Recently, Newps posted:

Neil Gould wrote:

The reason why you can't file such an
alternate is that you don't have the minimum information required to
safely fly that approach.

No, that's not why. As a matter of fact you do have all the
information. The reg is there to provide redundancy.

Oh? The question Robert asked was whether he could legally fly VORDME
approaches if he removed his DME after installing the 430. I thought
Thomas Borchert gave a very good reply, which seemed clear to me. I'm sure
that my IFR training, which is not very deep, may lack some practical
point about this, as I don't see how a reg that requires you to specify
the equipment on board could allow one to file an alternate that requires
equipment that you don't have. If I have that wrong, I would appreciate
your clearing it up for me.

Neil