What was found
ETOPS - FOUND #2 ENG DRAIN MAST LEAKING. USING AMM 71-71-00-200-801-A LEAKAGE RATES AT DRAIN MAST, LEAK WAS BEYOND LIMITS. REF TSM 71-00-00-810-915-A, FOUND FUEL LEAK SOURCE WAS THE FMU. REMOVED & REPLACED #2 ENG FMU, REF AMM TASK 73-21-52-000-802-A/400-802-A. LEAK CHECK & ENGINE RUN PASS. CHECK GOOD, OK FOR SERVICE. PN/SN OFF: 43-7321-9-0012 / 13463, PN/SN ON: 43-7321-9-0012 / 12004.