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08-09-2019, 12:23 AM
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Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,370
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I'm also interested in this thread. If I recall correctly, the required ARINC-429 box uses up one of the Dynon EFIS serial ports. All 5 ports of mine are taken; GPS, VP-X, ELT, Transponder and ADS-B. So I think in my particular situation, If I wanted to add a backup ADAHRS, EFIS screen, second Attitude Indicator and NAV/COM/ILS I would need to probably ditch the VP-X box and go with fuses/breakers. This would require some additional trim/flap/wig-wag wiring.
Starting to get expensive just to have the IFR capability!
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08-09-2019, 01:10 AM
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Join Date: Sep 2007
Location: Mesa Arizona
Posts: 608
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“ILS and LPV approaches are essentially equal”
Out in the real world I would agree, but the question all boils down to the PTS/ACS of the IFR rating. It says precision and by definition, the only current precision approach is ILS based.
From a practical standpoint of equipage, an LPV requires NAV and if you have NAV installed you normally have glideslope as well. Substituting VNAV for G/S is another feather in your quiver if G/S capability is lost either onboard or on ground, or if the particular approach doesn’t offer G/S capability, but I sincerely believe that the vast majority of DE’s are not going to accept an LPV as a fulfillment of the ACS. Again if you have a proper NAV box, you have G/S as well. The FAR’s are a bit vague and outdated concerning equipage, but the ACS is quite specific.
__________________
Myron Nelson
Mesa, AZ
RV-10 N24EV
KITPLANES Contributing Editor
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08-09-2019, 03:11 AM
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Join Date: Feb 2007
Location: Mpumalanga, South Africa
Posts: 1,065
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If you get a GNS430 or 650, then you can connect the ELT serial (assuming it's for GPS position) to that and free up one on the Dynon for the ARINC429 module .....
You might want to consider a second ADHARS if for no other reason than it will give you a warning that the 2 disagree and that something has therefore failed. G5 for backup?
__________________
Paul
Mercy Air, White River FAWV
RV-10 ZU-IIZ - "Zeus"
Building Bearhawk Bravo - RV-18 not available
2019 Donation Made
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08-09-2019, 04:40 AM
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Join Date: Nov 2011
Location: Amelia, Va
Posts: 268
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No Nav
As I have mentioned before on this forum, I trained and took my IFR checkride in my RV. It has only a GTN 625. No Nav. The DPE said that the LPV approach down to to 200ft was good for him.
He was reasonable. Just need to find someone like him.
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08-09-2019, 05:29 AM
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Join Date: Mar 2010
Location: KSGJ / TJBQ
Posts: 2,039
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Quote:
Originally Posted by bruceh
I'm also interested in this thread. If I recall correctly, the required ARINC-429 box uses up one of the Dynon EFIS serial ports. All 5 ports of mine are taken; GPS, VP-X, ELT, Transponder and ADS-B. So I think in my particular situation, If I wanted to add a backup ADAHRS, EFIS screen, second Attitude Indicator and NAV/COM/ILS I would need to probably ditch the VP-X box and go with fuses/breakers. This would require some additional trim/flap/wig-wag wiring.
Starting to get expensive just to have the IFR capability!
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The ELT is a one way device so you may be able to "piggyback" the ARINC module on that same RS232 line. Contact DYNON support and they can verify based on your particular installation.
Quote:
Originally Posted by paul330
If you get a GNS430 or 650, then you can connect the ELT serial (assuming it's for GPS position) to that and free up one on the Dynon for the ARINC429 module .....
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This is exactly how I have my installation.

__________________
Galin
CP-ASEL-AMEL-IR
FCC Radiotelephone (PG) with Radar Endorsement
2020 Donation made
www.PuertoRicoFlyer.com
Last edited by GalinHdz : 08-09-2019 at 05:32 AM.
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08-09-2019, 07:30 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,146
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Quote:
Originally Posted by Tooch
As I have mentioned before on this forum, I trained and took my IFR checkride in my RV. It has only a GTN 625. No Nav. The DPE said that the LPV approach down to to 200ft was good for him.
He was reasonable. Just need to find someone like him.
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Same here, my CFII took one look at my panel and said "Oh, this is going to be fun." The DPE I used was interested in my builders log and maintenance records, and took the glass panel in stride, commenting that it was just like the G1000 and shouldn't be a problem.
He did make me fail my left hand primary screen and shoot an ILS with right hand screen - so if you have dual screens you need to expect that. It's a little different trying to fly an approach looking across the cockpit at an angle to your flight path.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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08-09-2019, 08:01 AM
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Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 1,365
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Quote:
Originally Posted by bruceh
I'm also interested in this thread. If I recall correctly, the required ARINC-429 box uses up one of the Dynon EFIS serial ports. All 5 ports of mine are taken; GPS, VP-X, ELT, Transponder and ADS-B. So I think in my particular situation, If I wanted to add a backup ADAHRS, EFIS screen, second Attitude Indicator and NAV/COM/ILS I would need to probably ditch the VP-X box and go with fuses/breakers. This would require some additional trim/flap/wig-wag wiring.
Starting to get expensive just to have the IFR capability!
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Bruce when you say serial port I'm assuming you are talking about the network connections? If so, and I'm not mistaken you can simply add another Dynon hub and that will give you plenty of additional network ports.
__________________
Jereme Carne
PPL
RV-7A Emp. done
Wings done
Fuselage done
Finish kit almost done
Exempt but gladly paying!
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08-09-2019, 08:06 AM
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Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 1,365
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Quote:
Originally Posted by paul330
If you get a GNS430 or 650, then you can connect the ELT serial (assuming it's for GPS position) to that and free up one on the Dynon for the ARINC429 module .....
You might want to consider a second ADHARS if for no other reason than it will give you a warning that the 2 disagree and that something has therefore failed. G5 for backup?
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Yes I will put a G5 in place of where my airspeed indicator is.
Quote:
Originally Posted by Tooch
As I have mentioned before on this forum, I trained and took my IFR checkride in my RV. It has only a GTN 625. No Nav. The DPE said that the LPV approach down to to 200ft was good for him.
He was reasonable. Just need to find someone like him.
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I think at this point I will plan for something that has NAV capabilities, leaning towards a 430 right now but I'm a bit torn on that one as I'm not sure how much longer Garmin will support it? Although that could be a misguided concern.
__________________
Jereme Carne
PPL
RV-7A Emp. done
Wings done
Fuselage done
Finish kit almost done
Exempt but gladly paying!
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08-09-2019, 09:01 AM
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Join Date: Jan 2012
Location: Reno, NV
Posts: 446
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Dynon ARINC-429 input/output
Quote:
Originally Posted by bruceh
I'm also interested in this thread. If I recall correctly, the required ARINC-429 box uses up one of the Dynon EFIS serial ports. All 5 ports of mine are taken; GPS, VP-X, ELT, Transponder and ADS-B. So I think in my particular situation, If I wanted to add a backup ADAHRS, EFIS screen, second Attitude Indicator and NAV/COM/ILS I would need to probably ditch the VP-X box and go with fuses/breakers. This would require some additional trim/flap/wig-wag wiring.
Starting to get expensive just to have the IFR capability!
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Bruce,
The Dynon ARINC-429 box is connected to the SkyView serial bus, not any of the the RS-232 ports. Any of the Garmin GPS navigators will connect to the ARINC-429 box directly so it will be pretty easy to add a GPS navigator to your system. The ARINC-429 gets it power from the SkyView serial bus, so you will just need additional power for the GPS navigator. The second ADHARS is also connected to the SkyView Serial bus so no extra power input.
If you have any other questions just email at hr2plt@yahoo.com.
Brian
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08-09-2019, 10:27 AM
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Join Date: Aug 2010
Location: Brookshire, TX
Posts: 1,036
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Quote:
Originally Posted by jcarne
Bruce when you say serial port I'm assuming you are talking about the network connections? If so, and I'm not mistaken you can simply add another Dynon hub and that will give you plenty of additional network ports.
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No, the Skyview system has dedicated serial ports (5 RX and 5 TX) in addition to the much more flexible Skyview network. Generally speaking, other Dynon products will use the SV network, while third-party devices will use serial. Exceptions to this (Dynon devices that use serial instead of SV network) are:
- GPS receiver(s)
- SV transponder
- SV ADS-B receiver
The ARINC-429 box does not use a serial port on the display, it uses SV network, so the original concern that started this line of discussion is actually moot.
__________________
Philip
-8 fuselage in progress (remember when I thought the wing kit had a lot of parts? HAHAHAHAHA)
http://rv.squawk1200.net
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