I apologize if this is the wrong place to ask about this but I haven't had it happen outside the campaign. Sorry for the lack of screen shot but they didn't save correctly for some reason.
On Mission 1, which I completed last night but am replaying for a better score, we arrive at New York to marshal and as we are circling, I encounter a drop in the Utility hydraulic pressure to ~800 psi. This is accompanied by a blinking WHEELS indicator and a CHECK HYD GUAGE warning light. I also noticed that the flaps and slats indicators were switching back and forth constantly. External view shows landing gear doors fully closed, slats out, and flaps up. Moving the flap switch has no effect. The manual tells me what everything means but not if it can be remedied. There don't seem to be any binds that I could have hit accidentally.
I reloaded the mission and ran into the same problem, this time, the pressure dropped and returned twice before dropping out again. Again, my apologies if this is something that is obviously fixed, but I've had the Phantom since launch and this is a totally new issue for me.
Incredible campaign otherwise though!