I was playing this game and I found what I think is a bug. So I was making an aircraft carrier and when I piloted a helicopter to observe it while it is an AI, it randomly disappears. I repeat again and again and it happens. I tried with other AI planes and it happens. I tried restarting the game but it still happens. After it disappears, I checked the Spawn AI section, and it showed something like: AI Planes Spawned: 0. I really hope you fix this soon. This is from version 1.7.4. I play on the 2015 iPad Pro with 128 GB storage.
I have had planes and vehicles (that I have spawned) that just fly (at full throttle) into a wall, I have had the ai on hostile and they run away from me XD @DerekSP @MCPEMASTERMIND
raise the cockpit that might help but it's still just derp olé SP AI
The AI is so bad that as far as we're concerned it's not even implemented.
It needs a serious overhaul.
What may be happening in your case, is that when the carrier touches water, the game thinks it crashlanded, so it automatically deletes it.