Service difficulty report · Control Unit · Airbus A321271NX

Difficulty date
June 30, 2025
Submitted
July 2, 2025
Operation
Air carrier
Aircraft
N4048J
Make and model
Airbus A321271NX
Aircraft serial
10446
Aircraft time
14,767 hours, 2,190 cycles
Part
Control Unit
Part number
74434211
Part serial
744342IN00392
Condition
Failed
Location
Alscu
Part time
10,633 hours, 1,599 cycles
Stage of operation
NR
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. "L2 TSI – HIGH LEVEL SENSOR FAULT DUE TO AVIATAR REPORTING THE FOLLOWING FAULT FUEL ACT AFT 1 HI LVL IAW TSM 28-46-00-810-873-A. IF NO FAULTS ARE FOUND, REPLACE AUXILIARY LEVEL SENSING CONTROL UNIT (ALSCU) (60QJ) PER AMM 28-46-35. C/W ALL GMM BUY BACK AND RII REQUIREMENTS- THANK YOU SOURCE- AVIATAR; (RESOLVED ON W/O: 1423896 TASKCARD: NR-00001) REMOVED AND REPLACED ALSCU AT 60QJ. PERFORMED OPS CHK AND OPS CHK TEST GOOD. NO FURTHER DEFECTS NOTED AT THIS TIME. REF AMM 28-46-35."

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