# SDR CALA2026092219684

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2026
- Submitted: September 23, 2026
- Operation: Air carrier
- Aircraft: [N210UA](https://openairdocs.org/aircraft/N210UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30216
- Aircraft time: 87,099 hours, 18,680 cycles
- Engine: Pwa PW4077
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Anti-Skid Valve
- Part number: 397771
- Part serial: 4154
- Condition: Faulted
- Location: Zone 700
- Part time: 1,487,066 hours, 1,418,673 cycles
- 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/CALA2026092219684

## Discrepancy

ANTI-SKID NORM VLV R EICAS STATUS ONE ANTISKID NORMAL VALVE FAULT ON THE RIGHT MAIN LANDING GEAR.DB BRAKE SYSTEM CONTROL UNIT (PRIMARY CHAN) DB BRAKE SYSTEM CONTROL UNIT (SECONDARY CHANNEL)  REMOVED AND REPLACED NR 11 NORMAL ANTI-SKID VALVE MODULE IAW AMM 32-42-03. LEAK AND OPS CHECKED NORMAL ON GROUND. MESSAGE NO LONGER PRESENT.

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