On Mon, 03 Dec 2007 16:33:12 -0700, Newps wrote:

Anybody have the link to the FAR that states what the requirements are
for IFR approved GPS's and the database currency for those units.

Newps,

I believe that if you are looking for the legal basis of that sort of
information, you will have to search it out in the AFM supplement and TSO
for the box you have. The applicable regulations would be those that
require you to act in accordance with those documents, and I don't recall
exactly which one's.

For example, the AFM for my CNX80/GNS480:

====================================
2.3 DATABASE

The GNS 480 Database Card P/N 138-0329-051 Rev. -- (or later FAA approved
version) must be installed.

a) IFR enroute and terminal navigation is prohibited, unless the
pilot verifies the currency of the database or verifies each selected
waypoint for accuracy by reference to current approved data.

b) Instrument approaches using the GNS 480 are prohibited, unless
GNS 480 approach data is verified by the pilot or crew to be current.
Instrument approaches must be accomplished in accordance with approved
instrument approach procedures that are loaded from the GNS 480 database.
=======================================

Seems clear to me that for enroute and terminal operations, the DB does not
need to be current so long as I verify each waypoint.

But for Instrument approaches, I must have a current DB.
--ron