Fuji,
You will find that all aircraft used for the IR training have to be approved by the CAA. They have to be serviceable for IFR flights in Class A airspace.
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Io540,
Actually unless the GPS is an approved panel mounted one with an up-to-date database, the ADF backed up by GPS is the only "legal" option. Never mind the CAA - just read the GPS manufacturers own statement regarding that one.
Of course the NDB must be within coverage which is very limited in most cases.
I laugh when people who can't track an NDB slag it off.
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Pipertommy,
You can still use the IMC rating. You just can not
rely on the VOR or ILS indications as the
sole basis for your departure, enroute navigation or approach. Of course you can not rely on an unapproved GPS as a [/B]sole[/B] means of navigation either.
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If anyone finds that when within the DOC with a calibrated serviceable ADF and a competent pilot that an NDB is providing information that is as inaccurate as IO540 describes i.e. well beyond the limits allowed then they should report the matter via an MOR. Silence in such a situation could cause another pilot to have an accident. Would not like to have that on my concience.
Regards,
DFC