Incident Overview
An airplane experienced a fire originating near the right main landing gear while taxiing after refueling. In response, the pilot shut down the engine, and all occupants safely exited the aircraft.
Maintenance History
The airplane had undergone an annual inspection the day prior to the incident. As part of this inspection, heavy-duty brakes were installed. During installation, a shim insulator and a main gear axle spacer were required but were not installed.
Findings
Examination revealed that both the shim insulator and the main gear axle spacer were missing. Their absence resulted in a frictional buildup of heat during taxiing, which initiated the fire.