BY ORDER OF THE SECRETARY OF THE AIR FORCE AIR FORCE ...

AFMAN 11-217V1 3 JANUARY 2005 81
remains fixed relative to the compass card. When the aircraft is on the selected
heading, the heading marker is aligned beneath the upper lubber line.
5.2.4.5. Bearing Pointers. The bearing pointers indicate the ADF, VOR, or TACAN
magnetic bearing to the selected navigation station. Placards on the instrument or
near a selector switch are used in most aircraft to identify the bearing pointer display.
5.2.4.5.1. NOTE: The bearing pointers do not function in relation to ILS signals.
5.2.4.6. Malfunctions. If there is a malfunction in the compass system or compass
card, an ADF bearing pointer continues to point to the station and displays relative
bearing only.
5.2.4.7. TACAN/VOR Pointers. With a malfunction in the compass system or
compass card, TACAN/VOR pointers may continue to indicate proper magnetic
bearings. Until verified by radar or other navigation equipment, consider this bearing
information unreliable.
5.3. Flight Director. The flight director provides the pilot with displays of pitch and bank
attitudes and the navigation situation of the aircraft. The flight director when combined with
round dial performance instruments is termed the flight director system (FDS). When the
flight director is combined with vertical scale instruments it is termed the integrated flight
instrument system (IFIS). The three components of the flight director of major interest are
the attitude director indicator (ADI), the horizontal situation indicator (HSI), and the flight
director computer.
Figure 5.9. Typical Flight Director.