What was found
INSPECTION TYPE:NA**NO EMERG DCLD-NO EMERG EQUIP USED-LANDED W/OUT INCIDENT-AC WAS TAKEN OOS** AT FL310, CABIN ALTITUDE CLIMBED TO 9300 FT, THEN DECREASED TO 6000 FT. APPROX 10 MIN LATE, CABIN PRESS CLIMBED 10800 FEET W/MASTER WARN LT . NNC ACCOMP & CABIN ALTITUDE DECREASED TO 6000 FT.R&R CABIN ALTITUDE MODULE ASSY I/A/W AMM 21-31-03 OPS CHECK GOOD I/A/W AMM 21-31-00 . R&R LH ICU I/A/W AMM 21-31-10-400-861 OPS CK GOOD. R&R LCPC PER AMM 21-31-02-0401. NO FAULTS NOTED. ESR IPC 21-31-02-01