# SDR HEEA087851

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2003
- Submitted: June 30, 2003
- Operation: Air carrier
- Aircraft: [N406PH](https://openairdocs.org/aircraft/N406PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53198
- Aircraft time: 5,527 hours
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Case
- Condition: Corroded
- Component: Transmission
- Component part number: 407040006107
- 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/HEEA087851

## Discrepancy

TRANSMISSION ASSY HAS CORROSION AT LOWER CASE MATING FLANGE. REPLACED WITH SERVICEABLE PART.

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