# SDR AALA202302071419

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2023
- Submitted: February 7, 2023
- Operation: Air carrier
- Aircraft: [N170US](https://openairdocs.org/aircraft/N170US), registered now
- Make and model: Airbus A300*
- Aircraft serial: 1462
- Aircraft time: 69,952 hours, 26,776 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Servo Valve
- Part number: C203740002
- Condition: Defective
- Location: Zone 700 - Gears
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202302071419

## Discrepancy

AIRCRAFT WAS GROUNDED: AFTER LANDING DURING BRAKING-BRAKES PULSING. NO AUTOBRAKE USED.SPEEDS 38 DOWN TO 23 KTS. MAINTENANCE REPLACED ALL 4 NORMAL BRAKE SERVO VALVES (15GG, 16GG, 17GG & 18GG) PER AMM 32-42-48 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK. SEE AALA202302079091 (15GG), AALA202302071708 (16GG), AALA202302071419 (17GG) AND AALA202302070012 (18GG)

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