# SDR 95ZZZX2399

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N1048Y](https://openairdocs.org/aircraft/N1048Y), registered now
- Make and model: Skrsky S61A
- Aircraft serial: 61161
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Camshaft
- Part number: S6135206147
- Condition: Cracked
- Location: M/R Gearbox
- Part time: 205 hours
- Stage of operation: NR
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX2399

## Discrepancy

PILOT HEARD AN UNUSUAL GROWLING NOISE FROM THE NR 1 INPUT AT REDUCED POWER.  A FEW HOURS LATER, A SLIGHT VIBRATION AT REDUCED POWER WAS FELT IN THE AIRFRAME.  THE CHIP PLUG AND SCREEN WERE CHECKED AND A FEW SMALL SLIVERS WERE FOUND ON THE CHIP PLUG AND 12 SMALL FLAKES OF MAGNESIUM IN THE SCREEN.  ON DISASSEMBLY OF GEAR BOX INPUT SECTION, NR 1 CAMSHAFT WAS FOUND BROKEN.  INPUT CAMSHAFT IS BEING SENT TO A LAB FOR FRACTURE ANALYSIS.  REF:  OPER CONTROL NR JYER5329.

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