Service difficulty report · Transmission · Bell 407

Difficulty date
November 17, 2014
Submitted
March 12, 2015
Operation
General aviation
Make and model
Bell 407
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

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(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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