# SDR AU981677

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Elbow
- Part number: A71940023
- Condition: Sheared
- Location: Hydraulic System
- Stage of operation: CL
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU981677

## Discrepancy

(AUS) DURING CLIMB, PILOT NOTICED LOSS OF UTILITY SYSTEM HYDRAULIC PRESSURE AND CONTENTS.  GROUND INVESTIGATION FOUND THE RIGHT ANGLE PRESSURE LINE ELBOW ON SYSTEM '1' HYDRAULIC PUMP FITTED TO NR 1 ENGINE HAD COMPLETELY SHEARED OFF AT THE THREAD.  PART TC:  35,076.

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