Military AviationA forum for the professionals who fly military hardware. Also for the backroom boys and girls who support the flying and maintain the equipment, and without whom nothing would ever leave the ground. All armies, navies and air forces of the world equally welcome here.
GPI ??
Ahh, you were looky.
We had API and Mk.1 drift sight on the Goony.
Couldn't even spell TACAN.
Tell that to people today, they wouldn't believe you.
