Do I need DME or ADF in an IFR-certified GPS panel?

Looking for thoughts out there...

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

TIA,

- Don
History does not long entrust the care of freedom
to the weak or the timid. - Dwight D. Eisenhower

No Spam wrote:

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

There is no legal reason to keep those devices.

However, if you have them, they will certainly aid in situational
awareness.

--
Peter













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No Spam wrote:
Looking for thoughts out there...

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

I would say that it depends on how important it is to you to have a
ground based alternative to GPS in case it becomes unusable (equipment
failure, RAIM, whatever) and what ground based alternatives are
available where you fly. In much of the US, there's little point in
having an ADF. In more remote places...

Fred.

On Tue, 07 Jun 2005 20:20:34 -0500, No Spam wrote:

Looking for thoughts out there...

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

TIA,

- Don
History does not long entrust the care of freedom
to the weak or the timid. - Dwight D. Eisenhower


Without an ADF receiver, I would not be able to obtain the local altimeter
setting at my home airport, and take advantage of lower minimums available
with that information.

I have no idea how many other airports there are where the local altimeter
is available ONLY via the ADF, but that is the case at KEPM.


Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

On 6/7/05 20:40, "Peter R." wrote:

No Spam wrote:

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

There is no legal reason to keep those devices.

However, if you have them, they will certainly aid in situational
awareness.

Thanks, Peter,

I hadn't considering legality, but thanks for that point.

I was assuming the Garmin 430/530/480 to be the GPS unit(s), so I wouldn't
think SA could be improved by keeping the DME or ADF.

- Don
The cockpit of a plane is a world unto itself,
and to the pilot it is home.
"Wind, Sand and Stars" - Antoine de Saint-Exupéry

On 6/7/05 20:43, "Fred G. Black" wrote:

No Spam wrote:
Looking for thoughts out there...

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

I would say that it depends on how important it is to you to have a
ground based alternative to GPS in case it becomes unusable (equipment
failure, RAIM, whatever) and what ground based alternatives are
available where you fly. In much of the US, there's little point in
having an ADF. In more remote places...

Fred.

Thanks, Fred,

I think the 430/530/480 incorporate VOR/ILS, so the loss of the GPS
constellation shouldn't leave one "lost", should it? I realize I'd be
limited to enroute/terminal operations that only require VOR/ILS should the
GPS system take a hike.

- Don
Everybody needs a rubber chicken.

On 6/7/05 21:32, "Ron Rosenfeld" wrote:

On Tue, 07 Jun 2005 20:20:34 -0500, No Spam wrote:

Looking for thoughts out there...

If I have an IFR-certified GPS (terminal, not just enroute), is there any
reason to keep a DME or ADF in the panel? (Other than being able to listen
to am radio or tracking "non-offical" navaids - e.g., am radio stations!)

TIA,

- Don
History does not long entrust the care of freedom
to the weak or the timid. - Dwight D. Eisenhower


Without an ADF receiver, I would not be able to obtain the local altimeter
setting at my home airport, and take advantage of lower minimums available
with that information.

I have no idea how many other airports there are where the local altimeter
is available ONLY via the ADF, but that is the case at KEPM.


Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

Thanks, Ron, hadn't heard of such a case.

I see there's a phone number tied to your AWOS - have you tried calling it
airborne with a cell phone?

Never mind, that's illegal...

- Don
It's not how hard you fly 'em, it's how you fly 'em hard. - George Braly

"No Spam" wrote in message
...
On 6/7/05 20:40, "Peter R." wrote:

No Spam wrote:

If I have an IFR-certified GPS (terminal, not just enroute), is there
any
reason to keep a DME or ADF in the panel? (Other than being able to
listen
to am radio or tracking "non-offical" navaids - e.g., am radio
stations!)

There is no legal reason to keep those devices.

However, if you have them, they will certainly aid in situational
awareness.

Thanks, Peter,

I hadn't considering legality, but thanks for that point.

I was assuming the Garmin 430/530/480 to be the GPS unit(s), so I wouldn't
think SA could be improved by keeping the DME or ADF.

The ADF is no big deal, but definitely keep the DME. My guess is that you'll
find more GPS approaches that require DME than require ADF.

"Ron Rosenfeld" wrote in message
...
Without an ADF receiver, I would not be able to obtain the local altimeter
setting at my home airport, and take advantage of lower minimums available
with that information.

I have no idea how many other airports there are where the local altimeter
is available ONLY via the ADF, but that is the case at KEPM.

Yours is the first I've ever heard of where the altimeter was even AVAILABLE
over an NDB (not that I was listening...).

"Ron Rosenfeld" wrote in message
...

Without an ADF receiver, I would not be able to obtain the local altimeter
setting at my home airport, and take advantage of lower minimums available
with that information.

Not on 124.675?