T-45C TS, ADV, & IUT RIFP-01
Introduction to Radio Instruments
VIII. Correcting for wind drift using TACAN/VOR/VOR
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DME 2.7.5.1.8.1
INTRODUCTION TO RADIO
INSTRUMENTS
NOTE: To compensate for wind, use a wind
corrected heading (WCH) that stops drift from your
* SID procedures
course. The difference between WCH and desired
* Radial intercept procedures
course is called "crab angle."
* Indications of station passage
* TACAN/VOR DME arc
A.
Determining WCH and crab angle
procedures
* Voice procedures
1.
Establish radial track on course (CDI
* Ground speed computation
centered)
procedures
* Wind drift correction
2.
Check for drift from course due to wind
procedures
* Pt-to-Pt procedures
3.
Turn the aircraft sufficiently back into the
* Direct to a NAVAID
wind to reintercept the course (CDI
* VOR-TACAN/VOR DME
centered)
holding procedures
4.
Reduce intercept heading to maintain track
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on course (enough crab angle to keep CDI
centered)
COMMON ERROR: Making too small a
correction to return to the desired course.
COMMON ERROR: Not applying a correction
into wind to slow and/or stop drift when first
WIND DRIFT CORRECTION
detected to minimize drift from course.
PROCEDURE - TRACKING
B.
Determine WCH with the ground track marker
1.
Note location of ground track marker
2.
Turn to a heading that moves the ground
track marker directly over the end of the
course line
3.
Adjust heading to keep the ground track
marker over the course line and maintain
track on course
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