As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU AUTO SHUTDOWN ON GROUND. STRONG ODOR OF ELECTRICAL SMOKE IN COCKPIT PRIOR TO APU SHUTDOWN. RECEIVED APU FIRE WARNING. COMPLIED WITH QRC AND QRH PROCEDURES. FERRIED TO SLC. REMOVED AND REPLACED APU ASSEMBLY IAW MM 49-10-00 AND RII 49-401. OPS CHECK GOOD.