# SDR AALA202506197975

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2025
- Submitted: June 19, 2025
- Operation: Air carrier
- Aircraft: [N885NN](https://openairdocs.org/aircraft/N885NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31139
- Aircraft time: 38,707 hours, 16,664 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Unit
- Part number: 142147
- Part serial: A4240
- Condition: Faulted
- Location: Zone 700
- Part time: 3,332 hours, 1,588 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/AALA202506197975

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AUTO BRAKE DISARMED, LIGHT ILLUMINATED WITH SWITCH IN RTO POSITION. CONFIRMED AUTOBRAKES INOPERATIVE.  REMOVED AND REPLACED AACU-ANTISKID AUTOBRAKE CONTROL UNIT. PER AMM 32-42-21. OPERATIONAL TEST GOOD, PER AMM 32-42-00.

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