Figure 4-7. IND-350

CHAPTER FOUR

T-34C INSTRUMENTS CHG 1

The IND350 shows the aircraft's actual course of flight in relation to a selected course. The

selected course is set with the OBS knob. The course deviation indicator (vertical bar) will be

centered if the aircraft is actually on the selected course. For an off course condition the bar will be

displaced to one side or the other. The TOFROM indicator shows whether the selected course, if

flown, will take you TO or FROM the station. The VOR/TACAN switch enables the pilot to select

VOR or TACAN information for display on the CDI. The IND350 provides an immediate and

simple presentation of course deviation and is an excellent reference for maintaining desired course.

Its use is highly recommended for tracking along airways or on approaches. If both the IND350

and the RMI are operating and a course discrepancy is noted between them, the RMI indication is

more reliable. (See Figure 47 for an illustration of the IND350)

Figure 4-7 IND-350

With a VOR frequency selected in the VOR and the IND350 selected to the "VOR" position, each

"mark" indicates 2 of deviation with a full scale deflection of + 10 from CDI centerline. With an

ILS/Localizer frequency selected in the VOR and the IND350 selected to the "VOR" position, each

"mark" indicates 1/2 of deviation with a full scale deflection of + 2 from CDI centerline.

NOTE

If there is a discrepancy between the RMI and CDI needles, rely on

the RMI needle.

4-10 INTRODUCTION TO RADIO INSTRUMENTS