Protective devices are provided subjacent to the filler port within an aircraft's wing fuel tank so as to protect the lower wing skin from being struck by a nozzle associated with refueling equipment. When inserted into the filler port, the nozzle is brought into contact with the protective device which serves to deflect the nozzle in laterally (e.g., in an inboard direction) to thereby prevent the nozzle from striking the lower wing skin. Thus, when initially inserted into the filler port in a generally perpendicular orientation relative to a horizontal plane, the terminal end of the nozzle will contact with the arcuately concave inner surface of the device such that continued insertion of the nozzle into the filler port will cause the nozzle to assume an angularly canted condition in an inboard direction (i.e., a direction toward the aircraft's fuselage).