"Peter R." wrote in message
...
Why this approach? To me it seems an IFR certified GPS and one VOR would
suffice.
Because one of the restrictions to use of GPS in lieu of ADF or DME is use
as the principal instrument approach navigation source. In most VOR/DME
approaches track information is provided by a VOR and distance along the
track by DME, in this one it's just the opposite.
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