I witnessed this as well - Same server, same clan. I spawned into the server about three/four hours ago in complete darkness. I was running across the coast and found a spawned helicopter, completely fixed 100% and working. I did what anyone in my situation would: I got in and flew around. I told my buddies over in vent to get into the server, which they did. I proceeded to pick two up from the NE Airfield, then both of us went to save a friend who had just killed an 11th member at the NW Airfield. As we're flying towards it, I see a SECOND helicopter in the distance. It struck me as weird because I was under the impression that there was only one allowed per server. Nonetheless, we make it to the NW Airfield and I drop off the friendlies, then wait for about 5-10 minutes for them to revive my friend/loot/etc. I make my way back for a pickup - While I'm doing this, the second helicopter approaches us and we open fire and begin our aerial pursuit. It lasts for about 10-15 minutes of us just chasing the second helicopter around Chenarus; over Elektro and Cherno mostly. My gunners manage to kill one or two members... Eventually, their helicopter goes down. I must point out that while flying over Balota, I saw a THIRD helicopter at the airfield which was just about to take off after I passed. As we're about to circle Elektro for the 10th time, the server "crashes" mysteriously. The server resets in the daytime and I spawn just outside of Cherno. At this point, we set up sniping positions inside of Cherno and begin our attack on anyone that we see. I manage to kill one player in a blue van and another outside of the convenience store. Low and behold, every time my buds would kill one or two of the 11th members, the server would go down. That's my side of the story. I'll be seeing the 11th guys again, through my scope.