As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED THE APU INTAKE RIBS ARE CRACKED (2 TOTAL). MAINTENANCE REMOVED AND REPLACED THE APU AIR INLET ASSEMBLY IAW AMM 49-16-01. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.