Service difficulty report · Actuator · Airbus A321231

Difficulty date
October 23, 2025
Submitted
October 27, 2025
Operation
Air carrier
Aircraft
N923US
Make and model
Airbus A321231
Aircraft serial
6543
Aircraft time
33,759 hours, 13,729 cycles
Part
Actuator
Part number
830D000001
Part serial
0830D00LI204853
Condition
Tripped
Location
Zone 500 Slat
Stage of operation
AP
How discovered
O
Nature of condition
F, J
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED INBOUND INTO SFO DUE TO THE FLIGHT CREW REPORTING A FLIGHT CONTROL SLATS FAULT ECAM ON APPROACH. THE AIRCRAFT LANDED SAFELY AT SFO AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE FOUND THE LEFT WING #3 SLAT TORQUE MOTOR TRIPPED AND REPLACED SLAT ACTUATOR PER AMM 27-81-00. (AALA202510275989) AND MAINTENANCE ALSO FOUND THE LEFT-HAND ASYMMETRY POSITION PICK OFF UNIT (APPU) OUT OF ADJUSTEMENT, ACCOMPLISHED ADJUSTMENT PER AMM 27-81-00. (AALA202510272556) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED.

More about the Airbus A321-231