What was found
AIR TURNBACK, NR 4 TURBO COMPRESSOR OVERHEAT LIGHT ON. UNABLE TO HOLD CABIN ALTITUDE. RETURNED TO MIAMI WITHOUT INCIDENT. REMOVED AND REPLACED NR 4 T/C, SYS OPS AND FUNCTIONAL TEST OK, IAW MM 21-2-1.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURNBACK, NR 4 TURBO COMPRESSOR OVERHEAT LIGHT ON. UNABLE TO HOLD CABIN ALTITUDE. RETURNED TO MIAMI WITHOUT INCIDENT. REMOVED AND REPLACED NR 4 T/C, SYS OPS AND FUNCTIONAL TEST OK, IAW MM 21-2-1.