Cessna 150 N50055

Summary

On 15 August 2021 at about 22:00 local time, a Cessna 150 registered N50055 was involved in an accident near Heavener, Oklahoma, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

15 August 2021 at 22:00

Classification

Accident

Location

Heavener, Oklahoma, United States

Coordinates

34.7767, -94.5156

Aircraft

Cessna 150

Registration

N50055

Category

Airplane

Year built

1968

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

McKinney → Morriltton

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN21LA408

1 person had minor injuries.

A total loss of engine power due to the failure of the No. 2 cylinder exhaust valve for reasons that could not be determined.

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

Read the full NTSB narrative

While in cruise flight, the airplane’s engine began to run rough. As the pilot was attempting to restore engine power, the engine experienced a total loss of engine power. The pilot performed a forced landing to a field and the airplane collided with terrain. A postaccident examination of the engine revealed that the No. 2 cylinder exhaust valve had failed, damaging the piston head and resulting in a loss of engine power. Machining of the fracture surfaces precluded determining the mode of failure. The engine was last overhauled about 32 years before the accident with just over 1,030 hours logged on the components. The engine manufacturer recommends an overhaul every 1,800 hours or 12 years.

Quoted verbatim from the NTSB record.