# SDR 99ZZZX2176

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N531CW
- Make and model: Lear 25D
- Registry model: [Lear 25D](https://openairdocs.org/model/gates-learjet-25d) (OpenAirDocs)
- Aircraft serial: 231
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Part number: 2407003466
- Condition: Ruptured
- Location: Hydraulic System
- Stage of operation: NR
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX2176

## Discrepancy

HYDRAULIC PRESSURE LINE RUPTURED IN-FLIGHT DUE TO 'RUBBING' AGAINST ANOTHER HYDRAULIC LINE'S FITTINGS.  THE RUPTURE CAUSED A LOSS OF HYDRAULIC SYSTEM PRESSURE AND DEPLETION OF THE HYDRAULIC RESERVOIR.  THE LINE IS LOCATED AT THE AFT PRESSURE BULKHEAD AND IS DIFFICULT TO SEE DURING INSPECTION.

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