# SDR 4299749CK

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N49CK](https://openairdocs.org/aircraft/N49CK), registered now
- Make and model: Lear 23LEAR
- Aircraft serial: 23009
- System (JASC): [2917 · Hydraulic Pressure Regulator, Main](https://openairdocs.org/jasc/2917)
- Part: Regulator
- Part number: HC5001
- Condition: Intermittent
- Location: Hydraulic System
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/4299749CK

## Discrepancy

WHILE EN ROUTE, HYDRAULIC PRESSURE WAS NOTED TO FLUCTUATE THEN REMAIN ON ZERO.  AN ALTERNATE AIRPORT WITH A LONGER RUNWAY WAS CHOSEN.  WHILE APPROACHING AIRPORT, HYDRAULIC PRESSURE RETURNED TO NORMAL AND AN UNEVENTFUL LANDING WAS MADE.  HYDRAULIC PRESSURE REGULATOR WAS REPLACED AND SYSTEM TESTED NORMAL.  RECOMMEND REPLACING HYDRAULIC REGULATORS WHEN ERRATIC OPERATION IS ENCOUNTERED.

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