What was found
LP1207623 ITEM#3 - AFTER TAKEOFF SKIN VALVE FAULT FOLLOWED QRH TO DEPRESSURIZE CABIN AND RETURNED TO KAUS CORRECTIVE ACTION - PERFORMED OPS CHECK OF AEVC SYSTEM, OPS CHECK NORMAL. PERFORMED PRESSURIZATION OF FUSELAGE, NO DEFECTS NOTED, AC OK TO CONTINUE. AMM 21-26-00-710-001A, AMM 05-53-00-PB601 CONF 00.