Can you fix HelicopterReviwal mod compability?
Author removed equipment_grid = "heli-equipment-grid" record from base entity, it ok base vehicle don't have grid. But now your mod update nothing.

Hmm, helicopter compatibility may not be possible for the moment. Not sure if this is how it's always worked, or if this was a recent Factorio change, but the way the mod is coded, placing the helicopter item from your inventory appears to spawn a brand new helicopter, even if it had a grid full of equipment before.

When you mine up the helicopter with a grid full of equipment, you get the helicopter item, and you can see inside its equipment grid, but when you place it back down, the grid becomes completely empty, and any equipment inside will be deleted. Unlike most other vehicles in the game, the entity and item are not explicitly linked for some reason (something to do with the way it "lifts off" from the ground, requires the creation of several different entities).

This is likely the reason the mod author removed that setting. Even HelicopterRecolored's equipment grid setting does nothing, so I can only assume this functionality is broken and impossible to fix from my end. I'll remove it from the description for now.

Oh, looks like bad implementation from first line. Thank you for your answer. In that case, removing it from the list of compatible mods looks like the most correct solution.