Property of Lear Siegler. DISTANCE AND DIRECTION Property of Lear Siegler

Property of Lear Siegler

DISTANCE ANDDIRECTION


Find the airport at 31° 58’ North, 87° 20’ West


ABC - Mode “C”

ABCD - Dialogue


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


Enabling Learning Objective (ELO) #1

Action: Select scales used for measurements

Condition: Given a plotter

Standard: IAW FM 1-240


PLU-2/C Flight PlotterFor Sectional Charts, Use 1:500,000

SP - 4 Flight PlotterSectional 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 ScaleLabeled every 5 NM, 0 to 60 NM


Nautical Mile Scale - Top ScaleLonger black increments placed every 1 NM

Shorter black increments placed every 1/2 NM


Statute Mile Scale - Bottom ScaleLabeled every 5 SM, 0 to 70 SM


Statute Mile Scale - Bottom ScaleLonger black increments placed every 1 SM

Shorter black increments placed every 1/2 SM


Nautical Mile Scale – 1:500,000 ScaleLabeled every 5 NM, 0 to 55 NM

Nautical Mile Scale – Bottom LineLonger black increments placed every 2 1/2 NMShorter black increments placed every 1/2 NM

GrommetUsed to center longitude/latitude lines

when measuring direction


Direction ScalesUsing longitude lines

Outer scale - use for flights in aneasterly direction, 0° to 180°


Direction ScalesUsing longitude lines

Inner scale - use for flights in anwesterly direction, 180° to 360°


Direction ScalesMarked in 1° increments and

read from right to left,regardless of direction of flight


60° Direction ScalesUsing latitude lines

60° scale is located insidethe two larger scales



Outer scales - use for flightin a southeast, southwest

direction, 150° - 210°Property of Lear Siegler


Inner scales - use for flightin a northeast, northwest

direction, 030° - 330°Property of Lear Siegler

Questions?



Action: Measure distance

Condition: Given a plotter and Sectional Aeronautical Chart



1. Locate coordinate intersection.

DRAWING AND MEASURINGCOURSE LINES

2. Draw course line.

3. Measure the distance in nautical miles.


1. Locate coordinate intersection.

DRAWING AND MEASURING COURSE LINES

2. Draw course line.3. Measure the distance in nautical miles.

DISTANCE25 NM


Questions?



Action: Plot a course in degrees

Condition: Given a plotter and Sectional Aeronautical Chart



TRUE COURSE

True course is always measuredclockwise from true north to the

proposed path of flight.


1. Locate coordinates and draw course line between the two points.

DRAWING COURSE LINESAND MEASURING TRUE COURSE

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.


1. Locate coordinates and draw course lines.

MEASURING TRUE COURSE

2. Estimate approximate direction before measuring.3. Slide plotter along course line until longitude line intersects grommet.

4. Use inner/outer scale to read direction in degrees.

NORTH?SOUTH?

SOUTHEAST?NORTHEAST?

DIRECTION - 045°

NOTICE!STRAIGHTEDGE OFTHE PLOTTER MUSTREMAIN PARALLELTO COURSE LINE.


1. Locate coordinates and draw course line between the two points.

DRAWING COURSE LINES ANDMEASURING TRUE COURSE - 60° SCALE

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.


1. Locate coordinates and draw course lines.

MEASURING TRUE COURSE

2. Estimate approximate direction before measuring.3. Slide plotter along course line until latitude line intersects grommet. 4. Use 60° inner/outer scale to

read direction in degrees.

NORTH?SOUTH?

SOUTHEAST?NORTHEAST?

DIRECTION - 013°


1. Place a tick mark every 10 NM.

MARKING A COURSE LINE

2. Label tick marks every 20 NM.

3. Select a visual check point every 15 NM.


1. Tick mark course line every 10 NM.

MARKING A COURSE LINE

2. Label tick marks every 20 NM.3. Select a visual checkpoint every 15 NM.Property of Lear Siegler

20

40

1. Cities, towns, and airfields.

DAY VFR CHECKPOINTS

2. Highways and railroad intersections.

3. Prominent rivers and lakes.


4. Prominent terrain features.

5. Towers.

6. Prominent man-made features.

1. Airport rotating beacons.

NIGHT VFR CHECKPOINTS

2. Cities and large towns.

3. Major, well traveled highways.


4. Prominent lakes and rivers if moonlit or near large cities.

Questions?



Action: Survey route of flight for hazards

Condition: Given Sectional Aeronautical Chart



1. Determine highest MEF.

SURVEYING HAZARDSALONG A COURSE LINE

2. Determine elevation of highest terrain.

3. Determine obstructions.


4. Determine classes and types of airspace.

5. Determine emergency airfields.

Questions?


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

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Property of Lear Siegler. DISTANCE AND DIRECTION Property of Lear Siegler