# SDR AALA991200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N644AA
- Make and model: Boeing 757223
- Aircraft serial: 24602
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Valve
- Part number: S274T12010
- Condition: Defective
- Location: Rt Anti-Skid
- Stage of operation: AP
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA991200

## Discrepancy

DFW - FLT 1597 - EN ROUTE FROM ORD-MEX, RIGHT HYDRAULIC FLUID QTY DECREASED TO .56 WHILE LEFT HYDRAULIC FLUID QTY INCREASED TO 1.35.  RIGHT HYDRAULIC PUMPS DEACTIVATED AND AIRCRAFT LANDED DFW WITHOUT INCIDENT.  REPLACED LEFT AND RIGHT ANTI-SKID SHUTTLE VALVES.  SYSTEM GROUND CHECKED NORMAL OPERATION.  (M)

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