Instrument Aircraft Platform

Instrument Aircraft Platform

I am wanting to obtain my instrument raiting.  I've started a few threads in the past with questions.  I have one more.

What do you feel is a good platform for training with regards to how the airplane is equipped?

I own a 1956 C172 and am looking to do some upgrades to it.  Right now she is a very VFR only plane.  I have one comm radio and a yoke mounted GPS for navigation.  I would like to put a Garmin 430 in it so I will have two com radios, a gps, a vor, localizer and glideslope.  What else do I need?  I won't have a DME or ADF.  Are those two items needed during training for the rating?  I want to train in my own plane since that's what I'll be flying in the weather but I don't want to invent in those two technologies unless I need them.

Before anyone asks why I would spend a bunch of money on a plane this old when I could easily buy a newer skyhawk that has some this already in it, I have my reasons smile

    Dave

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Re: Instrument Aircraft Platform

I did my instrument training a plane with a Garmin 430.   That is the way to go.  I would love to put one in my 172 but it's too much money right now. You don't need the ADF because most NDB approaches have a GPS overlay and you don't need DME because the Garmin can be used as a substitute on most approaches.  You only have to do three approaches on the checkride and you can do ILS/LOC/GPS.

Keep your handheld GPS for situational awareness in case of electrical failure and pick up a handheld radio for the same reason if you are going to fly any heavy IFR. Good luck.

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Re: Instrument Aircraft Platform

I would like to add that you should have at least one VOR/LOC independent of the Garmin.  I have heard that during 9/11 the GPS system was shut down.  OK.  There are other outages that effect a GPS and a GPS can fail.. I would want at least one other diverse and independent method for navigation Over and above radar & communications with ATC. 

I agree with Jim, the handheld is a great backup for an electrical failure in IMC.

With a certified GPS I agree the DME and ADF are not needed for most airports.

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Re: Instrument Aircraft Platform

I don't know if you are planning on getting new state of the art kinda stuff or would consider previoulsy owned stuff.
One unit you might give consideration to would be a KNS-80.
It's a fully integrated RNAV system with internal VOR NAV, DME, LOC, and Glideslope systems
<http://www.avionix.com/rnav.html> for more info..
Just a thought...
Michael

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Re: Instrument Aircraft Platform

Dave, I'm currently instrument training in my '63 172D.  I have a Garmin 430, which is a Nav/Com GPS, so if the GPS system is shut down, you can use it for VOR only. I also have a KX155, but since the 430's been installed, the 155 has REALLY become backup. on VOR approaches, I'll use the NAV side of the 430, and still have the GPS showing the approach as backup. As previously stated you don't need an ADF or DME, the GPS can do both. Anyway, regs state that you need a DME or equivalent (GPS).  One other thing I installed is a Garmin 330 Transponder, which is great for traffic, which displays on the 430.
BTW, I agree with you on upgrading your existing plane, When I bought mine, I was hard pressed to find a cleaner bird than this '63, and I'm upgrading it for MY use, not to resell it. Good luck,
Paul
N2564U

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Re: Instrument Aircraft Platform

Paul,

Just to be cute.  The regs say (and I paraphase) you have to have the appropriate navigational system to fly the approach, e.g. to do an NDB approach you have to have an operable ADF on board.  BUT the regs never said you have to turn it on!

(You'd be foolish not too and it isn't he spirit of the rule; but I thought I would share that with you!)   

I tried this on a flight but I turned on and used the ADF to fly the apporach.  I found out that my handheld GPS (Garmin 295) and ADF disagreed considerable when finding the IAF (the NDB).  The Garmin approach starts the NDB approach about 5 nm from the airport on the correct bearing, it doesn't use the NDB or have a IAF. It uses an artifical FAF. Considering you are above and within the MSA it would probably be safe, but not a good idea.  What does the Garmin 430 (panel mounted IFR certified GPS) do with an NDB approach)?  Does it even have one?

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Re: Instrument Aircraft Platform

The 430 has overlays for most, if not all precision and non-precision approaches.  My experience when using the 430 as (an approved) substitute to an ADF was that its fixes agreed with the published procedures, and you can fly the approach a lot more precisely with the GPS.  I also use it in overlay mode for both ILS and localizer approaches, for situational awareness but of course I would have my CDI set to the localizer.

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