I just thought of another one!
My first ever flight in a GA plane with my dad (this was only about two months ago...he's flown in the back of my plane on pt 121 flights before, but this was our first time ever in GA).
We went out to KCPK to pick up the DA-40XLS. The plan was to launch and fly around a bit so he could get a feel for the controls, then head up to KORF to pick up my mom and wife for a scenic flight around Norfolk and down to FFA. The weather is absolutely perfect and there's just enough daylight left. Of course the plane is at less than 1/4 tank, so we settle in for the long taxi to the self serve pumps. Start it up, let my dad taxi a bit, then shut down in front of the tank.
Put in full tanks, then shove the plane back onto the ramp. Settled in once again, I go through the engine start checklist. As a side note, I've always hated started fuel injected engines. Prime, starter, mixture, bump the throttle, cough, sputter, nothing. After three tries it gets close every time, but no dice. Now I'm getting a low volt caution. I give it a few minutes. My dad asks questions about the plane and the airport. Try it again. Three more times, it gets close, but no dice. Low volt warning.
I'm ****ed. Uber ****ed, if you will. My dad doesn't seem to care, it's a nice enough day to sit outside. Fortunately my friend (and the CFI that checked me out in the plane) is close to the airport, so I decide to wait for him.
Twenty minutes later, the CFI hop in next to me and takes a crack at it. No dice. Twice more, no luck. I FEEL RIGHTEOUS!
Then the CFI notices something. This little hidden circuit breaker (and by "little hidden" I mean one of the ones right in front of my face) had popped during the very first engine start. With this breaker out, it wasn't letting the battery provide full effort to the starter, which is why we couldn't get it to catch.
Apparently this has happened before and they thought they had fixed the problem...they hadn't. By the time we FINALLY got the plane in the air, we had just enough time to head up to ORF and pick up the women (who were wondering where the hell we were).
It ended up being a nice flight, but good lord what an embarassing PITA that was!