Section 339.1 - Authority, purpose, and scope(a)Authority. This part is issued pursuant to 12 U.S.C. 1462a , 1463 , 1464 , 1819 (Tenth), 5412(b)(2)(C) and 42 U.S.C. 4012a , 4104a , 4104b , 4106 , and 4128 .(b)Purpose. The purpose of this part is to implement the requirements of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973, as amended (42 U.S.C. 4001-4129 ) .(c)Scope. This part, except for §§ 339.6 and 339.8 , applies to loans secured by buildings or mobile homes located or to be located in areas determined by the Administrator of the Federal Emergency Management Agency to have special flood hazards. Sections 339.6 and 339.8 apply to loans secured by buildings or mobile homes, regardless of location.