Mine was also my scariest flying experience. I was flying from Sochi, Russia to St. Petersburg on what was probably some piece of junk Tupolev on always scary Aeroflot. Our first delay was because the pilot couldn't find the keys to the cabin door. Yeah, the door actually took a regular key. After we all boarded, they couldn't get the cabin door to latch shut. They called out a mechanic who proceeded to pound and reshape the door frame with a hammer, alternatively trying to pull it closed until it would latch. Once he was satisfied, he gave us the clearance to take off. I was sitting across from that door. My seatbelt was on extra tight that entire flight.