The 416th Flight Test Squadron is operating KC-135R in a grey/white/black color scheme. The aircraft is designated NKC-135R. In the US aircraft type designation system, the N is used for test. When the N is attached to the type designation, the concerned aircraft is permanently modified for flight test. So wiring, systems, avionica, aerodynamics, cockpit and so on, could be modified.
This photo is copyright © Stephan de Bruijn, and may not be used or published in any way without permission.
It was added on 2 November 2019, and has since been viewed 2893 times.
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