T Airway.

[luvflyin]

Victor airways are established using a 4.5 degree splay. At 51 miles from the VOR that splay exceeds 4 nautical miles so there's a bulge in the airway. Within 38 miles of the VOR the splay is less than three nautical miles so a reduction in airway width can be taken if needed to accommodate another procedure, such as a holding pattern or SUA.

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Ok. It's a protected airspaces don't overlap thing. Thanks for the detail.

 

[luvflyin]

990 feet above an obstruction is more than 1000 feet above the ground. When making MVA/MIA maps it's assumed that 200' obstructions exist everywhere that they can be built without notifying the FAA so 1200' AGL becomes the de facto limit.

Obviously. I pretty much meant the highest thing out there be it metal or dirt. The more I think about it, the 980 foot thing was you didn't have to isolate an obstruction that penetrated the MVA by only 20 feet. That obstruction might be about a 320 footer on the high ground or a taller one on the lower ground