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Property of Lear Siegler. DISTANCE AND DIRECTION. Property of Lear Siegler. Find the airport at 31° 58’ North, 87° 20’ West. Property of Lear Siegler. A B C - Mode “C” A B C D - Dialogue. Property of Lear Siegler. Terminal Learning Objective

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DISTANCE AND

DIRECTION

Property of Lear Siegler


Find the airport at 31° 58’ North,

87° 20’ West

Property of Lear Siegler


A

B

C - Mode “C”

A

B

C

D - Dialogue

Property of Lear Siegler


Terminal Learning Objective

At the completion of this lesson the student will:

Action: Identify the characteristics of a course

Condition: Given a plotter and a Sectional Aeronautical Chart

Standard: In Accordance With (IAW) Field Manual (FM) 3-04.240

Property of Lear Siegler


Enabling Learning Objective (ELO) #1

Action: Select scales used for measurements

Condition: Given a plotter

Standard: IAW FM 1-240

Property of Lear Siegler


PLU-2/C Flight Plotter

For Sectional Charts, Use 1:500,000


SP - 4 Flight Plotter

Sectional Chart Side, 1:500,000

WARNING !!!

Do not use the 1:1,000,000

scale side of the plotter!

Property of Lear Siegler


Nautical Mile Scale - Top Scale

Labeled every 5 NM, 0 to 60 NM

Property of Lear Siegler


Nautical Mile Scale - Top Scale

Longer black increments placed every 1 NM

Shorter black increments placed every 1/2 NM

Property of Lear Siegler


Statute Mile Scale - Bottom Scale

Labeled every 5 SM, 0 to 70 SM

Property of Lear Siegler


Statute Mile Scale - Bottom Scale

Longer black increments placed every 1 SM

Shorter black increments placed every 1/2 SM

Property of Lear Siegler


Nautical Mile Scale – 1:500,000 Scale

Labeled every 5 NM, 0 to 55 NM


Nautical Mile Scale – Bottom Line

Longer black increments placed every 2 1/2 NM

Shorter black increments placed every 1/2 NM


Grommet

Used to center longitude/latitude lines

when measuring direction

Property of Lear Siegler


Direction Scales

Using longitude lines

Outer scale - use for flights in an

easterly direction, 0° to 180°

Property of Lear Siegler


Direction Scales

Using longitude lines

Inner scale - use for flights in an

westerly direction, 180° to 360°

Property of Lear Siegler


Direction Scales

Marked in 1° increments and

read from right to left,

regardless of direction of flight

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60° Direction Scales

Using latitude lines

60° scale is located inside

the two larger scales

Property of Lear Siegler


60° Direction Scales

Using latitude lines

Outer scales - use for flight

in a southeast, southwest

direction, 150° - 210°

Property of Lear Siegler


60° Direction Scales

Using latitude lines

Inner scales - use for flight

in a northeast, northwest

direction, 030° - 330°

Property of Lear Siegler


Questions?

Property of Lear Siegler


Enabling Learning Objective (ELO) #2

Action: Measure distance

Condition: Given a plotter and Sectional Aeronautical Chart

Standard: IAW FM 1-240

Property of Lear Siegler


DRAWING AND MEASURING

COURSE LINES

1. Locate coordinate intersection.

2. Draw course line.

3. Measure the distance in nautical miles.

Property of Lear Siegler


DISTANCE

25 NM

DRAWING AND MEASURING COURSE LINES

3. Measure the distance in nautical miles.

1. Locate coordinate intersection.

2. Draw course line.

Property of Lear Siegler


Questions?

Property of Lear Siegler


Enabling Learning Objective (ELO) #3

Action: Plot a course in degrees

Condition: Given a plotter and Sectional Aeronautical Chart

Standard: IAW FM 1-240

Property of Lear Siegler


TRUE COURSE

True course is always measured

clockwise from true north to the

proposed path of flight.

Property of Lear Siegler


DRAWING COURSE LINES

AND MEASURING TRUE COURSE

1. Locate coordinates and draw course

line between the two points.

2. Estimate approximate direction

before measuring.

3. Slide plotter along course line using

any parallel line on the plotter until

longitude line intersects grommet.

4. Use inner/outer scale and read

direction in degrees.

Property of Lear Siegler


DIRECTION - 045°

NOTICE!

STRAIGHTEDGE OF

THE PLOTTER MUST

REMAIN PARALLEL

TO COURSE LINE.

NORTH?

SOUTH?

SOUTHEAST?

NORTHEAST?

MEASURING TRUE COURSE

4. Use inner/outer scale to

read direction in degrees.

3. Slide plotter along course line until

longitude line intersects grommet.

2. Estimate approximate direction before measuring.

1. Locate coordinates and draw course lines.

Property of Lear Siegler


DRAWING COURSE LINES AND

MEASURING TRUE COURSE - 60° SCALE

1. Locate coordinates and draw course

line between the two points.

2. Estimate approximate direction

before measuring.

3. Slide plotter along course line using

any parallel line on the plotter until

latitude line intersects grommet.

4. Use 60° inner/outer scale and read

direction in degrees.

Property of Lear Siegler


DIRECTION - 013°

NORTH?

SOUTH?

SOUTHEAST?

NORTHEAST?

MEASURING TRUE COURSE

3. Slide plotter along course line until

latitude line intersects grommet.

4. Use 60° inner/outer scale to

read direction in degrees.

2. Estimate approximate direction before measuring.

1. Locate coordinates and draw course lines.

Property of Lear Siegler


MARKING A COURSE LINE

1. Place a tick mark every 10 NM.

2. Label tick marks every 20 NM.

3. Select a visual check point every 15 NM.

Property of Lear Siegler


40

20

MARKING A COURSE LINE

2. Label tick marks every 20 NM.

1. Tick mark course line every 10 NM.

3. Select a visual checkpoint every 15 NM.

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DAY VFR CHECKPOINTS

1. Cities, towns, and airfields.

2. Highways and railroad intersections.

3. Prominent rivers and lakes.

4. Prominent terrain features.

5. Towers.

6. Prominent man-made features.

Property of Lear Siegler


NIGHT VFR CHECKPOINTS

1. Airport rotating beacons.

2.Cities and large towns.

3. Major, well traveled highways.

4. Prominent lakes and rivers if

moonlit or near large cities.

Property of Lear Siegler


Questions?

Property of Lear Siegler


Enabling Learning Objective (ELO) #4

Action: Survey route of flight for hazards

Condition: Given Sectional Aeronautical Chart

Standard: IAW FM 1-240

Property of Lear Siegler


SURVEYING HAZARDS

ALONG A COURSE LINE

1. Determine highest MEF.

2.Determine elevation of highest terrain.

3. Determine obstructions.

4. Determine classes and types of airspace.

5. Determine emergency airfields.

Property of Lear Siegler


Questions?

For light background reading: FM 3-04.240 Chapter 4 Paragraph 4-92 through 4-100

Property of Lear Siegler


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