IFR GNS 430 with expired database

On Apr 17, 2:39 pm, Peter Clark
wrote:
On 17 Apr 2007 14:10:21 -0700, wrote:



On Apr 17, 10:18 am, Peter Clark
wrote:
On 17 Apr 2007 09:04:53 -0700, wrote:

It's hard to imagine anyone thinking an expired GPS database would
prevent you from using the *other* navigational equipment in your
airplane - like an ADF or the independent VOR/ILS in the 430.

I don't think anyone does, except in the cases where you are required
to substitute because you don't have an ADF or DME and the precision
or VOR/DME style approach requires the GPS be used as a substitute for
ADF or DME. AIUI at that point you have to have the real equipment or
a current database.

Yes and no. To use the GPS to substitute for DME on a VOR-DME
approach is an approach operation. It requires a C129(A1) certified
box with a current database. However, if the *missed approach*
requires say, for you to navigate to an NDB for which you are
substituting GPS, that is a terminal operation which only requires
C129(A2) certification and can be flown with an expired database,
provided you have validated the NDB lat/lon.
Earlier in the thread you specified substituting GPS for the MAPH
HP. That is the second situation.

I don't have my supplements or manuals handy, but does that apply even
if the NDB blah is loaded as part of the approach procedure?

Presumably a non-GPS approach - since you can't fly a GPS approach
with an expired database. So, I don't see why it would matter whether
you had the approach loaded or not, since it won't be primary for
navigation until the missed approach segment. (Let's say, for
instance, we are flying the ILS 25R LVK, for which ADF is required
only for the missed approach) Whatever fixes that you loaded for the
miss, however you loaded them, would need to be verified to fly with
an expired database. At the miss you will be going direct to REIGA
NDB, using the GPS to substitute. Whether REIGA was just a "direct-
to" or the last in the string of fixes, which were otherwise unused is
immaterial. You just have to verify nobody moved the NDB.