# SDR 2000ZZZX403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N407PR](https://openairdocs.org/aircraft/N407PR), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53232
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Nut
- Part number: 406040090103
- Condition: Leaking
- Location: Mast Bearing
- Part time: 1,460 hours
- Stage of operation: IN
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2000ZZZX403

## Discrepancy

MAST SEAL, P/N 28905-3499, WORE GROOVE IN MAST BEARING NUT, P/N 406-040-090-103.  UPON REMOVAL, FOUND TORQUE ON NUT BELOW RECOMMENDED TORQUE OF 450 FEET/POUNDS (HAND TIGHT).

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