What was found
DURING PREFLIGHT, NOTICED CIRCUIT BREAKER D-8 TRIPPED ON BREAKER PANEL P6-2. ACFT GROUNDED. REPLACED RELAY R575 IAW WDM 73-22-11, NO HELP, C/B D-8 WILL NOT RESET. LEAK CHECKED PANEL IAW AMM 05-51-91, NO LEAKS NOTED. REPLACED NR 2 ENG ELECTRONIC ENGINE CONTROL IAW AMM 73-21-60. PERFORMED TESTS LISTED IN THE POWERPLANT TEST REF TABLE AMM 71-00-00-800-811-F00, OPS CHECK GOOD NO FAULTS NOTED, C/B REMAINS CLOSED.