ASN Wikibase Occurrence # 214513
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| Date: | Friday 17 August 2018 |
| Time: | 10:50 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Western Helicopters Inc |
| Registration: | N105JL |
| MSN: | 900807D |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 11717 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Riverside Municipal Airport, CA -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Riverside Municipal Airport, CA (RAL/KRAL) |
| Riverside, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot receiving instruction was performing a full-touchdown, 180° autorotation when the instructor noted that the helicopter was going to be short of the intended landing zone and advanced the throttle to initiate a power recovery. The helicopter continued to descend and landed hard and rolled over, resulting in substantial damage. The instructor reported no mechanical malfunctions with the helicopter or engine that would have precluded normal operation. It is likely that the instructor's delayed response to the helicopter's excessive rate of descent resulted in the hard landing.
After egressing the helicopter, the instructor noted that the pilot receiving instruction had been ejected from the helicopter during the accident sequence. Examination of the restraint systems revealed that the cotter pins for the hook-end fitting that attached to the airframe seat belt fittings had not been installed. The centrifugal force generated by the rotation of the helicopter during the accident sequence was likely sufficient for the hook-end fitting, void of the cotter pin, to separate from the seat belt fitting, which then resulted in the student being ejected from the helicopter. As a result of the accident, the manufacturer issued a mandatory service bulletin requiring the installation of cotter pins in the seat belt assemblies.
Probable Cause: The instructor's delayed remedial action to an excessive descent rate during a simulated autorotation, which resulted in a hard landing.
Accident investigation:
 |
|
Sources:
NTSB WPR18LA226
https://fr.flightaware.com/resources/registration/N105JL
Location
Media:
More from scene of helicopter crash at Riverside Municipal Airport pic.twitter.com/vdzFG7c9b7
— Jeff Horseman (@JeffHorseman) 17 août 2018
USA, CA, 1 hospitalized after Hughes 369D helicopter crashes at Riverside airport.https://t.co/GCJDDeiQmW via @abc7 pic.twitter.com/p3RjXCSRw1
— Planes Of Legend (@PlanesOfLegend) 18 août 2018
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 17-Aug-2018 19:22 | Iceman 29 | Added |
| 17-Aug-2018 19:23 | Iceman 29 | Updated [Source, Embed code] |
| 17-Aug-2018 19:45 | Iceman 29 | Updated [Narrative] |
| 18-Aug-2018 06:57 | Aerossurance | Updated [Narrative] |
| 18-Aug-2018 07:10 | Iceman 29 | Updated [Embed code] |
| 08-Jul-2022 19:08 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Embed code, Narrative, Category, Accident report] |
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