Figure 39

INSTRUMENT NAVIGATION

Figure 39

REVERSE SENSING

We have just covered the normal use of the IND-350. Now we will discuss a possible misuse

of the course deviation indicator (CDI) portion of this instrument.

The CDI will be centered whenever the aircraft is on the radial selected by the OBS, or on

the reciprocal of that radial. Keeping the above in mind, examine Figure 40 a and b, noting the

absence of a TO-FROM indication. Can you determine the position of the aircaft?

Figure 40

The answer, of course, is no! In both Figures 40a and 40b the aircraft could be either north

or south of the station.

RADIAL TRACKING AND COURSE CONTROL 3-31