As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3812 -DIV/PRESS- DIVERTED TO PHL DUE TO CABIN ALTITUDE WARNING ALARM OCCURRED IN CRUISE AT FL240. CORRECTIVE ACTION: FOUND CLAMP ON APU BLEED AIR DUCT BOOT DISCONNECTED. FOUND RIGHT PACK FCV CLAMP LEAKING. TIGHTENED BOTH. SINGLE PACK CONFIDENCE CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.