How it was explained to me - airplane mode does not allow you to connect to the game and therefore not post any damage. If your guild has a 0 damage for 24 hour policy, he can start the raid before the 24 hours are up and not violate that rule. In airplane mode, he can complete phases and go as far as he can, and the game will not post his score. This means that he could theoretically solo the raid before the 24 hours are up, not post because he is in airplane mode, and everybody else starts in phase 1. His number one advantage is that he can have multiple tries at soloing the raid without violating the 0/24 rule. Another advantage that he might have if he can solo the raid is if he does and then posts his score right after the 24 hour, then the raid is over and the results timer starts. This doesn't allow anyone else to get in the raid and those that are in it only have one chance and an hour to post their best score. However, you state that he is posting his damage after the raid is over, so he doesn't seem to be trying to use that second advantage.
