Does the language in the GNS530 pilots guide, page 4:

[...]The database is
updated every 28 days and must be current for approved instrument
approach operations."

not create a requirement that the database be current to use the unit
for GPS or overlay approaches?

No, it is the flight manual supplement that is controlling. There may be
different supplements out there with different requirments too.

You don't think "careless and reckless" would occur to the FAA should
such operations come to their attention?

Jose
(r.a.homebuilt retained, though I don't follow that group)
--
Get high on gasoline: fly an airplane.
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