Hollywood star John Travolta was forced to make an emergency landing in Ireland on Monday while piloting his private Boeing 707 from Germany to New York. The actor, who was flying back to the USA after promoting his new movie Wild Hogs in Germany, landed safely at Shannon Airport after his Boeing 707-138B suffered "technical difficulties", thought to be engine-related. He was said to be unhurt but shaken by the dramatic incident. The 53-year-old, the only private individual to own a Boeing 707, serial number N707JT, hired another aircraft and completed the journey while the 707 was grounded for repairs....