A Look At Lockheed Martin’s ‘CATBird’ Boeing 737 Testbed

It has been more than 17 years since the first flight of the Lockheed Martin CATBird. The aircraft in question is a highly modified Boeing 737-330 designed as a testbed aircraft for Lockheed Martin. The ICAO-designated callsign CATBird refers to the Cooperative Avionics Test Bed.