The MD200-306 is a panel-mounted Course Deviation
Indicator (CDI) with rectilinear meter movements and contains
integral GPS, NAV, and Back Course (BC) annunciators. The MD200-306
has a VOR/GPS needle, TO/FROM indicator, and NAV warning flag,
plus a GS needle and flag. The MD200-306 contains an integral
resolver for OBS function. The MD200-306 unit also features
anti-reflective lenses and is backlit.