# SDR CA141201003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2014
- Submitted: March 12, 2015
- Operation: General aviation
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Transmission
- Part number: 406040052109
- Condition: Damaged
- Location: Main Rotor
- Part time: 7,473 hours
- 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/CA141201003

## Discrepancy

(CAN) RECENTLY REPORTED 3, NOTE 1, MAIN TRANSMISSION UPPER CASES DAMAGED DUE TO INCORRECT INSTALLATION OF THE PYLON DOWN STOP, PN: 407-010-208-105.  THE MM FIG 63-26, SHEET 1 AND THE IPB FIG 63-13 ARE SHOWING THE BONDING STRAP BRACKET INSTALLED IN THE OPPOSITE DIRECTION ON THE DOWN STOP ASSY, PN: 407-010-208-105 PRINT.  CUSTOMER IS REQUESTING MORE DETAILED INSTRUCTIONS BE ADDED TO THE MM 63-41 PYLON BEAM ASSEMBLY INSTALLATION AND CORRECTION TO THE MM AND IPB ILLUSTRATIONS OF THE BONDING STRAP BRACKET.  REPAIR REQUESTED FOR TRANSMISSION ASSY, PN: 407-040-006-115, TT: 7472.55, TSO: 3110.49.  NOTE 1: MFG DID NOT RECEIVED 2 OF THE REPORTS MENTIONED HERE.

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