The stuff I've had to fly sometimes made me think out loud; does anything at all need to be in working condition for a flight?
Radios that are terrible, inop landing, inop taxi, inop bcn, engines that must be
kept low on oil (4qts) as otherwise it spits it out, inop flaps, inop parking brake, inop nav, oil service lid locking mechanism inop and taped down with gaffer tape, etc.
It's amazing. I can't wait to own my own aircraft soon.