Taxiing down the tarmac, a jetliner abruptly stopped, turned around and returned to the gate. After an hour long wait, it finally took off. A concerned passenger asked the flight attendant, "What was the problem?"
"The pilot was bothered by a noise he heard in the engine," he explained.
"So it took an hour to fix the problem?" she asked.
"No," he replied, "It took us an hour to find a new pilot."