Compass Headings

CH: Column of the "Navigation Log" that provides a convenient way to obtain and list headings displayed by the aircraft's Compass during flight, calculated using the following heading-related information:

• TC: True Course: Intended direction of flight, as measured on a "Chart"
• WCA: Wind Correction Angle: Angular adjustment for wind
• Var.: Magnetic Variation: Difference between True North and Magnetic North
• Dev.: Compass Deviation: Caused by magnetic disturbances from electrical and metal components in the aircraft, as determined during calibration of the aircraft

Obtained from the following sources:

• "Aircraft's Documentation"
• "Chart"

Where:

• True North: Actual location of the North Pole
• Magnetic North: Compass reading of 360 Degrees

Task:

For each Individual Leg: Perform the following steps:

1. True Course: Obtain from the "Navigation Log," and enter as follows.
2. Wind Correction Angle: Perform the following sub-steps, to calculate:
   1. Obtain the Wind Direction & Velocity from the "Navigation Log."
   2. Calculate the Wind Correction Angle, using the following:
      • True Course (from Step 1)
      • Your E6-B

      and enter the result as follows.
3. True Heading: Calculate by adding/subtracting the Wind Correction Angle (from Step 2), from the True Course (from Step 1), and enter the result as follows.
4. Magnetic Heading: Perform the following sub-steps, to calculate:
   1. Obtain the Magnetic Variation from your "Chart," and enter it as follows.
   2. Add/Subtract the Magnetic Variation from the True Heading (from Step 3), and enter the result as follows.
5. Compass Heading: Perform the following sub-steps, to calculate:
   1. Obtain the Compass Deviation from the "Aircraft's Documentation," and enter it as follows.
   2. Add/Subtract the Compass Deviation from the Magnetic Heading (from Step 4), and enter the result as follows.