What was found
AIRCRAFT DID NOT PRESSURIZE ON CLIMB OUT ALSO PACKS SEAM TO BE INOP PRESSURIZATION TEST REQUIRED PERFORMED OUTFLOW VALVE OPERATIONAL TEST MANUAL MODE REF 21-31-00-710-801 OPS CHECK GOOD ,RESET CABIN PRESSURE CONTROL SYSTEM AS STATED MEL CARD NO 21180 AND PERFORMED DCPC GROUND TEST REF FIM 21-31 TASK 801 TEST PASSED ,NO FAULT FOUND , PERFORMED IDLE RUN OF BOTH ENGINES REF AMM 71-00-00-700-801-F00. RAN BOTH PACKS ON ENGINE POWER, PACKS OPERATING NORMALLY. PERFORMED PRESSURIZATION CHECK REF AMM 05-51-91-790-801, CABIN PRESSURE LEAK CHECK GOOD. TOMC CONFIRMS PACKS OFF DURING FLIGHT.