What was found
FLT 0417 - SAT - FLIGHT CREW REPORTED E1 FLUCTUATIONS IN FUEL FLOW-N1-ITT FL270. MX PERSONNEL REMOVED AND REPLACED E1 FADEC 1B AND FPMU. OPERATIONALLY CHECKED SATISFACTORY AND AIRCRAFT WAS RELEASED TO RETURN FOR SERVICE. FADEC 1B: P/N 23078837, S/N BX 161593, TSN:8335, CSN:4504. FPMU: P/N 23077658, S/N SCP05086, TSN:7523, CSN:3995 (A)