Officer technical specialists in the field of avionics. They serve as technical advisors concerning the uses, capabilities, limitations, and reliability of avionics equipment and test equipment; supervise and direct practices and procedures for servicing, testing, and maintaining aviation electrical, electronic, instrument, and test equipment. An officer of the Naval Reserve on active duty in the FTS Program (Full Time Support) [Includes officers of the FTS Program rotated to other than FTS billets].