# SDR DXTA2011030704493

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2011
- Submitted: March 7, 2011
- Operation: Air carrier
- Aircraft: [N699QS](https://openairdocs.org/aircraft/N699QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605199
- Aircraft time: 7,984 hours, 6,283 cycles
- System (JASC): [3297 · Landing Gear System Wiring](https://openairdocs.org/jasc/3297)
- Part: Relay
- Part number: MS24166D2
- Condition: Eroded
- Location: Brake Pump
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2011030704493

## Discrepancy

AT POWER UP PRIOR TO TAKE OFF ANTISKID LIGHT ILLUMINATED. THE POWER BRAKE CB POPPED. RETURNED TO RAMP. POWER BRAKE HAD BLED DOWN SUFFICIENTLY AND PNUEMATIC BRAKES WERE USED TWICE TO STOP AND PARK AIRCRAFT.  OPS CHECKED BRAKES REPEATEDLY & NO PROBLEM NOTED (INITIALLY).  CHECKED CIRCUIT BREAKER FOR SECURITY AND CONTINUITY. PERFORMED COMPLETE BRAKE BLEEDING PROCEDURE.  INVESTIGATED AND FOUND CONTACTS OF PUMP RELAY SEVERELY PITTED & ERODED (HIGH CURRENT DRAW).  R & R PUMP RELAY.  OPS CHECKED GOOD. WORK DONE IAW THE MM 32-42-00.

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