Figure 6 - P-8010105

INSTRUMENT NAVIGATION

Figure 6

We now equate the larger of the two DME's with which we are working to the outer radius of

the RMI card. The other, or smaller DME, will be somewhere proportionally between the outer

edge of the RMI card and the center (TACAN station).

Example:

Your position: 130 R/20 DME

Desired position: 200 R/40 DME

Remember now, your position is on the 130R; therefore, it lies somewhere along the tail of

the #2 needle. Now note which of the two DME's is largest--40. Therefore, 40 DME is the

value assigned to the outer edge of the card. Our DME is 20, so it must be halfway between the

compass edge and the RMI center.

Figure 7

TACAN POINT-TO-POINT 5-7