Operation Manual

33
Calculating the navigation plan
Required time
Question
How long does it take an
airplane flying at 180 knots
to fly a distance of 450
nautical miles?
Answer
Align "18" on the scale
to "
▲
". The answer
"2:30" (two hours and 30
minutes) corresponds to
"45" on the scale.
60
55
50
45
40
35
30
25
20
15
10
11
12
13
14
16
17
18
19
21
22
23
24
90
80
70
F
U
E
L
L
B
S
.
L
I
T
E
R
S
.
O
I
L
L
B
S
.
I
M
P
G
A
L
.
G
A
L
.
U
S
.
55
50
N
A
U
T
.
45
40
35
30
25
20
15
10
90
80
70
11
14
16
17
18
19
21
22
23
24
S
T
A
T
.
K
M
.
1:10
1:20
1:30
1:40
1:50
2:00
2:30
3:00
3:30
4:00
4:30
5:00
6:00
7:00
8:00
9:00