# SDR ASAA2016102918504

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 29, 2016
- Submitted: October 31, 2016
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 39,806 hours, 11,749 cycles
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Valve
- Part number: 39353
- Part serial: 30719
- Condition: Failed
- Location: Anti-Skid Sys
- Part time: 39,806 hours, 11,748 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016102918504

## Discrepancy

ANTI-SKID LIGHT ILLUMINATED AFTER LIFT-OFF AND FLICKERED THROUGHOUT REMAINDER OF FLIGHT.  ACFT GROUNDED.  AIR TURNBACK - PERFORMED AACU BITE B737-800 FIM 32-42 TASK 801. FOUND FAULT LOGGED "VLV 4". PERFORMED BITE AGAIN AFTER CLEARING FAULT. FOUND BOX 1-4 LOGGED. ACCOMPLISHED  FIM 32-42 TASK 803. FOUND VALVE 4 OUT OF LIMITS. REMOVED AND REPLACED THE RT OUTBOARD ANTI-SKID VALVE, IAW AMM 32-42-31. LEAK CHECKED GOOD. PERFORMED AACU BITE FIM 32-42 TASK 801. NO FAULTS LOGGED. SYSTEM CHECKED NORMAL.

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