VOR OTS UFN: even for the majority of /G fliers, pilots must know which VORs are offline when cruising IFR. At least, that's what the rules say.(CHART ... Until Further Notice): An article from: IFR

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Citation Details
Title: VOR OTS UFN: even for the majority of /G fliers, pilots must know which VORs are offline when cruising IFR. At least, that's what the rules say.(CHART CLINIC)(Very High Frequency Omni-directional Radio-range Out of Service Until Further Notice)
Author: Gale Reference Team
Publication:IFR (Magazine/Journal)
Date: July 1, 2007
Publisher: Thomson Gale
Volume: 23 Issue: 7 Page: 11(1)

Distributed by Thomson Gale