What was found
AIRCRAFT 3751, AIRCRAFT JUST BLOCKED IN WITH ENGINES SHUTDOWN AND APU RUNNING, CREW REPORTED BURNING RUBBER SMELL IN CABIN. CORRECTIVE ACTION: REPLACED APU OIL COOLER. (LP 6508517).
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT 3751, AIRCRAFT JUST BLOCKED IN WITH ENGINES SHUTDOWN AND APU RUNNING, CREW REPORTED BURNING RUBBER SMELL IN CABIN. CORRECTIVE ACTION: REPLACED APU OIL COOLER. (LP 6508517).