What was found
ETOPS SIGNIFICANT SYSTEM -CABIN PRESSURIZATION UNBALE TO MAINTAIN SCHEDULE ALTITUDE AT FL 380 W/ENG ANTI ICE ON. DUCT PRESS 15 PSI, OUTFLOW VLV FULLY CLOSED, CABIN CLIMB @300 FPM REACHED 8500'(SCHED IS 6500') COND SAME IN AUTO1 OR AUTO2 W/ENG ANTI ICE OFF CABIN ALT DESCEND BACK TO 6500'.//PERFORMED FIM21-31-00 FIG 103. NO DEFECTS NOTED. PERFORMED AMM36-23-00 AIR SUPPLY BITE SYS TEST NO DEFECTS NOTED TOOK AC ON HI PWR RUN NO DEFECTS NOTED ON L/R ENG BLEED AIR SYS. ACCOMP FIM36-10-00/101 FIG 28A R&R BOTH PRV CONTROLLERS PER AMM36-11-19. OPS & SEC CK OF PRV CNTLRS GOOD PER AMM36-11-19.