# Pattern Work help (ATC)

Could someone please help me with understanding what “Left base” and “Right base” is, and how can you tell which is which base for that particular runway?

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Hello!

Basically, if you are on right base, the airport will be on your right if you look out from your aircraft window and same is for left base. If you are on left base, the airport will be on your left side if you look out from your aircraft window. Pretend you are inside the aircraft cockpit and depending if you have to look right/left to see the airport from the cockpit, that will tell you if you are on right base or left base. Hope that helps!

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Okay thank you! The picture really helps visualize how it works.

Another thing; so the direction of the turn needed to begin the final is the corresponding base? EX:

If you need to turn left to enter the runway final, you would be needing to be on the left base position?

Yes, if you are on right base, you would need to turn right to turn final and if you are on left base you would need to turn left to turn final.

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Just adding to what @Walter replied, as soon as there is a “right” designation, then the entire pattern is “right hand turns,” and instead if it was “left” then the entire pattern will be “left hand turns” (whether instructed by tower, or perhaps a chart for the default pattern at a given airport).

So just hearing (or seeing written somewhere) the one word “right” vs “left”, immediately fixes the whole pattern shape (which one of the two it will be).

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Sorry for the bother, but last question.

Could you show me an example of how a pattern would look for multiple runways, like KLAX 25R, and 25L?

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It’s similar to the picture I showed you in my first post with a double pattern. Normally, at KLAX we don’t use 25R and 25L for arrivals at the same time. Let’s say it was 24R and 25L. Right traffic pattern would be 24R and the left traffic pattern would be 25L.

Drew this (awfully drawn) diagram showing visually what @Walter is saying. Let me know if it makes sense. The pattern legs are displayed in italics

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That looks lovely!

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