# SDR CALA2026051316218

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2026
- Submitted: May 13, 2026
- Operation: Air carrier
- Aircraft: [N449UA](https://openairdocs.org/aircraft/N449UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 851
- Aircraft time: 84,079 hours, 34,928 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026051316218

## Discrepancy

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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