As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE AT 31000 FT UNABLE TO MAINTAIN CABIN PRESS. CABIN ALTITUDE ROSE TO 10,200. R & R NR 2 ENG PRV IAW AMM 36-11-52-PB 401. OPERATIONS & LEAK CHECKED VLV & NO LEAKS NOTED. PREFORMED OPERATIONAL TEST OF THE BLEED AIR SYS IAW AMM 36-11-00-710-003-A. OPERATIONAL TESTED GOOD.