(E) Aircraft Electronic Systems 

Rating Designate: 

M1: non-turbojet aircraft meeting standard 522, 523, 523-VLS, 527, 549 and equivalent foreign design standards

M2: all aircraft not included in M1, except balloons

Rating Designate:

M1: non-turbojet aircraft meeting Standard 522, 523, 523-VLS, 527, 549 and equivalent foreign design standards. 

Rating Designate:

M2: all aircraft not included in M1, except balloons.