# SDR HEEA978850

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N427PH](https://openairdocs.org/aircraft/N427PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53059
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Bearing
- Part number: 206011731001
- Condition: Defective
- Location: T/R Gr Box
- Part time: 14 hours
- Component: 406040400115
- 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/HEEA978850

## Discrepancy

UPON COMPLYING WITH A 300 HOUR/3 MONTH T/R GEARBOX PITCH CHANGE MECHANISM LUBE, FOUND GREASE ZERT ON PITCH CHANGE HOUSING WOULD NOT ACCEPT GREASE. DISASSEMBLED PITCH CHANGE MECHANISM.  ON INVESTIGATION FOUND BEARING 206-011-731-001 IN PITCH CHANGE HOUSING DID NOT HAVE A HOLE IN GREASE CHANNEL TO ALLOW GREASE INTO THE NEEDLE BEARING AREA.  REMOVED BEARING AND INSTALLED SERVICEABLE BEARING.

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