Business Insider on MSN

We toured a specially modified Boeing 747 used as a 'flying laboratory' to test new jet engines. See inside.

GE Aerospace is building the world's largest jet engine for Boeing's new 777X, and it's using a giant 747 to test it. We toured the unique plane.
WLWT

GE Aerospace’s 747 flight test plane visits Cincinnati

GE Aerospace in Cincinnati is using a 747 aircraft as a flying laboratory to test jet engines under extreme conditions, pushing new designs to their limits to ensure safety and performance. “We are ...