# SDR ERAA098186

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2004
- Submitted: December 6, 2004
- Operation: Air carrier
- Aircraft: N421EH
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 33067
- Aircraft time: 14,966 hours
- System (JASC): [6410 · Tail Rotor Blades](https://openairdocs.org/jasc/6410)
- Part: Blade
- Condition: Vibration
- Location: Tail Rotor
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ERAA098186

## Discrepancy

VIBRATION AFTER 3 DAYS OF HEAVY RAIN.  NO BALANCE WEIGHTS ON BALANCE BRACKETS.  REMOVED T/R BLADE A-10206 AND SENT TO CTI FOR EVALUATION.  REMOVED T/R BLADES, VISUALLY INSPECTED ALL COMPONENTS, INSTALLED SERVICEABLE T/R BLADES, LUBED TRUNNION, MARVEL BALANCED, TORQUED AND SAFTIED IAW 412 CR/O.

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