# SDR SWAA2026072773191

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2026
- Submitted: July 27, 2026
- Operation: Air carrier
- Aircraft: [N8866H](https://openairdocs.org/aircraft/N8866H), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67860
- Aircraft time: 10,894 hours, 5,865 cycles
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Control Unit
- Condition: Faulty
- Location: Anti-Skid
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026072773191

## Discrepancy

ANTI SKID INOP LIGHT ILLUMINATED. CREW STATED ANTI SKID INOP LIGHT ILLUMINATED ON TAKE OFF ROLL AND REMAINED THROUGH OUT FLIGHT WITH SELECTOR IN OFF POSITION. UPON LANDING WITH NO AUTO BRAKES SELECTED LIGHT EXTINGUISHED. FOUND FAULT BOX 4 ON THE AACU. THE RESISTANCE OF VALVE V200 PINS 1 TO 2 WAS 191.2 OHMS AND RESISTANCE ON VALVE V124 PINS 1 TO 2 WAS 197.6 OHMS. COULD NOT DUPLICATE FAULT AND REMOVED AND REPLACED AACU IAW AMM 32-42-21 FOR PRECAUTIONARY MEASURES. AACU OPS CHECKED GOOD. IFIM TASK 32-42-00-810-831

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