1-in-60 Rule

 

The 1-in-60 rules is a basic rule of thumb used in air navigation. It states:

 

One degree offset equals one nautical mile when sixty nautical miles from the origin point.

Examples

 

Track Correction:

If a pilot is flying a leg of 120 miles and finds after travelling 60 miles that they are two miles to the right of track then a correction of 4° to the left (2° to fly parallel to the intended track and another 2° to bring them to their target) will bring them to their destination.

 

DME Arc

To calculate the distance on a DME arc, use these basic calculations.

10nm Arc = Divide radials by 6

12nm Arc = Divide radials by 5

15nm Arc = Divide radials by 4

 

E.g. 30 degrees of a 10nm arc is 30/6 = 5nm

 

#Distance from VOR and #1 degree = ?nm

60---------------------------------1

30-------------------------------.50

15--------------------------------25

10--------------------------------16

 

*Note

 

=1 degree equal with 60 nautical mile(distance/ 1 nautical mile for height frm offset. In order to calculate distance on DME you shall follow this arc measurement. DME Arc

To calculate the distance on a DME arc, use these basic calculations.

10nm Arc = Divide radials by 6

12nm Arc = Divide radials by 5

15nm Arc = Divide radials by 4 

E.g. 30 degrees of a 10nm arc is 30/6 = 5nm

 

#Air. Net