ASN Wikibase Occurrence # 298001
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| Date: | Tuesday 29 May 2018 |
| Time: | 09:45 LT |
| Type: |  MD Helicopters MD530F (369FF) |
| Owner/operator: | Rogers Helicopters, Inc. |
| Registration: | N975BW |
| MSN: | 0103FF |
| Year of manufacture: | 1994 |
| Total airframe hrs: | 6650 hours |
| Engine model: | Rolls-Royce 250-C30 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Wikieup, Arizona -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Cargo |
| Departure airport: | Kingman Airport, AZ (IGM/KIGM) |
| Wikieup, AZ | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was performing external load operations in the helicopter when he felt a vibration during a left descending turn. The pilot increased the collective to arrest the rate of descent, but the vibration became more prominent. He subsequently performed a forced landing, during which the helicopter impacted the ground and a main rotor blade contacted and severed the tailboom. The pilot did not report any malfunctions with the engine nor any abnormal increase or decrease in main rotor rpm.
Postaccident examination revealed a fractured drive link and a fractured strap pack assembly. Examination of the fractured surfaces revealed signatures consistent with tensile overstress, most likely from the blade contacting the left inlet fairing after the helicopter impacted the ground. There was no other evidence of preimpact mechanical malfunctions or failures that would have precluded normal operation, and the reason for the vibration could not be determined based on the available information.
Probable Cause: A vibration of the helicopter for reasons that could not be determined based on the available information, which resulted in a forced landing and the main rotor contacting the tailboom.
Accident investigation:
 |
|
Sources:
NTSB WPR18LA152
History of this aircraft
Other occurrences involving this aircraft
| 22 August 2013 | N975BW | Rogers Helicopters Inc | 0 | nr Reese, Tuscola County, MI | |
sub |
| Collision with pole or wires | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 11:39 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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