Episode 140: LTU230/ LT540 (Minisode series episode 3)

On October 4, 2007 an LTU Airbus A330 is doing a routine flight when they have to return to Dosseldorf. On November 20, 1974 A Lufthansa 747 is taking off out of Narobi when it crashes. What caused these German based airlines to have so many problems?