This document contains two U.S. Coast Guard self-study pamphlets that provide training in helicopter flight preparation and avionics duties. Each pamphlet consists of a number of lessons that include objectives, information illustrated with line drawings and/or photographs, and self-quizzes with answers. The avionics course covers the following topics: helicopter systems, engine and rotor systems, helicopter transmission and various systems, flight systems, other systems, communication systems, navigation systems, Loran C navigator, flight director systems, electronic flight aids, and avionics crew members' duties. The flight preparation course covers flight preparation, emergencies and extreme environmental condition operations, rescue procedures, and the high-intensity searchlight system. (KC)