Incident Overview
During a dark night with CAVU weather conditions, the captain instructed the first officer, who was the pilot flying, to pull the circuit breaker to disarm the landing gear warning horn system. The first officer complied without challenging the directive.
Sequence of Events
On final approach, the first officer did not verify that the command to lower the landing gear was executed, and the captain failed to lower the gear. The aircraft subsequently slid to a stop on its belly. During this occurrence, the right engine's three propeller blades fragmented and punctured the passenger compartment.
Injuries
Two passengers seated in row 2, adjacent to the plane of rotation of the propeller blades, were struck by fragments. They received serious leg lacerations and minor facial lacerations.
Probable Cause
The source does not provide a stated probable cause.