What was found
ENGINE FIRE L RED CAS: THROUGH APPROX FL 280 WE ENCOUNTERED A FLICKERING (NOT FLASHING) RED ENGINE FIRE L. SHORTLY AFTERWARDS IT EXATINQUISHED AND WE GOT A YELLOW FIRE DETECT FAIL CAS MESSAGE . THE CYCLE REPEATED ITSELF 3 -4 TIMES CORRECTIVE ACTION: REMOVED PCB NZ105 PNZ; 7468182-1 SN: 31266516-3 DUE TO ERRATIC READING IN ARES AND FLICKERING LEFT ENGINE FIRE INDICATIONS. INSTALLED CUSTOMER SUPPLIED NEW PCB NZ105 PN: 7468182-1 SN: 32218412-3. OPS CHECKS GOOD. REF CE700 AMM 24-60-11