# SDR HEEA966755

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Snias AS350B2
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Gear Set
- Part number: 350A33109100
- Condition: Making Metal
- Location: T/R
- Part time: 112 hours
- 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/HEEA966755

## Discrepancy

GEARS WERE INSTALLED ON GEARBOX S/N M-811 AT T.S.O. -0-.  AFTER 112 HOURS METAL PARTICLES WERE FOUND ON CHIP DETECTOR. UPON DISASSEMBLY, FOUND UNUSUAL SCUFFING ON GEAR TEETH, NO OTHER DEFECTS WERE FOUND ON GEARBOX.

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