Service difficulty report · Interface Unit · Airbus A321271NX

Difficulty date
August 13, 2025
Submitted
August 14, 2025
Operation
Air carrier
Aircraft
N4073J
Make and model
Airbus A321271NX
Aircraft serial
11129
Aircraft time
9,973 hours, 1,479 cycles
Part
Interface Unit
Part number
77746111
Part serial
777461IN05419
Condition
Faulted
Part time
9,973 hours, 1,479 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FLT#1908, CDG-JFK. (ETOPS) "ENG SOFT FAULT ON TOGA TAKEOFF. A/THR KICKED OFF AS WELL BUT WAS ABLE TO RESET USING A/THR PUSH BUTTON ON THRUST LEVERS. ( LOST A/THR AFAIN ON APPROACH); TROUBLESHOT ENGINE SOFT FAULT AND AUTO THROTTLE FAULT PER TSM 78.00.810.808.A AND TSM 22.31.00.810.816.A PERFORMED FADEC AND VI OPS TEST PER AMM 73-21-00,73-25-34. NO CORRELATED FAULT FOUND. REMOVED AND REPLACED EIU #2 AS PRECAUTION PER AMM 73-25-34 NO FAULTS OCCUR DURING OPS CHECK PER ENGINE RUN. OPS CHECK GOOD AT THIS TIME. AIRCRAFT SYSTEM NORMAL."

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