(Answers are on Page 38)
| GROUND SPEED | FEET PER MILE | FEET PER | ||
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| REQUIRED | MINUTE | ||
1. | 120 | 350 |
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2. | 100 | 250 |
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3. | 150 | 300 |
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Off-Course Problems
When you navigate by pilotage, you will occasion- ally find your airplane has drifted off the planned course due to the wind. If you find yourself over a landmark to one side of the course line you should be able to estimate the distance you have drifted off course (the scale of sectional charts is 8 statute miles to the inch), and your flight log should help determine how far you have flown and how far it is to your destination.
Two computer setups are required. The first will give you the heading correction necessary to offset wind drift, or “course to parallel.” On the middle scale, set the distance flown opposite of the dis- tance off course on the outer scale; the rate arrow points to the degrees of heading change to parallel the course.
Example: After flying 125 miles, you note that you are 8 miles off course. (See Figure 17.)
1.Set 125 on the middle scale to line up with 8 on the outer scale.
2.Read approximately 3.8° at the rate arrow.
The second setup will give you the additional head- ing change required to fly back to the original course line. On the middle scale, set distance remaining
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