Appendix 4.A: Tolerances

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APPENDIX 4.A
Tolerances
General
Final exam
80%
Pulling/Plotting Lat/Long
+/- 1 minute
Measure Direction
+/- 1 degree
Measuring Distance
+/- ½ nautical mile
CR 3
FRONT SIDE
Time
+/- one unit on logarithmic scale*
Speeds
Groundspeed
+/- one unit on logarithmic scale*
True Airspeed
+/- 2 knots
Mach #
+/- .01
Distance
+/- one unit on logarithmic scale*
Fuel Flow
+/- one unit on logarithmic scale*
Fuel Quantity
+/- one unit on logarithmic scale*
BACK SIDE
Headwind/Tailwind Comp If wind velocity < 71 knots +/- 3 knots
If wind velocity < 70 knots +/- 5 knots
Crosswind Components
If wind velocity < 71 knots +/- 3 knots
If wind velocity < 70 knots +/- 5 knots
In-flight Winds
If wind velocity < 71 knots +/-and 3 knots
If wind velocity < 70 knots +/-and 5 knots
Mission Planning/Jet Log EFR
Problem specific. Each problem takes into account each individual skill
required to perform the task. Every skill has a tolerance which creates a
pyramid of possible answers. Using the pyramid enables us to ensure if
you are within the tolerances for each individual skill, you will be within the
tolerances for the final EFR calculation!
*+/- 1 unit on logarithmic scale is based on the distance per tick-mark on the 10
to 15 section of the CR-3. This equates to approximately +/- 1%.
4.A-171

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