Try going to the market place and find the add-on Reno T6 plane you purchased. It should say owned. Click on it and see if there is an update.
For some reason the two extra aircraft I purchased did not show an update in content manager unless I went to them in marketplace and selected them.
If that does not work try deleting the plane, reboot the sim and launch Reno and see if it works. Then reinstall the T6.