Naibor wrote on Jul 23^rd, 2015 at 10:24am:

Hello, I open this topic to know if there are any texture for CS727 with transparent windows, I think thar it is the only fault  thing to this aircraft to be PERFECT.

1. Backup the cs727_C_23_T.dds in the FSX\SimObjects\Airplanes\CS_B727-100\texture folder.
2. Copy the cs727_C_23_T_0 file from FSX\Captain_Sim\727\ace\reflection folder, and paste in the FSX\SimObjects\Airplanes\CS_B727-100\texture folder.
3. Rename the cs727_C_23_T_0 to cs727_C_23_T.dds - you must add the .dds extention, or it won't work (you'll get black windows)!

Now you should have transparent windows (no reflections). ;)