# SDR UALA2012070103498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2012
- Submitted: August 24, 2012
- Operation: Air carrier
- Aircraft: [N855UA](https://openairdocs.org/aircraft/N855UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1737
- Aircraft time: 35,150 hours, 14,334 cycles
- Engine: Iae V2522A5
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Valve
- Part number: 7319604
- Part serial: 2288
- Condition: Failed
- Location: Elevators
- Stage of operation: NR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012070103498

## Discrepancy

CHRONIC MODERATE AIRFRAME VIBRATION.  SLIGHT RUDDER INPUT CEASES VIBRATION.   REPLACED BOTH ELEVATOR SERVO CONTROL VALVES PER MM.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.