A109

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Author:
mponz219
ID:
279667
Filename:
A109
Updated:
2014-07-25 23:35:13
Tags:
IFS
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Description:
Basic Navigation
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  1. 109.1 Define Selected Navigation Terms

    Latitude -
    Lines running east and west parallel to the equator. used to measure angular distance north or south of the equator.
  2. Longitude
    Meridians of longitude are drawn from the pole at right angles to the equator.
  3. Prime Meridian
    Used as the zero degree line, passes through Greenwich, England.  From this line, measurements are made in degrees both easterly and westerly up to 180 degrees.
  4. True North
    Where Longitudinal meridians converge.
  5. Magnetic North
    Where the needle of a compass points
  6. Magnetic Variation
    The angular difference between true north and magnetic north
  7. Agonic Line
    Where true north and magnetic north are the same
  8. Magnetic Course
    The conversion made by either adding or subtracting the magnetic variation from the True Course.
  9. Time
    Measured in relation to the rotation of the earth. The days is defined as the time required for the Earth to make one complete revolution of 360 degrees.
  10. Day light savings time
    During the summer, subtract 1 hour.
  11. Magnetic Deviation
    Compass is affected by influences within the aircraft such as electrical circuits, radios  and metal.  This deflection is known as deviation.  and it must be applied to convert a magnetic course to a compass course.
  12. Compass course
    True course + or - Variation + or - deviation = Compass course.
  13. VFR Cruising Altitudes
    • Based on magnetic course of the aircraft. 
    • 3000 feet AGL or greater
    • 0-179 = odd thousands plus 500
    • 180-359 = even thousands plus 500
    • (cowboys go west to get even)
  14. Objective 109.2 Define Dead Reckoning
    Method used to determining position with a heading indicator and calculations based on speed, elapsed time and wind effect from known position.
  15. 109.3 Define Pilotage
    Pilotage is the use of visible landmarks to maintain a desired course, and is the basic form of navigation for a beginning pilot under VFR.
  16. Most common VFR chart pilots use
    • Sectional
    • terminal
    • world charts

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