ACFT EQUIP PROB NOT DECIPHERED. ACFT RELEASED TO SVC WITH REPEAT PROB AT DEST ARPT.

Narrative

AT APPROX XX00AM ON THE MORNING OF JUN/THU/94; AN ORD MECH CALLED STATING THEY WERE DOING A BITE CHK ON #2 ENG ON ACFT; AN A-320; FADEC SYS BECAUSE OF AN 'A' FAULT MESSAGE AFTER A NORMAL ENG START. THE ENG WAS SHUT DOWN AND A RESTART RESULTED IN NO LIGHT OFF WITH IGNITION A&B FAULT. THE MECH CALLED BACK AFTER ALL TESTS WERE ACCOMPLISHED. NO FAULTS WERE RPTED IN THE SYS THROUGH THE BITE. A CONFERENCE CALL WITH THE ENG CTLR WAS MADE; AND THE DECISION WAS MADE TO FLY TO BWI AND BACK TO ORD. DURING THAT TIME; ENGINEERING WOULD BE ABLE TO EVALUATE THE PROB. WHEN THE AIRPLANE ARRIVED AT BWI; THE SAME MESSAGE WAS PRESENT. AT THAT POINT THE V2500 ENG ENGINEER SUGGESTED A RESTART OF THE ENG SHOULD BE ACCOMPLISHED; AND A REINTERROGATION OF THE #2 ENG FADEC SYS FOR FAULTS. THIS WAS DONE; AND NO FAULTS WERE PRESENT. AT THAT POINT; THE ENGINEER; THE CAPT; THE ENG CTLR AND CTLR (MYSELF) ALL CONCURRED THAT; IF AFTER ENG START AND TAXI FOR TKOF; THE FAULT DID NOT RECUR; IT WOULD BE ALL RIGHT TO BRING THE AIRPLANE BACK TO ORD; AT WHICH TIME THE #2 ENG ELECTRONIC ENG CTL WOULD BE REPLACED. THE PROB IS DECIPHERING OF INFO; SOME OF WHICH IS CRYPTIC; AND HAS NOT BEEN COMPLETELY SORTED OUT BY ENGINEERING. THE MEL DOES NOT ADDRESS MANY OF THESE FADEC PROBS. TO PREVENT FURTHER OCCURRENCES; ENGINEERING IS WORKING WITH AIE (THE ENG MANUFACTURER) TO CLARIFY MESSAGES AND WHAT IMPACT THEY HAVE ON THE ENG PERFORMANCE; AND ALSO; THE CTLRS ARE TAKING A MUCH MORE CONSERVATIVE APCH TO ENG FADEC MESSAGES.