# SDR MTNA201312170001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 2013
- Submitted: January 13, 2014
- Operation: Air carrier
- Aircraft: [N910FX](https://openairdocs.org/aircraft/N910FX), registered now
- Make and model: Aerosp ATR 42-320
- Registry model: [Aerosp ATR 42-320](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-320) (OpenAirDocs)
- Aircraft serial: 277
- Aircraft time: 24,700 hours, 28,428 cycles
- System (JASC): [3243 · Master Cylinder/Brake Valve](https://openairdocs.org/jasc/3243)
- Part: Master Cylinder
- Part number: 10025111Y00
- Part serial: 661
- Condition: Leaking
- Location: Brake System
- Stage of operation: LD
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MTNA201312170001

## Discrepancy

F/O LT BRAKE INOPERATIVE, GOES TO THE FLOOR.  TROUBLESHOT SYS AND REPLACED THE COPILOTS BRAKE MASTERCYLINDER.  THE SYSTEM CHECK GOOD AND THE ACFT WAS RETURN TO SERVICE.

---
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.