# SDR 20000502SH006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2000
- Submitted: May 2, 2000
- Operation: Air carrier
- Make and model: Boeing 737*
- System (JASC): [3243 · Master Cylinder/Brake Valve](https://openairdocs.org/jasc/3243)
- Part: Housing
- Part number: 654458211
- Condition: Cracked
- Location: Master Cylinder
- Component: Sov Mod Pack, Boeing
- Component part number: 65445815
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000502SH006

## Discrepancy

HOUSING ASSEMBLY IS CRACKED THROUGH INTERNAL PORT THAT SUPPLIES THE HYDRAULIC FLUID TO THE LARGE BORES.  POSSIBLE CAUSE:  HOUSING ASSY HAS BEEN NOTED TO HAVE A HISTORY OF CRACKING IN THIS AREA.  WEAK AREA OF HOUSING DUE TO DESIGN OF MANUFACTURING PROCESS.  (X)

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