# SDR AALA202608145189

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2026
- Submitted: August 14, 2026
- Operation: Air carrier
- Aircraft: [N556UW](https://openairdocs.org/aircraft/N556UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5244
- Aircraft time: 43,631 hours, 18,080 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Computer
- Part number: 3945129100
- Part serial: ELACVB032919
- Condition: Defective
- Location: Nr 2 Elac
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202608145189

## Discrepancy

AIRCRAFT WAS GROUNDED: THE FLT CREW REPORTED THAT THE ACFT DID NOT TRIM ITSELF PROPERLY DURING  PREVIOUS TWO FLTS,  BOTH CAPTAIN AND FIRST OFFICER EXPERIENCED UNUSUAL PITCH UP TENDENCIES DURING CLIMB OUT & APPROACH TO LANDING WHILE HAND FLYING ACFT.  FLT CREW REPORTED THAT CONSTANT DOWNWARD PITCH ADJUSTMENTS WERE REQUIRED TO MAINTAIN DESIRED PITCH,  NO ISSUES WITH PITCH OR SPEED OR ALTITUDE CONTROL NOTED WITH AUTOPILOT ENGAGED. MAINT ACCOMPD AN OPS CHK OF EFCS BY BITE GROUND SCAN WITH NO FAULTS FOUND.  ACCOMPD AN OPS TEST OF THE TRIMMABLE HORIZONTAL STAB ACTUATOR ELECT CONTROL, NO FAULTS FOUND. CHK OF SYNCHRONIZATION BTWN PITCH TRIM HANDWHEEL & STAB ACCOMPLISHED WITH A NO FAULTS FOUND.  MAINT REPLACED ELAC IN POSITION 2 DUE TO THE HISTORY OF UNUSAL PITCH DURING CLIMB.  SATISFACTORY OPS CHK ACCOMPLISHED, NO FAULTS NOTED.

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