Delta, American, United and Southwest Airlines have discovered that unapproved jet engine parts with fake safety certificates have been installed inside their planes. The airline companies and the European Union Aviation Safety Agency have claimed that AOG Technics, a leading global aircraft support provider to the air transport industry, sold them the fake parts. The airlines stated that AOG Technics falsified the required airworthiness documents for the spare parts and mass-produced artificial safety certificates in order to sell its engine parts to them. Parts sold by the problematic company have been found in 126 engines across the airlines and several...