No fatalities

COSMOS PHASE II accident at Lake Havasu, AZ, 26 Nov 2022

Lake Havasu, AZ, United States

On November 26, 2022, a COSMOS PHASE II was involved in an aviation accident near Lake Havasu, AZ. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s inadequate preflight inspection and fuel planning and improper in-flight decision-making, which resulted in a total loss of engine power due to fuel exhaustion and a subsequent landing on rough terrain. This summary draws on records from NTSB; 8 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot’s inadequate preflight inspection and fuel planning and improper in-flight decision-making, which resulted in a total loss of engine power due to fuel exhaustion and a subsequent landing on rough terrain.

— NTSB Determination

Contributing factors

PilotContributed to outcome