Marlow BEARHAWK N22GM

Summary

On 27 March 2019 at about 20:30 local time, a Marlow BEARHAWK registered N22GM was involved in an accident near Sevierville, Tennessee, United States. One person was 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

27 March 2019 at 20:30

Classification

Accident

Location

Sevierville, Tennessee, United States

Coordinates

35.8336, -83.4944

Aircraft

Marlow BEARHAWK

Registration

N22GM

Category

Airplane

Year built

2018

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Jonesborough → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ERA19LA139

Nobody was injured.

Abnormal combustion in the No. 1 cylinder for reasons that could not be determined based on the available evidence, followed by the activation of the ignition system circuit breaker, which resulted in a total loss of engine power.

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

Read the full NTSB narrative

The pilot reported that the experimental, amateur-built airplane experienced a total loss of engine power while maneuvering at an altitude of 2,500 ft mean sea level. He activated the electronic fuel injection/ignition system emergency power switch and attempted to restart the engine, but was unsuccessful. He performed a forced landing to a field, during which the airplane sustained substantial damage to the left wing and fuselage. A review of engine and flight data recorded by the electronic flight information system revealed a sudden increase (about 240°F over 1 second) in exhaust gas temperature (EGT) in the No. 1 cylinder, consistent with abnormal combustion immediately preceded the loss of engine power. Shortly thereafter, the engine rpm began to decrease, and the electrical system load increased by about 8 amps, then decreased by about 17 amps. The engine rpm continued to decrease for the next 2.5 minutes, consistent with a windmilling propeller, before it reached 900 rpm and then decreased to 0 rpm just prior to the landing. The electronic ignition circuit breaker was found activated. The reason for the abnormal combustion and the activation of the electronic ignition circuit breaker which resulted in a total loss of engine power could not be determined based on the available information.

Quoted verbatim from the NTSB record.