As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF ON FLIGHT LEVEL 360 THE -CABIN ALT HI- ALARM WENT OFF. CREW PERFORMED PROCEDURE AND STARTED DESCEND ON FL320. THE CABIN ALT. WAS BACK TO NORMAL. AFTER LANDING, MTC PERFORMED (BITE) TESTS ON CABIN PRESSURE CONTROLLERS NR 1 AND 2. TESTED NORMAL AND GREEN LIGHTS ON BOTH CONTROLLERS (NO FAULT) IAW AMM 21-31-00 ACFT REMAINS NO (ETOPS). ACFT RETURNED TO SERVICE.