thanks for the help SkylineGTRFreak
Well, as you see, thanks for your help SkylineGTRFreak, for telling me how to convert fsx aircraft for gta sa, well this is my first plane is the "Beech King Air 350", the plane has the following things:
-transparent windows
-texture
-interior

ORIGINAL AUTHOR: FSX
Convert by: gtadavid
ORIGINAL TEXTURE: FSX
REPLACE : BEAGLE

FIX:
the new Beech King Air 350, has improved very well, brings the following enhancements and defect:
-has no interior (the bad)
-there is that black thing on the plane
-3d cockpit
-transparent windows

FINAL (V2):
new Beech King Air 350, which has these fixes:
-has an interior, seats, textured
-transparent windows
-no black bug
-ailerons, and rudder, now better
-3d cockpit

Beech King Air 350 (V3)
Beech King Air 350 new, much improved with the following improvements:
-spoilers (with animation)
-3d cockpit
-New Shadow
-interior (you can not enter)
-transparent windows (that's obvious)