If a runway allows takeoff/landing in both directions, how many numbers would it have?

If a runway allows takeoff/landing in both directions, how many numbers would it have?

• A. One
• B. Four
• C. Two
• D. Three

Answer: (C)

Runway numbers come from the magnetic heading of each direction you use the runway in. If a runway can be used for takeoff and landing in both directions, you assign a number to each end, giving you two numbers in total. The number for each end is the magnetic heading to the nearest ten degrees. For example, a runway oriented about 090 degrees in one direction and 270 degrees in the opposite direction is labeled 09 for the eastbound direction and 27 for the westbound direction. Opposite directions are 180 degrees apart, so the two designations are different but tied to the two usable ends. That’s why you end up with two numbers.

Runway numbers come from the magnetic heading of each direction you use the runway in. If a runway can be used for takeoff and landing in both directions, you assign a number to each end, giving you two numbers in total. The number for each end is the magnetic heading to the nearest ten degrees. For example, a runway oriented about 090 degrees in one direction and 270 degrees in the opposite direction is labeled 09 for the eastbound direction and 27 for the westbound direction. Opposite directions are 180 degrees apart, so the two designations are different but tied to the two usable ends. That’s why you end up with two numbers.