Langley AFB Heritage Flight 2019.
C-141B Refueling Tests (1978)
During the late 1970's the United States Air Force lengthened the majority of their Lockheed "C-141 Starlifter" C-141A's to increase cargo capacity, designating the modified aircraft the C-141B. Also added during the conversions was a boom receptacle for inflight refueling. This film shows the testing phase of the aerial refuelling modifications.