Incident Overview
A pilot reported that during a ground operation, the parking brake was set while the left engine of a multiengine airplane was running. The pilot proceeded to start the right engine. After the right engine started, the pilot checked the engine instruments and was unaware that the airplane was moving forward on the ramp.
Sequence of Events
The airplane traveled approximately 75 feet forward. During this movement, the right engine impacted the propeller of a parked, unoccupied single-engine airplane. The collision occurred on the ramp, with the parked aircraft sustaining damage to its propeller.
Post-Accident Findings
A post-accident examination of the multiengine airplane revealed that its parking brake was not completely engaged. This condition allowed the airplane to roll forward despite the pilot's belief that the brake was set.
Contributing Circumstances
The pilot reported not noticing the airplane's movement while focusing on engine instruments after starting the right engine. No other factors were identified in the source.
Damage Assessment
The incident resulted in physical contact between the multiengine airplane's right engine and the propeller of the parked single-engine airplane. The source does not specify the extent of damage to either aircraft.