Investigating Optimal Replacement of Aging Air Force Systems

Investigating Optimal Replacement of Aging Air Force Systems

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As part of a continuing project on aging aircraft and the replacement-or-repair decision, the authors develop a parsimonious model of the decision and apply it to the U.S. Air Force’s C-21A transport and KC-135 tanker aircraft. They find that, for the C-21A, it probably would be appropriate to undertake a 20,000 flight hour system and component replacement schedule-prescribed renovation in the 2012 timeframe, but the aircraft should be retired around 2020. For the KC-135 tanker, it would be optimal to replace the KC-135 before the end of the decade.