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1 1 (June 24, 2021)

handle is hein.crs/govedus0001 and id is 1 raw text is: Congressional
~.Research Service
Air Force Tanker Strategy Changes
Updated June 24, 2021
As discussed in the CRS report Air Force KC-46A Pegasus Tanker, the Air Force is in the process of
replacing its fleet of 396 KC-135 Stratotanker refueling aircraft, built in the 1950s and 60s, and 59 KC-10
Extenders, which entered service in 1981. Recent announcements indicate that the planned replacement
program is changing significantly from its original form, which Congress may consider in evaluating the
FY2022 defense budget requests.
The Air Force originally envisaged replacing the current tanker fleet in three stages.
 An initial acquisition of 179 new aircraft procured through the KC-X competition (won
by the Boeing KC-46A) would replace roughly one-third of the KC-135 fleet.
 A further 179 tankers were projected to be procured in a second solicitation called KC-Y;
initially projected as anew competition based on what aircraft were available at the time,
it was subsequently recast as a continuation of KC-46Aprocurement.
  A third program, KC-Z, was to be a replacement for the KC-10 fleet, a larger tanker than
the KC-46. Subsequently, the Air Force dropped plans for the KC-Z, envisioning it
instead as a third tranche of KC-46s.
However, it now appears that tanker procurement plans have changed in at least two ways.
One is that the KC-Y program is to be a full and open competition rather than a follow-on KC-46
contract. The Air Force released a sources sought notice on June 16, 2021, seeking a commercial
derivative tanker aircraft. This would seem to limit the field to the KC-46 and the Airbus A330 Multi-
Role Tanker Transport. An earlier version of the A330 tanker lost to Boeing after three rounds of a
protracted and controversial KC-X competition.
The Air Force is referring to this prospective procurement as a Bridge Tanker, to fill in between the
current KC-X and future KC-Z; it is not clear how or whether that nomenclature distinguishes the
program from the already-scheduled KC-Y The service projects issuing a formal request for proposals for
the Bridge Tanker by the end of calendar 2022.
In another change, the Air Force view of KC-Z has been evolving for some time, and the Bridge Tanker
sources sought announcement recast KC-Z as an Advanced Air Refueling Tanker, albeit without further
detail. This follows recent remarks by service leaders indicating an interest in focusing the former KC-Z
Congressional Research Service
https://crsreports.congress.gov
IN11537
CRS INSIGHT
Prepared for Membersand
Committeesof Congress

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