What was found
BLUE SYS LOW, RTFL. CREW TURNED OFF SYS WHILE STILL HAVING PRESSURE. INVESTIGATING SOURCE OF LEAK FOUND IN WHEEL WELL AREA OF BLUE ELECTRIC PUMP. MX FOUND LINE BETWEEN PUMP AND DAMPENER CHAFFED THROUGH AND LEAKING. REPLACED LINE AND BLED HYD SYSTEM. ENGINE ONE EPR INDICATION LOST AFTER STARTING BOTH ENGS. A-THR MSG. SAMC TEXT: CREW CYC A4 & R41 AND FADEC SW. NO HELP. CREW COMPLIED WITH MEL7320D. DEFERRED PER SAMC. FBO SWAPPED EIU'S. PROBLEM FOLLOWED. FBO RPL EIU -1 PER MM. ACP TEST. ALL TEST PASSED. NO MSGS.