicopter R44 II. 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
| 2006 | 2 |
|---|---|
| 2009 | 1 |
| 2012 | 2 |
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
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.\"eventStateOrRegion\" = 'AK' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640122', '7640123'))
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."eventStateOrRegion" = 'AK' AND c."eventCountry" = 'USA'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640122', '7640123'))
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 ANC25LA099Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Petersville, AKThe pilot’s exceedance of the helicopter’s available power while landing in a remote confined area, which resulted in rotor droop and a hard landing.NTSB ANC25LA064Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe pilot’s diverted attention during takeoff in flat light conditions, which resulted in a loss of visual reference with terrain.NTSB ANC24LA079Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe pilot's failure to follow the operator’s procedure manual and attempted to land at a remote landing zone in high wind conditions. Contributing factor was the pilot’s decision to not conduct a fly over of the landing site to determine wind condition which…NTSB ANC24LA013Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Glacier View, AKA sudden stoppage of the tail rotor for unknown reasons, which resulted in the tortional overload failure of the tail rotor driveshaft.NTSB ANC23LA032Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Skwentna, AKThe pilot's failure to maintain adequate altitude/clearance from terrain while maneuvering in adverse weather conditions, which resulted in a dynamic rollover.NTSB WPR22LA299Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe pilot’s failure to maintain lateral control during an off-field landing, which resulted in loss of control and an impact with terrain.NTSB ANC22LA001Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe unmanned aircraft pilot’s failure to yield the right of way to the helicopter.NTSB ANC21LA080Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Pelican, AKThe pilot’s loss of control while landing on a remote helipad.NTSB ANC21LA079Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Pelican, AKThe pilot’s improper preflight planning to ensure adequate power to hover out-of-ground effect while conducting external load operations.NTSB ANC20CA068Accident · No injuriesClass 4 · Data collectionFinal reportRobinson R44 · Ketchikan, AKThe crew leader's decision to throw a chainsaw bar into the moving arc of the main rotor blade.NTSB ANC20CA023Accident · Minor injuriesClass 4 · Data collectionFinal reportRobinson R44 · Talkeetna, AKThe pilot's failure to maintain adequate clearance from snow covered terrain during an en route descent in flat light conditions, which resulted in controlled flight into terrain.NTSB GAA19CA531Accident · No injuriesData collectionFinal reportRobinson R44 · Nuiqsut, AKThe pilot's improper decision to land downwind from unsecured debris, which resulted in the helicopter’s main rotor disk ingesting foreign objects.NTSB GAA18CA534Accident · No injuriesData collectionFinal reportRobinson R44 · Girdwood, AKThe fisherman's fishing rod striking the helicopter’s rotating main rotor disk during loading.NTSB ANC18LA058Accident · No injuriesLimited investigationFinal reportRobinson R44 · Bettles, AKMaintenance personnel's application of insufficient preload on the attachment hardware for the idler gear shaft during engine overhaul, which resulted in the dismounting of the idler gear shaft assembly due to wear and deformation and the subsequent total…NTSB ANC18LA032Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 · Fairbanks, AKThe pilot's failure to maintain helicopter control while in a hovering turn, which resulted in a collision with obstacles.NTSB ANC17LA040Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Solomon, AKThe pilot's failure to maintain adequate altitude above water, and his loss of situational awareness, which resulted in an inadvertent descent and collision with water.NTSB ANC16CA051Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Homer, AKAn in-flight collision with a bird resulting in damage to a tail rotor blade, which required replacement.NTSB ANC16IA013Incident · No injuriesIncident investigationFinal reportRobinson Helicopter R44 II · Anchorage, AKThe overhaul facility's improper and excessive use of an approved lubricant during overhaul of the fuel injection servo, which resulted in a disruption of fuel flow and a total loss of engine power.NTSB ANC16LA010Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Valdez, AKThe overhaul facility’s improper and excessive use of an approved lubricant during overhaul of the fuel injection servo, which resulted in a disruption of fuel flow and a total loss of engine power.NTSB GAA16CA009Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Ketchikan, AKThe pilot's failure to maintain directional control during the engine start sequence, which resulted in the helicopter sliding on a steel deck and impacting a crane. Contributing to the accident was the absence of traction material on the helicopter…NTSB ANC14CA042Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Coldfoot, AKThe pilot's failure to maintain adequate main rotor rpm while maneuvering at a low altitude, which resulted in an emergency landing on uneven terrain.NTSB ANC14FA030Accident · 1 fatalField investigationFinal reportRobinson Helicopter R44 II · Chugiak, AKThe pilot's loss of control of the helicopter due to impairment or incapacitation from a sudden, acute cardiac event.NTSB ANC12CA082Accident · Minor injuriesData collectionFinal reportRobinson Helicopter R44 II · Wainwright, AKThe failure of ground personnel to ensure the helicopter was serviced with the proper fuel. Contributing to the accident was the pilot's failure to monitor the fueling process.NTSB ANC12CA018Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Beluga, AKGround personnel's movement of cargo in windy conditions, which allowed a previously secured cargo sack to blow into the main rotor blades.NTSB ANC09LA098Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Central, AKThe pilot’s failure to maintain control of the helicopter after an in-flight encounter with a downdraft while landing. Contributing to the accident was the pilot’s inadequate evaluation of wind conditions.NTSB ANC06LA064Accident · No injuriesLimited investigationFinal reportRobinson R44 · Skwentna, AKThe pilot's improper rigging of the external sling load, which allowed the suspended load/cargo cable to entangle and disable the tail rotor control, resulting in a loss of control during cruise and an in-flight collision with terrain.NTSB ANC06LA025Accident · No injuriesLimited investigationFinal reportRobinson R44 · Ilimana, AKThe pilot's continued flight into adverse weather conditions, and his spatial disorientation and loss of control during a subsequent landing attempt. Factors associated with the accident are flat light and whiteout conditions, fog, and snow-covered terrain.