As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GROUND INTERRUPT RESULTING IN RIGHT INTEGRATED DRIVE GENERATOR ON MEL. IN ROUTE TO MIA APU AUTO SHUT DOWN. AIRCRAFT DIVERTED INTO IAD AND LANDED WITHOUT INCIDENT. FOUND APU OIL COOLER LEAKING. REPLACED RIGHT INTEGRATED DRIVE GENERATOR, MPN 735874D HAMILTON SUNDSTRAND, AND REPLACED APU OIL COOLER. SYSTEM GROUND CHECKED NORMAL OPERATION.