Clearance for an Approach While in TACAN Holding

CHAPTER SIX

T-34C INSTRUMENTS

iii.

Divide the outermost leg length by the length of the holding pattern.

15 3 = 5 degrees. This is the correction factor for every radial you are off

course.

For example: You just completed your outbound leg of the nowind orbit at 15 DME.

During your turn onto the holding radial, you determine you are 4 off course. Use the

normal tailradialwind method to determine wind direction.

iv.

Apply the wind correction on your correction orbit: 4 error x 5 correction

factor = 20 crab angle into the wind on the outbound leg of the correction

orbit. Remember to use half (10) the crab angle on the inbound leg.

Figure 629 TACAN Holding Fix

The direction of TACAN holding is relative to the holding fix - NOT the station.

Common Errors

Holding on the wrong side of the DME fix.

Using an insufficient intercept angle to acquire the inbound course.

618.

CLEARANCE FOR AN APPROACH WHILE IN TACAN HOLDING

If established in a PUBLISHED TACAN HOLDING PATTERN and subsequently cleared for

the approach, you may commence the approach from within the holding pattern.

6-48 RADIO INSTRUMENT FLIGHT PROCEDURES