A passenger jet is heading down the runway, when all of a sudden it abruptly comes to a stop, turns around and returns to the gate. Eventually, after an hour-long wait, the flight finally takes off.

A concerned passenger asks a flight attendant, "What was the problem?"

"The pilot was bothered by a noise he heard in the engine," explained the flight attendant.

"I hope it?s all sorted now," replied the nervous passenger.

"Oh yes, it?s fine now, sir. It just took us a while to find a new pilot."