The deadliest accident in aviation history occurred in 1977, when two Boeing 747 jumbo jets collided on a foggy runway on the Spanish island of Tenerife, killing 583 of the 644 people on board the planes. Spanish investigators blamed the captain of the KLM 747 for taking off without clearance from air traffic controllers.

After two leaders were impeached in as many weeks, a deadly plane crash has prompted South Korea’s feuding political camps to temporarily halt a protracted power struggle.

An air safety expert says lives could have been saved if the "obstruction" was not there.