"1989Z"^^ . "1.8144e+07"^^ . . "R-11 Refueling Vehicle"@en . . . "The R-11 Refueler replaced the R-9 Refueler as the primary mobile refueling vehicle for The United States Air Force. There are currently three models of the R-11. The first generation was delivered in 1989 to the Air Force by the Oshkosh Truck Corporation and is commonly referred to as the Oshkosh R-11. The Air Force purchased 1,250 Oshkosh R-11s between 1987 and 1991. Deliveries of the 2nd generation R-11 began in 1994."@en . .