# SDR ASOA03655

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2003
- Submitted: January 15, 2004
- Operation: Air carrier
- Aircraft: [N823AS](https://openairdocs.org/aircraft/N823AS), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7196
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Tube
- Part number: 601R7528661
- Condition: Cracked
- Location: Hyd System
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA03655

## Discrepancy

DURING CRUISE FROM ATL-YUL, AT APPROXIMATELY 29,000 FT THE CREW RECEIVED A HYDRAULIC NR 1 LOW PRESSURE AMBER CAUTION MESSAGE, WITH A PRESSURE DROP FROM 1500 PSI TO ZERO AND A QUANTITY READING OF ZERO.  THE CREW COMPLIED WITH QRH PROCEDURES AND THE AIRCRAFT DIVERTED INTO CVG, LANDING SAFELY.  THE TOWER ROLLED EMERGENCY VEHICLES AS A PRECAUTIONARY MEASURE.  MAINTENANCE REMOVED AND REPLACED THE SYSTEM 1 PUMP PRESSURE TUBE ASSEMBLY, CASE DRAIN TUBE ASSEMBLY, ENGINE HYDRAULIC PUMP, AND FOUR LINE STAND-OFF ISOLATORS.  OPS AND LEAK CHECKS GOOD.  AIRCRAFT OK FOR SERVICE.  (M)

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