A Turkish KC-135R aerial refueling tanker has returned home after completing the modifications to its flight deck.
Alan Wilson from Stilton, Peterborough, Cambs, UK, CC BY-SA 2.0, via Wikimedia Commons
The Block 45 upgrade replaces old displays, radio altimeter, computer module, autopilot and flight director with new ones. Around 63 of these parts are of high-maintenance or obsolete.
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