Jeppesen CR4 CR3 CR6 Wind Drift, Headwind GS Calculation

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Note: winds given in T° not M°
So convert T winds into M

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Determine How Much To Adjust Heading Due To Crosswinds

Determine How Much To Adjust Heading Due To Crosswinds (Above)

Get wind forecast and set wind angle on the outer green scale to the wind angle. Eg: if it was 090, set 90 on the outer green scale to the top of the dial at the black TAS triangle (0:40-1:25)
Then go down the scale from there and circle wind speed eg if it was 20 kt, you would go down the row from TAS 60, 50, 40 , 30 and then circle 20 (1:10 to 2:00)
Turn outer green dial so that intended heading is now at the top black TAS triangle (2:35 to 3:15)
This now displays our wind relative to our heading and we can read off if it is a head wind (above the x axis) tailwind (below the x axis) a wind from the right (right of y axis) a wind from the left (left of the y axis) (3:00 to 3:35)
Then go to outer scale and read crosswind eg if its 10kt crosswind go to the outer scale 6° (3:35 to 5:05)
Read off the next scale in how many degrees you need to adjust. Eg: at 100kt TAS for 10kt of crosswind on the outer scale we would need to adjust 6° of heading. (4:20 to End)
Ground speed is simple maths, deduct headwind component from TAS.

Timestamps
0:00 Introduction on How to Use the Jeppesen CR4 on Calculating The Wind Drift, Headwind, and Groundspeed
0:54 How to Set Your Aircraft Speed
1:05 Set the Green Scale
1:20 The Headwind, Tailwind, Wind from the Right, Wind from the Left
1:35 Put a Circle with the Center of the Circle
2:28 How to Put the Heading You Want to Head
2:45 Where to Locate the Actual Wind
2:56 How to Determine the Headwind
3:10 How to Calculate the Groundspeed
3:26 Where to Locate the Tailwind
3:43 How Much Do You Need To Adjust For the Wind That's Coming From the Right
4:20 Which Way Do you Need to Adjust
4:52 Outro
5:16 End of Video

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