IFR GNS 430 with expired database

I have been told that it is illegal to fly IFR in an aircraft that has
an operating IFR rated GNS 430, whose database is out of date, =even= if
it is placarded INOP, placed in the OFF position, and the airplane, even
without the 430, is otherwise legal for IFR.

True?

Jose
--
Get high on gasoline: fly an airplane.
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