Ok after ALOT of frustration waiting for someone to get a helicopter (about 30 matches of straight camping with not one shot fired at anyone). Someone finally got one on Broadcast and
I've come to the conclusion that the helicopter does not count towards your accuracy.
I tried it on my practice account with an AK-47, the accuracy beforehand was 14.75% but after shooting the helicopter it dropped to 14.50%. The hit detection must just come up to let you know you've hit the heli, very deceiving if you ask me.
Case closed

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