# SDR TRBA2011086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 28, 2011
- Submitted: June 29, 2011
- Operation: Air carrier
- Aircraft: [N451AT](https://openairdocs.org/aircraft/N451AT), registered now
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 451
- Aircraft time: 30,534 hours, 30,123 cycles
- System (JASC): [3243 · Master Cylinder/Brake Valve](https://openairdocs.org/jasc/3243)
- Part: Master Cylinder
- Part number: 10025111Y00
- Part serial: 684
- Condition: Inoperative
- Location: Mlg
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA2011086

## Discrepancy

THE F/O REPORTED THE LT BRAKE FELT SPONGY DURING LANDING.  THE ACFT WAS REMOVED FROM SERVICE.  R & R THE F/O MASTER CYLINDER IAW JIC 32-42-13.  THE ACFT WAS RETURNED TO SERVICE.

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