What was found
NR 3 ENG ROLLBACK AT FL370, ENG IGN OVERRIDE ON. ENGINE RESTARTED ITSELF AT FL 270 IN CLOUDS -10C WITH ALL ENG ANTI-ICE ON. ROLL BACK RESULTED IN N1 OF 48 PERCENT & FUEL FLOW OF 1000. EGT OF 570. PERFORMED INSPECTION OF NR 3 ENGINE INLET & EXHAUST NO DEFECTS NOTED. TROUBLESHOT PER FIM 71-00-13. NO FUEL LEAKS FOUND. COMPLETED NR 3 ENGINE FUEL PUMP & MECH INSTALLATION PER MM 73-20-01-2. PERFORMED LEAK & IDLE RUN CHECK PER JRH. PERFORMED FLT IDLE CHECK & POWER ASSURANCE CHECK PER JRH CHAP 4 AND 5 ON NR 3 ENG. RECORDED ALL ENG PARAMETERS ON FORM M-3488 AND CHECK'S GOOD. OK FOR CONTINUED SERVICE.