What was found
VENT SKIN VALVE FAULT. PERFORMED TEST OF AEVC, NO FAULTS FOUND. PERFORMED OP CHECK OF AIR INLET CHECK VALVE PER AMM 21-26-56-280-002-A, OP CHECK OKAY. DUE TO PRIOR WRITE UP FOR AEVC SYSTEM FAULT REPLACED AEVC. DURING SYSTEM TEST, RECEIVED SKIN AIR OUTLET VALVE FAULT. DEFERRED SKIN AIR OUTLET PER MEL. PERFORMED TEST OF AEVC, NO FAULTS FOUND. PERFORMED OP CHECK OF AIR INLET CHECK VALVE PER AMM 21-26-56-280-002-A, OP CHECK OKAY. DUE TO PRIOR WRITE UP FOR AEVC SYSTEM FAULT REPLACED AEVC. DURING SYSTEM TEST, RECEIVED SKIN AIR OUTLET VALVE FAULT. DEFERRED SKIN AIR OUTLET PER MEL. DEFERRED DIRECTLY BY TOMC ADDED TRACKING TAG AND IMAGES OF COMPONENTS. REF TSM 21-26-00-810-804-A FOR SKIN AIR OUTLET VALVE FAILURE. UPDATING M/L WITH OUTLET VALVE 22HQ IN CASE NEEDED AFTER T/S. AEVC ALREADY BEEN REPLACED.