Incident Overview
During a climb through flight level 240, the flight crew observed that the number one engine fire warning light had illuminated. Following the engine fire checklist, they shut down the affected engine and diverted to Miami, Florida for an unscheduled landing.
Investigation Findings
A subsequent investigation determined that the starter valve, part number 392688-1, had remained in the open position. The aircrew had not identified this malfunction during the engine starting sequence. As a result, hot bleed air continued to flow into the starter system. The sustained flow of hot air caused the starter to disintegrate. Fragments from the disintegration damaged nearby wiring, fuel lines, and oil lines. The combination of damaged components and hot air led to a fire in the engine area.
The investigation did not specify the aircraft type, registration, operator, date, or number of occupants. No information regarding injuries or the extent of damage beyond the lines and wiring was provided.