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Designated Mountainous Areas

Flying on the West Coast, I am used to just about everywhere being considered mountainous except for portions of California’s Central Valley. I had a picture of the map in my mind, but couldn’t remember where I had seen it.

Designated Mountainous Areas

After a little digging, I found two sources:

CFR §95 Subpart B—Designated Mountainous Areas has a map that you can download.

The AIM 5−6−5. ADIZ Boundaries and Designated Mountainous Areas also has a map.

The MEA and MOCA on airways in mountainous areas provide 2,000′ of obstacle clearance while in non-mountainous areas they only provide 1,000′.

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