17.3.7. Air Transport of Freight
Air transport of freight is used to provide units freight
either through an existing airfield or by air parachute
drop. When air freight is air transported to a hex,
if there is no depot in the hex, a temporary depot is
created. Whether a temporary depot or an already
existing depot receives the air transported freight, the
instant an air transported shipment arrives in a hex,
a special distribution takes places of freight from the
depot in the hex. This special distribution is of supplies,
fuel and ammo only (no replacements) and goes
to units in the hex or adjacent to the hex. If there is
already freight in the depot, then some of this freight
may be distributed out along with the freight that was
dropped.
I had already noticed that air supply seemed like an extremely effective way to 'top off' mech units fuel (at the cost of admin points if you're devoting LBs to the task).
If it is possible to pull the AI logistics phase save from the server for the game between myself and Bomazz I think that this can be easily tested.
Bomazz made a turn 3 landing in the toe and I used air supply from one of my Ju-88 groups to top off a PzG Div (with adjacent PzG Bdes) in a clear hex. The battle screen said the air supply dropped 0 tons of supplies, but when I looked at the units they were in the 90s for supplies/fuel/ammo. I saw a red line drawn from Reggio Calabria (where there is a depot) to the hex I air supplied during the resolution.
I think that if the air supply temporary depot is connected to the supply chain what actually happens is that the supply phase runs for the units in the air supply target hex (and adjacent hexes) from the supply grid, not just the temporary depot in the hex.
I want to be able to use air supply (it's a critical element in some strategies), but this seems broken and overpowered. Is it supposed to be a 1 admin point cost 'HQ build up'? 5 admin points a turn I think would allow for supply shenanigans from the Axis that will defeat a lot of the effort to cripple the supply network.

