Figure 3-1 Tracking

CHAPTER THREE

RADIO INSTRUMENTS

6. DRIFT CORRECTION ANGLE - the angle between the heading of an aircraft and the

desired course (slang: "crab angle").

For purposes of ATM navigation, a course can be thought of as a TACAN radial, a straight line

between two fixes (either during point-to-point navigation, or the course to fly for compliance

with a "present position direct" clearance), an arc, or a final approach course during a GCA

approach.

In summary, it is the student's responsibility to request headings, which will bracket the drift

correction angle in order to determine a drift correction heading which will cause the aircraft to

track on the desired course.

Exception: in the T-2C (not in the 2F101), once established on an arc, the student may request

the IP to "maintain the arc". In the 2F101, the student will navigate throughout all arcs.

Figure 3-1 Tracking

Inbound and outbound radial tracking procedures are essentially the same. The difference is

when tracking outbound, the course is the same as the radial, and when tracking inbound, the

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RADIO INSTRUMENTS