Mitsubishi MU2B N43866

Summary

On 30 December 2019 at about 21:45 local time, a Mitsubishi MU2B registered N43866 was involved in an accident near Big Piney, Wyoming, United States. 4 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

30 December 2019 at 21:45

Classification

Accident

Location

Big Piney, Wyoming, United States

Nearest airport

Miley Memorial Field (BPI)

Coordinates

42.5822, -110.1089

Aircraft

Mitsubishi MU2B

Registration

N43866

Category

Airplane

Year built

1980

Engines

2

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

North Platte → Big Piney

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR20LA054

Nobody was injured.

The failure of the right propeller position to correspond to the throttle change when moved to the beta position for reasons that could not be determined based on available evidence.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot reported that the approach and landing flare were normal; however, as he moved both throttles to the beta position, it appeared that the left propeller went into the beta position while the right one did not. This resulted in a course deviation and runway excursion to the left, which led to the separation of the right main landing gear and substantial damage to the right wing. The National Transportation Safety Board was unable to conduct a follow-up examination, as the airplane has been sold and a chain of custody had been compromised. As a direct result of the airplane not being able to be examined, the cause of the right propeller failure to correspond to the throttle movement to the beta position is undetermined.

Quoted verbatim from the NTSB record.