The driver, operator or attendant of any fuel handling device shall be with the vehicle at all times while the vehicle is fueling or refueling an aircraft. Such driver, operator or attendant shall serve no more than two vehicles or aircraft simultaneously under fuel servicing and shall be within 75 feet of any operation under the driver, operator, or attendant’s surveillance.
(Res. No. 149 75-76 (part), Res. No. 68 86-87 §1 (part), Res. No. 02 03-04)