# SDR AALA202106219034

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2021
- Submitted: June 21, 2021
- Operation: Air carrier
- Aircraft: [N901NN](https://openairdocs.org/aircraft/N901NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33226
- Aircraft time: 26,374 hours, 10,882 cycles
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Anti-Skid Valve
- Condition: Faulty
- Location: Mlg
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202106219034

## Discrepancy

AIRCRAFT WAS GROUNDED: ANTI-SKID INOPERATIVE LIGHT ILLUMINATED IN FLIGHT, FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED #4 ANTI-SKID VALVE IAW AMM 32-42-31, LEAK AND OPS CHECK GOOD.

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