German Chancellor Angela Merkel's flight was delayed by several hours early Tuesday morning after the Iranian government decided at the last moment to deny permission for the aircraft to fly through its airspace, reports said.
The Cessna 172 Skyhawk is one of the most successful general aviation airplanes worldwide, used extensively for flight training and recreational flying.
The Boeing Company on Wednesday announced a deal to market passenger seats on flights to the International Space Station aboard Boeing CST-100 spacecraft.