Blizzard has just released a patch in Public Test Realm for Pharah which will allow here to stay up in the sky forever.
The patch will modify the fuel drain rate and rocket boost cooldown time which will result in her being able to fly forever. Players will not need to touch the ground to recharge too.
Of course, we don’t think that anybody would be doing that since Pharah flying in the sky forever will mean that she will be the easiest to take down. All you need is a Soldier 76 or McCree to get her off the map for the time being.
It would be interesting to see how this will change the way players play Pharah. Of course, the upgrade is just at its testing stage. It might not make it out to the full game just yet so take it with a pinch of salt.