No fatalities

2021-08-11: Cessna 425 Conquest (N783MB) — K-Aero — Helena, United States of America

Helena, United States of AmericaLanding (descent or approach)

On August 11, 2021, a Cessna 425 Conquest (registration N783MB) operated by K-Aero was involved in an aviation accident near Helena, United States of America during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: A flameout of both engines due to fuel starvation for reasons that could not be determined due to the airplane’s damage. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781189958Data APIEditorial standards

A pilot reported left engine flameout and subsequent right engine power loss during descent, leading to a collision with trees. The probable cause was fuel starvation for undetermined reasons.

Flight Details

On the morning of the accident, the pilot reported filling both wing fuel tanks to full before takeoff. After departure, the airplane climbed to a planned cruise altitude of 24,000 feet mean sea level (msl). The pilot was en route to the intended destination when the left engine experienced a flameout. In response, the pilot diverted from the originally planned destination and initiated a descent.

Engine Problems

During the descent, at approximately 7,900 feet msl, the right engine suffered a loss of power. The pilot reported that he would be unable to reach an airport. Shortly thereafter, the airplane collided with trees, coming to rest with the right wing and empennage severed from the fuselage.

Postaccident Examination

Postaccident examination of the wreckage revealed no anomalies. A partial amount of fuel was found in both filter bowls, but it could not be determined if fuel was able to reach the engines. A complete examination of the fuel system was precluded by the damage sustained during impact. The presence of fuel in the wing tanks at the time of impact was noted. The sequential flameout of both engines within a short time frame suggests a fuel supply or delivery issue; however, the specific nature of the problem could not be identified due to the extent of damage.

Probable cause

A flameout of both engines due to fuel starvation for reasons that could not be determined due to the airplane’s damage.