Figure 4-18 Headwind and Tailwind

T-6A INSTRUMENT NAVIGATION

CHAPTER FOUR

indicated by the need for an abnormally large drift correction. A high headwind or tailwind

would be indicated by a GS that differs significantly from predicted values.

090 R

"B"

"A"

Figure 4-18 Headwind and Tailwind

Another problem is encountered if we have a strong headwind component when inbound to the

holding fix. For the first correction orbit, a minimum time of 30 seconds outbound will be used.

In any event, it is essential you clear the cone of confusion in order to fix your position relative

to the holding fix. If, after repeated correction orbits, you determine you need to eliminate

outbound timing entirely, you have an extremely strong headwind. In this case, your inbound

timing can exceed 1 or 1 1/2 minutes, depending on your altitude.

NOTE

If wind speed and its angular relationship to the holding pattern make

holding difficult, consider requesting a different pattern more suitably

oriented with respect to the wind.

414. CLEARANCE FOR AN APPROACH WHILE IN HOLDING

If established in a published holding pattern and subsequently cleared for the approach, you may

commence the approach from within the holding pattern. It is very important to listen to your

approach clearance once established in holding. Listed below are possible types of clearances

you may receive:

"KATT 603, Pensacola Approach, at the completion of this turn in holding you are cleared

for the RNAV 1 approach."

In this case, you would complete this turn in holding and commence the approach at the IAF.

Listen for any altitude restrictions from ATC.

"KATT 603, Pensacola Approach, you are cleared for the RNAV 1 approach."

INSTRUMENT NAVIGATION

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