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ASN Wikibase Occurrence # 238584
Last updated: 30 November 2021
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Type:Silhouette image of generic MD60 model; specific model in this crash may look slightly different
MD Helicopters MD 600N
Owner/operator:MP Aviation LLC
Registration: N208MP
MSN: RN042
Fatalities:Fatalities: 0 / Occupants:
Other fatalities:0
Aircraft damage: Substantial
Location:Thompson Falls, Sanders County, MT -   United States of America
Phase: Landing
Nature:External load operation
Departure airport:
Destination airport:
Investigating agency: NTSB
On July 21, 2020, at 0558 Pacific daylight time, a McDonnell Douglas 600N helicopter, N208MP, was substantially damaged when it was involved in an accident near Thompson Falls, Montana. The pilot was not injured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 133 rotorcraft external load operation.
The pilot stated that, as he was on an approach to a landing zone, he lowered the collective to start a vertical descent to land. At that time, the engine and rotor rpm suddenly decreased, the helicopter yawed to the left and started to settle. As the helicopter was approaching the ground fast, the pilot increased the collective to use the remaining rpm to cushion the landing. The helicopter impacted the ground and the pilot rolled the throttle to idle, but noticed that engine speed and rpm were below the normal idle parameters. When he rolled the throttle to off, he heard a grinding, "metal-to-metal" noise.



Revision history:

25-Jul-2020 01:09 Captain Adam Added
03-Mar-2021 21:04 rudy Updated

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