# SDR ERAA077296

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2001
- Submitted: December 3, 2001
- Operation: General aviation
- Aircraft: N418EH
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft time: 15,533 hours
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Part number: 412040002103
- Part serial: ANG00134
- Condition: Making Metal
- Location: Tail Rotor
- Part time: 7,849 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ERAA077296

## Discrepancy

TRANSMISSION IS  MAKING METAL. TAILROTOR QUILL BEARINGS CAUSE OF METAL CONTAMINATION.  SEAL LEAKS.  MAIN INPUT R/B QUILL, SYS II HYD QUILL AND AUX JETS ON RING GEAR CASE. ACTION TAKEN:  REPAIRED, PARTIALLY DISASSEMBLED, VISUALLY INSPECTED EXPOSED COMP. INSTALLED NEW BEARINGS T/R QUILL AND PACKED WITH GEAR, INSTALLED NEW SEALS, AND GASKET, O RINGS TO REPAIR LEAKS.  ALL WORK IAW BHT 412 CR&O.

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