# SDR 96ZZZX5082

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Hamilton Sundstrand World Wide Repair, repair station SI3R842L](https://openairdocs.org/faa-repair-station/SI3R842L/hamilton-sundstrand-world-wide-repair.md) (OpenAirDocs)
- Make and model: Boeing 747*
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve Shaft
- Part number: 797839
- Condition: Worn
- Location: Press Chk Vlv
- Component: Hamstd, 77385618
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX5082

## Discrepancy

ANTI-ROTATION SLOTS ARE WORN AWAY ON VALVE SHAFT CAUSING SHAFT TO ROTATE AND SHAFT SHOULDER TO WEAR EXCESSIVELY.  REF: OHM 36-12-06, PAGE 606, FIGURE 603.

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