Friday, July 24, 2020

MD Helicopters MD 600N, N208MP: Accident occurred July 21, 2020 in Thompson Falls, Sanders County, Montana

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. 

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Helena, Montana

MP Aviation LLC

Location: Thompson Falls, MT
Accident Number: WPR20LA235
Date & Time: 07/21/2020, 0558 PDT
Registration: N208MP
Injuries: 1 None
Flight Conducted Under: Part 133: Rotorcraft Ext. Load

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. The helicopter was secured for further examination.

Aircraft and Owner/Operator Information

Registration: N208MP
Model/Series: 600 N
Aircraft Category: Helicopter
Amateur Built: No
Operator: On file
Operating Certificate(s) Held: Rotorcraft External Load (133)

Meteorological Information and Flight Plan

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Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude:

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