# SDR AALA201912279010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 25, 2019
- Submitted: December 28, 2019
- Operation: Air carrier
- Aircraft: [N140AN](https://openairdocs.org/aircraft/N140AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6667
- Aircraft time: 14,760 hours, 5,480 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Servo Valve
- Part number: E213260002
- Part serial: J669E21326
- Condition: Faulted
- Location: Mlg Brakes
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201912279010

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT DECLARED EMERGENCY INTO MCO ON ACCOUNT OF PRIMARY BRAKE FAULT MESSAGE. FLIGHT DID A GO AROUND AND THEN LANDED USING ALTERNATE BRAKES. MAINTENANCE REMOVED AND REPLACED NORMAL BRAKE SERVO VALVE ON L/H MAIN GEAR STRUT IAW AMM 32-42-48. NORMAL BRAKING TEST BITE AND BSCU GROUND SCANNING BITE CHECKS GOOD IAW AMM 32-46-00.

---
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.