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Old 28th Aug 2010, 10:45
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minuteman
 
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From my Jeppesen intro:

MINIMUM OBSTRUCTION CLEARANCE ALTITUDE (MOCA) — The lowest published altitude in effect between radio fixes on VOR airways, off airway routes, or route segments which meets obstacle clearance requirements for the entire route segment and in the USA assures acceptable navigational signal coverage only within 22 nautical miles of a VOR.

My understanding is that it does not guarantee navaid reception at that altitude.

The precise segment you refer in the VOR 16 is an approach transition (Jepp Intro Page 105 onwards) and any or all of the enroute type altitudes (e.g. in red, with a, or T afterwards) could be described due to its "enroute" nature. The approach itself only begins at the D4.6 point.

Edit for speling.
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