Northrop Grummann have been test-flying a 1970-vintage Gulfstream 2 aircraft since 2012, as a test-bed for the MFAS radar system. The multi-function active sensor is to be used on the Navy's Global Hawk UAS, to be known as the MQ-4C. The MQ-4C is expected to enter service in late 2015. Originally flight-tested from Palmdale, CA, the Gulf 2 was recently seen at nearby Lancaster's Fox Field Airport.
Photo by Nigel Howarth