Board Thread:Theories and Speculation/@comment-27924662-20160817160245/@comment-25122992-20160819135718

1. As I said earlier, wings are the key part of Susanoo that allowed Sasuke's version to fly, regardless if they are granted by the Rinnegan or not. Also, there's a fact I remebered that during the fight against Kaguya Sasuke couldn't fly on his own and was forced to rely on Naruto's abilities (either cling to him floating via SPS ability or using his TSBs as a footing), but if his Susanoo ribcage is enough for him to fly, then why didn't he use it back then? It'd be reasonable for him not to constantly use the PS for flight because of it consuming a lot of chakra, but I don't think that basic Susanoo ribcage takes too much chakra to maintain.

2. Madara technically has SPC as well (since he possessed the Rinnegan), but still his Susanoo didn't get its secondary arms turned into the proper wings. Either his own version didn't possess them at all (since Susanoo varies between the different users) or he didn't demonstrate its flying abilites (I read the PS jutsu page in the Fourth Databook and there it was stated that PS armor can be shaped/turned into wings for the flight, i.e. it's presumably a common ability for all the users).