Hi @RustyKnutts,
Both the Apache and the Huey are fully functional. The signs cannot be removed even with ent kill as they are a part of the vehicle and its system however this is a feature that is on the list to add in the future for individual players to change the modules of their vehicles. The Huey along with all other vehicles that use manual firing needs to have its ammunition (any rifle ammo or rockets excluding the homing missile) loaded into the storage boxes. The Huey's minigun has a 2-second charge time just like the vanilla minigun meaning it will not fire for the first 2 seconds of holding the fire button (LMB). The UI will display the data relating to those numbers relating to cooldown, ammo count, ammo type, etc. The Apache has to have all weapons and ammo loaded in the turrets individually. By default, the Apache target mode is set to manual meaning that the two side-mounted HMLMGs will fire instead of the turrets which will be in a passive state. To change the targeting mode you can, as per the on-screen instructions, change the targeting mode with your RELOAD key (default: R) to the desired setting.
All gunship vehicles have their instructions displayed on screen, for example, the Huey's fire controls are displayed right below the main panel outlining the use of LMB for firing machine guns and RMB for firing rockets. The same goes for the Apache which has its control instructions below the main panel as well displaying that hitting your RELOAD key will change the targeting profile and LMB will fire the manual machine guns when in manual targeting mode.
If you have any other issues let me know,
TGWA