ADF and GPS equip %

Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither
?

Either piece of equipment counts only if it is serviceable.

Alternatively, would anyone like to take a guess at the %ages? This is
Usenet after all, and we shouldn't let facts cloud the issue. ;-)

Thanks

Julian

All Cirrus planes from the factory fall into category C. While it is
the best selling single, I don't know what proportion of the US GA
fleet it represents.

"Julian Scarfe" wrote in message ...
Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither
?

Either piece of equipment counts only if it is serviceable.

Alternatively, would anyone like to take a guess at the %ages? This is
Usenet after all, and we shouldn't let facts cloud the issue. ;-)

Thanks

Julian


I don't really know, but I doubt there's any comprehensive data for that.
Be prepared for 'guesses' to be your only guidance.
FWIW, I'm in group A, because I saw no reason to remove my ADF
when I added my GPS, MFD, new transponder, and new radar.
I did remove my old LORAN and my old VOR/DME RNAV at the time.
I continue to find good utility in the ADF, and I'm glad I retained it.

I'm not aware of any requirement that an aircraft owner report to any
government entity just what avionics are installed in his plane.

Now there are places in this world, Julian, that license televisions...who'd
have imagined such a thing? g

Bob Gardner

"Julian Scarfe" wrote in message
...
Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither
?

Either piece of equipment counts only if it is serviceable.

Alternatively, would anyone like to take a guess at the %ages? This is
Usenet after all, and we shouldn't let facts cloud the issue. ;-)

Thanks

Julian

On Thu, 30 Mar 2006 17:43:24 GMT, "Julian Scarfe"
wrote:

Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither
?

Either piece of equipment counts only if it is serviceable.

Alternatively, would anyone like to take a guess at the %ages? This is
Usenet after all, and we shouldn't let facts cloud the issue. ;-)

Thanks

Julian


I don't think there is data for that in the US. I am in group A because
even after I installed a CNX80, I still required my ADF receiver to obtain
my home airport altimeter setting (it is not available through ATC or any
other source) and use the lowest minimums.


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

and there are places in this world that have informative, unbiased,
commercial-free television channels. Who'd have imagined such a
thing? g

Tim.

On Thu, 30 Mar 2006 14:20:29 -0800, "Bob Gardner"
wrote:

I'm not aware of any requirement that an aircraft owner report to any
government entity just what avionics are installed in his plane.

Now there are places in this world, Julian, that license televisions...who'd
have imagined such a thing? g

Bob Gardner

"Julian Scarfe" wrote in message
...
Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither
?

Either piece of equipment counts only if it is serviceable.

Alternatively, would anyone like to take a guess at the %ages? This is
Usenet after all, and we shouldn't let facts cloud the issue. ;-)

Thanks

Julian

I am in Cat C. My ADF was belly up when I bought the plane and the unit
was beyone economical repair. I pulled it out. At the time I had a VFR
only GPS. I replaced it with a IFR approach certified GPS. A lot of
approaches still require ADF, even newly commissioned ones. Go figure.
So you need one or the other. There are a couple of approachs around
here that you can find the holding point over the OM and don't need an
ADF or GPS, but that is not the way the approach plate is shown.

Ross
KSWI.

John R. Copeland wrote:

"Julian Scarfe" wrote in message ...

Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither
?

Either piece of equipment counts only if it is serviceable.

Alternatively, would anyone like to take a guess at the %ages? This is
Usenet after all, and we shouldn't let facts cloud the issue. ;-)

Thanks

Julian



I don't really know, but I doubt there's any comprehensive data for that.
Be prepared for 'guesses' to be your only guidance.
FWIW, I'm in group A, because I saw no reason to remove my ADF
when I added my GPS, MFD, new transponder, and new radar.
I did remove my old LORAN and my old VOR/DME RNAV at the time.
I continue to find good utility in the ADF, and I'm glad I retained it.

I'm not aware of any requirement that an aircraft owner report to
any government entity just what avionics are installed in his
plane. [...]

But perhaps it can be approximately inferred from an archive of IFR
flight plans. /G is obvious (subject to slight .. exaggeration .. by
vfr-gps folks); suspect ADF if filed destination/alternate are not
both served by other navaids.

- FChE

"Tim Auckland" wrote in message
...
and there are places in this world that have informative, unbiased,
commercial-free television channels. Who'd have imagined such a
thing? g

Tim.
On what planet?

Can anyone point me to data regarding the proportions of the US GA
IFR-capable fleet that have:

A Both an ADF and an approach-approved GPS
B An ADF but no approach-approved GPS
C An approach-approved GPS but no ADF
D Neither

As with others, dunno. I have both and did both a GPS & NDB approach today.
---
Ken Reed
N9124X