Service difficulty report · Gcu · Airbus A320232

Difficulty date
May 10, 2026
Submitted
May 13, 2026
Operation
Air carrier
Aircraft
N449UA
Make and model
Airbus A320232
Aircraft serial
851
Aircraft time
84,079 hours, 34,928 cycles
Part
Gcu
Part number
740120C
Part serial
3275
Condition
Faulted
Location
Nr 1
Stage of operation
CR
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

CREW REPORTED AT FL 340 UNCOMMANDED RUDDER INPUTS. AUTOPILIT , AUTOTHRUST DISCONNECTED. THE PFD ND FMGC FCU EWD LOWER ECAM BLANKED FLASHED MULTIPLE TIMES. CRC TRUMPETED MULTIPLE TIMES ECAM POPULATED. SOME RETURTNED MULTIPLE TIMES. SOME OF THE ECAMS WERE AUTO FLIGHTRUDDER TRAVEL LIM 1 FAC 1 RUDDER TRIM 1 FAC 1 F/CTL FLAP SYS 1 AIR PACK 1 REG UNALE TO DUPLICTE FAILURE SUSPECT ELECTRICAL ISSUES ESS FEED RELATED , CONTROL UNIT GENERATOR 1 WAS REPLACED AS PER AMM 24-22-34/401 CONFIG 00. TRANSFORMER RECTIFIER 1 WAS REPLACED AS PER AMM 24-32-51/401 CONFIG 00. CURRENT TRANSFORMER AC 42XU1 WAS REPLACED AS PER AMM 24-22-17/401 CONFIG 00. CONTACTOR 11XU1 AND 9XU1 WERE REPLACED AS PER AMM 24-22-55/401 CONFIG 00. CONTACTOR 1PC1 WAS REPLACED AS PER AMM 24-35-55-400-001-A. ENG RAN TWICE ELECTRICAL TRANSFER WORKED PROREPLY NO FAULTS AFTER BOTH ENG RUNS.

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