# SDR HSYA2011052411

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2011
- Submitted: May 26, 2011
- Operation: Air carrier
- Aircraft: [N926FE](https://openairdocs.org/aircraft/N926FE), registered now
- Make and model: Cessna 208B
- Registry model: [Cessna 208B](https://openairdocs.org/model/cessna-208b) (OpenAirDocs)
- Aircraft serial: 208B0026
- Aircraft time: 10,101 hours, 13,966 cycles
- System (JASC): [3243 · Master Cylinder/Brake Valve](https://openairdocs.org/jasc/3243)
- Part: Master Cylinder
- Condition: Failed
- Location: Mlg
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HSYA2011052411

## Discrepancy

PILOT REPORTED AFTER BLOCK OUT FOR FLIGHT 8691 - RIGHT BRAKE ON AIRCRAFT FELT SPONGY AND BRAKE PEDAL, WHEN FULLY APPLIED, WENT TO THE FLOOR - FAILED. THE ACFT WAS RETURNED TO THE PARKING RAMP FOR MX TROUBLESHOOTING.  R & R RT BRAKE ASSEMBLY IAW MM 32-40-00.  R & R RT BRAKE MASTER CYLINDER IAW MM 32-41-00.  R & R PARKING BRAKE VALVE IAW MM 32-42-00.  BLEED BRAKES EXTENSIVELY IAW MM 32-40-00.  ORIGINAL NEW BRAKE MASTER CYLINDER THAT WAS INSTALLED WAS SUSPECTED TO BE THE DEFECTIVE COMPONENT - (BYPASSING INTERNALLY). NEW BRAKE MASTER CYLINDER WAS REBUILT - REINSTALLED AND ALL OPERATIONAL AND FUNCTIONAL CHECKS IAW MM WERE COMPLETED WITH NO FURTHER DEFECTS NOTED. BRAKE MASTER CYLINDER ON-CONDITION PART.

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