# SDR 96ZZZX4279

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N7885S](https://openairdocs.org/aircraft/N7885S), registered now
- Make and model: Bell 47G-5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (OpenAirDocs)
- Aircraft serial: 7873
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Shaft Veny
- Part number: 476452691
- Condition: Plugged
- Location: T/R Gearbox
- Component: 476400751
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX4279

## Discrepancy

RECEIVED NEW REPLACMENT PART FROM BELL.  DURING RECEIVING INSPECTION, NOTICED .1250 INCH HOLE DRILLED IN SHAFT TO VENT GEARBOX WAS PLUGGED SOLID WITH GRAY COATING THAT WAS APPLIED TO INTERIOR OF SHAFT FOR CORROSION PROTECTION.  SUBMITTER STATED THIS COULD POSSIBLY CAUSE OIL LEAKS IN SERVICE.

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