I am able to damage the regular Patrol Heli without issue. It's only the HS ones that I have a problem with. Here's my settings related to it.
{
"name": "default",
"enabled": true,
"defaultAllowDamage": false,
"flags": "HumanNPCDamage, LockedBoxesImmortal, LockedDoorsImmortal, PlayerSamSitesIgnorePlayers, TrapsIgnorePlayers, TurretsIgnorePlayers",
"rules": [
"anything can hurt dispensers",
"anything can hurt resources",
"anything can hurt barricades",
"anything can hurt traps",
"anything can hurt heli",
"anything can hurt npcs",
"anything can hurt players",
"nothing can hurt ch47",
"nothing can hurt cars",
"nothing can hurt mini",
"nothing can hurt snowmobiles",
"nothing can hurt ridablehorses",
"cars cannot hurt anything",
"mini cannot hurt anything",
"ch47 cannot hurt anything",
"scrapheli cannot hurt anything",
"players cannot hurt players",
"players cannot hurt traps",
"guards cannot hurt players",
"fire cannot hurt players",
"traps cannot hurt players",
"highwalls cannot hurt players",
"barricades cannot hurt players",
"barricades2 cannot hurt players",
"mini cannot hurt mini",
"npcs can hurt players",
"junkyard cannot hurt anything",
"junkyard can hurt cars",
"players cannot hurt tugboats",
"heliturrets cannot hurt players"
]
}
],
{
"name": "heli",
"members": "PatrolHelicopter",
"exclusions": ""
},
I don't see anything that would exclude damage to a custom patrol heli.