ENGINE CHANGE / Boeing 777-200ER Austrian Airlines (OE-LPD). A #B777 engine remains installed for an average of 30,000 flight hours until it is overhauled. With a thrust of 94,000 lb, the approximately 8.5-ton engine (GE90-90B) is one of the world's largest and most powerful engines. The engine change on the OE-LPD was carried out in 48 hours and 450 man hours by Austrian Airlines Technik. Video: Austrian Airlines. | Aeronews

A team of mechanics are in the process of removing the jet engines from a 747. It's painstaking, careful work — one mistake can lead to irreparable damage to the costly engines. 🎥Inside Mighty Machines | Smithsonian Channel Aviation Nation