What
is a VASI-22? The
AIM (2-1-2) only lists 2, 4, 6, 12, and 16 light configurations.
The AIM's tell us the amount of light's in a configuration. In order for any airport utility such as ADE to select the proper light configuration it must be coded to do so.
A box is a light so if I have 2 rows and 1 box = 2 light configuration as per the AIM
As per the AIM you can only have a maximum of 6 lights on one side of a runway. To get 12 or 16 lights you have to use VASI32 or VASI33 on both sides the runway. VASI32 (3 rows + 2 lights = 6 lights) on one side and 6 on the other side = AIM 12 lights.
The AIM allows a 16 light VASI configuration. As per the ADE list I use VASI33. The near row has 3 lights, middle row has 3 lights and the far row has 2 lights (total of 8). Place a VASI33 on both sides the runway and you have the AIM 16 light configuration
As per ADE and the SDK
VASI21 2 rows, 1 box/row
VASI22 2 rows, 2 boxes/row
VASI23 2 rows, 3 boxes/row
VASI31 3 rows, 1 box/row <<<<----- 3 lights no longer currrent per AIM but some airports still have them
VASI32 3 rows, 2 boxes/row
VASI33 3 rows, 3 boxes/row = 8 lights NOT 9 (far row has only two boxes, 8 light system)