Hey :-) When you call a heli above you with /callheli <name> it doesn't spawn any heli crates but when you call a heli with /callheli on it's own and then bring it to your location using /helidest <name> that one has the crates. Is there anyway to get the one that spawns above you to include the loot tables?
How to add loot to heli called above the player?
The player calling the helicopter needs to have the "helicontrol.dropcrates" permission, has this been granted?