IFR.2.6 Time and Distance to the Station

Question 1

IFR.2.6 Time and Distance to Station

What’s the instrument we use for determining the distance to station?

What other instruments can we check if the DME is inoperative?

Answer 1

DME

VOR or NDB point

Question 2

How do you determine the distance with a VOR or NDB point?

Answer 2

• Set a heading 90º with our ACTUAL RADIAL
• When wings are levelled, take time and maintain this heading during the time the acft cuts 10 radials
• Apply the following 2 formulas

TIME TO STATION (in minutes) =Time (to cut 10 radias in sec) / 10

DISTANCE TO STATION = TAS x TIME TO STATION (in minutes) / 60