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about msa

Asked by: 574 views
Commercial Pilot, Instrument Rating

I got a question about the MSA on Jeppesen arrival plate (RCTP 20-2). The MSA circle  was divided into three sectors with three altitude before, but I found that it becomes only one altitude(not divided anymore) on the new version. I've been looking for the reason for a long time but still can't figure it out. Does anyone know why they did such the change?

https://imgur.com/WgpiW0S

https://imgur.com/sW3IYhd

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1 Answers



  1. KDS on Oct 18, 2017

    I don’t have the answer, but I do note that the MSA’s are based on two different points. Maybe looking at the relationship between those two points on the full chart would lend a clue.

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