As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TWO HUNG STARTS RIGHT ENG START APU PRESS 20. APU PNEUMATICS DEFERRED PER MEL. -INF- :ON MES MODE APU EGT IS 521 DEG REF FIM 49-11-00 PG 162 BLOCK 12. IF EGT EXCEEDS 500 REPLACE APU. REMOVED APU AND FOUND AIR INTAKE DUCT MATERIAL BLOCKING APU PLENUM. INSP FOUND APU AIR INTAKE DUCT DAMAGED AT AFT END.