Incident Overview
A pilot experienced inadequate left engine manifold pressure during a takeoff attempt at Newport. The takeoff was aborted, and the pilot subsequently decided to ferry the aircraft to New Bedford for inspection. The engines were restarted and operated satisfactorily.
Flight to New Bedford
The flight to New Bedford proceeded without incident until the aircraft was on a two-mile final approach to runway 5. At that time, the left engine stopped. While the pilot attempted to feather the engine, both the engine and part of the left wing caught fire. The pilot continued toward the airport with flaps and landing gear extended, maintaining a speed of 125 mph.
Final Approach and Collision
The pilot reported being in a good position to land when he heard a loud bang, which he described as sounding like a cable. The aircraft then entered a 25° left bank. The pilot leveled the wings by reducing right engine power. Subsequently, the aircraft collided with trees to the left of the runway.
Post-Accident Examination
Examination of the aircraft revealed that the left engine exhaust manifold header assembly, which is connected to the turbocharger, was cracked along a weld seam. Additionally, the aileron control cables routed behind the left engine were found burned to separation. Both occupants sustained injuries.
Probable Cause
The probable cause, as determined by the official investigation, includes the following occurrences: loss of engine power during final approach due to a cracked exhaust manifold/pipe and disabled turbocharger; an engine fire resulting from the exhaust system failure; loss of control in flight because the fire burned the aileron control cables, disabling the aileron; and subsequent in-flight collision with trees.