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something like “Descend so as to cross 15 miles west of Salom at 17,000 feet,” the time-to-go reading is not known to us unless we create a new waypoint at that offset point. But distance is always a known quantity. (In this case, approaching Salom from the west, we’d need to add the extra 15 miles to our calculation. Need to lose 10,000 feet? Then instead of 33 out, we’d start down about 48-50 nm from Salom.)
Try it. You’ll like it! And to make it easier, I will include a couple of tables. Feel free to copy them and attach them to your kneeboard or whatever for easy reference. KA
King Air expert Tom Clements has been flying and instructing in King Airs for over 43 years, and is the author of “The King Air Book.” He is a Gold Seal CFI and has over 23,000 total hours with more than 15,000 in King Airs. For information on ordering his book, go to www.flightreview.net. Tom is actively mentoring the instructors at King Air Academy in Phoenix.
If you have a question you’d like Tom to answer, please send it to Editor Kim Blonigen at kblonigen@cox.net.
ALTITUDE TO LOSE (Thousands)
DISTANCE REQUIRED (nm)
28 92
GROUND SPEED (knots)
RATE OF DESCENT (fpm)
390 1,950
27 89 380
26 86 370
25 83 360
24 79 350
23 76 340
22 73 330
21 69 320
20 66 310
19 63 300
18 59 290
17 56 280
16 53 270
15 50 260
14 46 250
13 43 240
12 40 230
11 36 220
10 33 210
9 30 200
8 26 190
7 23 180
6 20 170
5 17 160
4 13 150
3 10 140
2 7 130
1 3 120
1,900
1,850
1,800
1,750
1,700
1,650
1,600
1,550
1,500
1,450
1,400
1,350
1,300
1,250
1,200
1,150
1,100
1,050
1,000
950
900
850
800
750
700
650
600
JUNE 2016
KING AIR MAGAZINE • 15