I thought you might be interested in looking at Quick question: Are there NPC helicopters flying around in vanilla Dayz mod?.
https://forums.dayz.com/topic/224506-quick-question-are-there-npc-helicopters-flying-around-in-vanilla-dayz-mod/?do=findComment&comment=2257412
× Pasted as rich text. Restore formatting
Only 75 emoji are allowed.
× Your link has been automatically embedded. Display as a link instead
× Your previous content has been restored. Clear editor
× You cannot paste images directly. Upload or insert images from URL.