SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aero-runway-number-heading

A runway aligned near 270 degrees is usually numbered what?

It is numbered 27.

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  1. 09
  2. 27 ✔
  3. 36

Why: Runway numbers represent magnetic heading rounded to the nearest ten degrees, with the final zero removed. A 270-degree direction becomes runway 27.

Huh, didn't know that: The opposite end of runway 27 is normally runway 09.

The dad joke
Runway 27 dropped a zero to travel light.
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References

Answer: 27. Runway numbers represent magnetic heading rounded to the nearest ten degrees, with the final zero removed. A 270-degree direction becomes runway 27.

  1. Aerospace Dimensions Module 2: Aircraft Systems and Airports akwg.cap.gov/media/cms/Module_2__Aircraft_Systems_and_Airp_1A4CD2C6AF085_eae81.pdf
    The runway number is one tenth of the runway's magnetic heading.
    Checked 2026-10-10.

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