# SDR AALA202511244327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2025
- Submitted: November 24, 2025
- Operation: Air carrier
- Aircraft: [N964AN](https://openairdocs.org/aircraft/N964AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30093
- Aircraft time: 68,725 hours, 29,298 cycles
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Control Unit
- Part number: 142147
- Part serial: A3652
- Condition: Faulty
- Location: Anti-Skid Sys
- Part time: 1,171 hours, 558 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202511244327

## Discrepancy

AIRCRAFT WAS GROUNDED: ANTI-SKID INOPERATIVE LIGHT ILLUMINATED IN THE OFF POSITION. IN RTO, BOTH ANTI-SKID INOPERATIVE AND AUTO-BRAKE DISARM LIGHT ILLUMINATED. PERFORMED ANTI-SKID OPERATIONAL TEST, PER FIM 32-42-00. FAULTED MESSAGE POWER A/B. REMOVE AND REPLACED (AACU)-ANTI-SKID AUTO-BRAKE CONTROL UNIT. PER AMM 32-42-21.

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