The Convair UC-880 was the only 880-22M converted for use by the U.S. Navy.
UC-880 was a former FAA (Federal Aviation Administration) training aircraft purchased in 1961 (airframe #22-7-3-55). Flight Systems purchased the FAA 880-22M in 1980, for use at Naval Test Center-Patuxent River, it was used to test refueling of F-14D and F/A-18 aircraft, and other aircraft used during cruise missile testing.
The UC-880 wore at least two different paint schemes.

UC-880 during an ‘open house’ at the Patuxent River Naval Air Test Center, 16MAY1987. Photo by Don S. Montgomery.

Refueling F/A-18EPE (Enhanced Performance Engines) Hornet. USN photo by Vernon Pugh, dated November 1991.

The only Convair UC-880 aircraft refuels the F-14D Tomcat prototype, August 1992. USN photo by Vernon Pugh.
The UC-880 was written-off after a cargo hold explosive decompression test, in 1995.
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