# SDR 95ZZZX6319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 1995
- 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: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Engine: Ge CT79B
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Tab Washer
- Part number: 7895781
- Condition: Failed
- Location: Gear Case
- Part time: 7,552 hours
- Component: Hamstd, GC49
- 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/95ZZZX6319

## Discrepancy

GEAR CASE WAS RECEIVED DUE TO IDLER GEAR SHIFTED FORWARD WHICH RESULTED IN WEARING A HOLE THROUGH THE FORWARD GEAR CASE HOUSING.  DISASSEMBLY REVEALED THE RIGHT IDLER GEAR NUT, PN 775770-1, HAD COME OFF THE RT IDLER GEAR, PN 775754-5.  THE TABS ON THE TAB WASHER HAD FAILED ALLOWING THE NUT TO COME OFF THE IDLER GEAR.  REFERENCE CMM 72-11-02.

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