As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST PRESSURIZATION AT FL 360. NO INDICATION. SLOW CABIN CLIMB RATE - APPX 500 FPM. ABLE TO CONTROL CABIN DURING EMERG DESCENT IN "MAN". BITE CHECKED BOTH PRESSURE CONTROLLERS - CHECKED OK. FOUND PNEUMATIC DUCT PRESSURE SEAL IN AFT KEEL BEAM WITH BAD CLAMP, REPLACED CLAMP IAW TASK 36-13-01-420-801, CHECKED OK.