In service with for 49 years, first as an airliner, then as a flying engine testbed, the four-engine jumbo was the world's oldest active 747.
GE's former 747 flying engine testbed makes its final landing on Nov. 15, in Tucson, Ariz., where it will become part of the collection of the Pima Air & Space Museum. It was the oldest active 747, having served 21 years with Pan Am before being acquired by the engine maker, and flying for another 24.
