The aerodynamic impact of the refueling cone sleeve on measurement accuracy of the atmospheric data for the receiver aircraft is studied numerically through computational fluid dynamics (CFD) simulations in this paper. To simplify the calculation, the refueling cone sleeve is placed at different stations relative to the receiver aircraft. The numerical results obtained by considering the influence of the refueling cone sleeve on the atmospheric data measurement are compared quantitatively with those without the refueling cone sleeve. It is shown that the local angle of attach can be increased by 80% which may have a significant effect on the accuracy of atmospheric data measurement precision of the receiver aircraft. This may lead to a jump in the cockpit display of atmospheric parameters and trigger the flight control system to report atmospheric parameter faults. This result can be taken as a reference for the training of air refueling pilots and the design of the logic of atmospheric parameter fault reporting by the flight control system.