# SDR AALA202602021777

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N104NN](https://openairdocs.org/aircraft/N104NN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5895
- Aircraft time: 42,116 hours, 8,488 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Control Servo
- Part number: 31073065
- Condition: Faulted
- Location: Zone 500
- Stage of operation: CL
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202602021777

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETUNED TO JFK DUE TO THE FLIGHT CREW REPORTING THAT ON TAKEOFF, AFTER FLAP RETRACTION, THEY RECEIVED THE FOLLOWING ECAM MESSAGES: F/CTL L AIL FAULT, AND F/CTL AIL SERVO FAULT.ON SD PAGE, LEFT AILERON APPEARS INOPERATIVE, RIGHT AILERON WITH ONLY GREEN HYDRAULICS, AND FOR A SIGNIFICANT TIME RIGHT SPOILERS INDICATED RAISED/EXTENDED. THE AIRCRAFT LANDED SAFELY AT JFK WITHOUT FURTHER INCIDENT. MAINTENANCE LEFT WING AILERON SERVO CONTROL VALVE 33CEB AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 27-14-51.

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