if we can mention distractions in the air, there was an airliner allowed to crash due to the crew becoming distracted by the overhead air vent banging thru not being locked and a small plane crashing due to distraction by a seatbelt end, locked in the door and banging against the outsede in the wind
also that burnt out lightglobe causing the tristar crash
the old rule was if anything unusual happens, keep flying the plane