No Eddie, a Class B aircraft does not require an SOM.
If you want the 5,000 hour TBO as per AD/ENG/5 however you need a SOM ...
AD/ENG/5
Amdt 9
PT6A Enhanced Maintenance Program Appendix A
REQUIREMENTS
The PT6A engine maintenance program shall be carried out in accordance with approved maintenance
data and detailed in a system of maintenance approved under Civil Aviation Regulation (CAR 1988)
42M. The system of maintenance shall include, but need not be limited to, the following requirements .......
Last edited by edsbar; 28th Nov 2015 at 20:37.