Gns430 CDI

[woodsideraff]

I purchased an RV8A with a GNS430 but without an indicator. According to Garmin, they will only sell me a unit if it is installed by an "approved" facility.

I understand that most of the Efis can provide HSI indicators compatible with the 430. I have been unable to find (other than Garmin) any CDI units.

Can anybody suggest how I can get the CDI and Glideslope information from the 430 displayed at a minimum cost? Right now, I see my choices as either to go to a shop and have the Garmin unit installed, or purchase a glass panel.

Thanks and regards.

[Brantel]

Call and talk to Stein Air, he (Stein) will hook you up.

Another alternative is Stark Avionics.

[boom3]

Keep your eye out on Ebay, I've seen quite a few nice used ones for sale. (Some yellow tagged, and some not)

If you want Garmin, both the MD200-306 and GI-106A will work. The 430 will also run several other non Garmin units too.

[az_gila]

...from the SE Aerospace site on their GNS430 FAQ.

http://www.seaerospace.com/lc/cart.p...&model=GNS-430 -- click on the FAQ header

According to the Installation Manual, the following indicators are compatible with main switchable VOR/ILS/GPS Indicator output (Connector P4001) for the Garmin GNS-430 and GNS-530 GPS/Nav/Comms. GI-102 (no longer available), Garmin GI-102A, GI-106 (no longer available), GI-106A, S-Tec ST-180 HSI, King KI-202, KI-206, KI-208A, KI-209A, KI-525A, KPI-552, KPI-552B, KPI-553, KPI-553A, KPI-553B, Collins 331A-3G HSI, 331A-9G HSI, 331A-6P HSI, Bendix IN-831A, Century NSD-360, NSD-360A , NSD-1000 HSI, Sperry/Honeywell RD-550A, 650 HSI. The following indicators are compatible as well but not mentioned in the installation manual: King KNI-520, Collins/STec IND-350, IND-350A, IND-351, IND-351A, 331H-3G Basically, a non-converter type indicator is required for the VOR/ILS/GPS Indicator interface to the GNS-430/530 Note: The following indicators may be interfaced to the secondary VOR/ILS output of the GNS-430/530 (Connector P4006). This output only provides VOR/ILS information on the indicator not GPS deviation information. King KI-203, KI-204, KI-208 KI-209.

I was looking at the same thing for my Tiger....

[breister]

Is this for an Experimental aircraft? Have you considered one of the smaller EFIS units? They will provide all the functionality of an HSI plus provide backup flight info.

[Sticky1]

Stark or Stein Avionics. Any HSI will work. Check Mid Continient Instruments. Ebay has good used instruments and I have an HSI for sale currently working on my 530. Also think about and efis interface.

[Webb]

Originally Posted by breister

Is this for an Experimental aircraft? Have you considered one of the smaller EFIS units? They will provide all the functionality of an HSI plus provide backup flight info.

It may be functional but will it meet legal standards required for an external CDI for IFR flight with an in-panel GPS?

[N941WR]

Originally Posted by breister

Is this for an Experimental aircraft? Have you considered one of the smaller EFIS units? They will provide all the functionality of an HSI plus provide backup flight info.

The Dynon D10A is a great example of a small EFIS that can provide full HSI functionality and it is legal for IFR flight.




And both screens can display the glide slope.

[az_gila]

Originally Posted by N941WR

The Dynon D10A is a great example of a small EFIS that can provide full HSI functionality and it is legal for IFR flight.

*** pics removed ***

And both screens can display the glide slope.

...for all IFR installations is a bit of a jump - a leap of Homebuilding faith?

GPS installations must be TSO'd per the AIM (Chapter 1-1-19.d) and to be TSO'd you need to follow the GPS box makers Installation Instructions.

From the GNS 430 IM

HSI/CDI Indicator or EFIS
This device displays the Nav Flag, Left/Right, To/From, Glideslope Flag,, and Up/Down. the indicator(s) used in conjunction with the GNS 430 VOR/ILS recievers shall be TSO'd.

I'm sure the 430W WAAS version has the same, or stronger, language in it.

Since you need the GPS bit of a 430 to do WAAS approaches (correct?) then a TSO indicator would seem to be required.

I guess you could argue it out with the FAA over an ILS approach....

Other avionics equipment (nav/com/GPS) makers may be different, but the IM rules for TSO required installations....

[N941WR]

Gang,

This issue of IFR legal EFIS systems seems to be a real hot button and comes up on most every builder forum.

Doing some searches led me to this thread on the EAA's web site. To make life easier, I have copied the text from that page below.

Originally Posted by EAA

Equipping a Homebuilt for IFR Operations

The Experimental/Amateur-Built (aka homebuilt) segment of general aviation has grown and expanded over the years. It?s now quite common for the performance and capabilities of homebuilts to meet and often exceed that of factory-built aircraft. One area where this is especially apparent is cross-country flying.

As the cross-country capability of homebuilts has grown, the need to deal with weather has become more of an issue. Thus, more and more builders are asking the question ?what equipment is required to qualify a homebuilt for IFR operations?? In order to answer that question, we need take a look at the regulations as they apply to experimental/amateur-built aircraft, as well as other documentation and guidance the FAA has provided.

Minimum requirements;

The operation of a homebuilt aircraft is most directly governed by its Operating Limitations. These Operating Limitations are issued along with and as a part of the airworthiness certificate when the aircraft is initially inspected and licensed by the FAA. This is where the pilot must look in order to verify whether the aircraft is approved for a particular type of operation (i.e., IFR, aerobatics, etc.)

In order for the aircraft to be approved for IFR operations, the Operating Limitations must contain the following or a similarly worded statement:

?After completion of phase I flight testing, unless appropriately equipped for night and/or instrument flight in accordance with ? 91.205, this aircraft is to be operated under VFR, day only.?

The entry specifies that the aircraft can be operated under IFR once the initial flight test period is complete, so long as it?s equipped in accordance with 14 CFR Part 91, section 91.205. This is the regulation that spells out the minimum equipment required for day/VFR, night/VFR, and IFR flight operations. Normally, section 91.205 would not apply to a homebuilt because it specifically refers to ?powered civil aircraft with standard category U.S. airworthiness certificates". However, the above operating limitation makes it applicable to homebuilts IF you want to use it for IFR.

Paragraph (d) of 91.205 speaks directly to IFR operations:

(d) Instrument flight rules. For IFR flight, the following instruments and equipment are required:

(1) Instruments and equipment specified in paragraph (b) of this section, and, for night flight, instruments and equipment specified in paragraph (c) of this section.

(2) Two-way radio communication and navigation equipment suitable for the route to be flown.

(3) Gyroscopic rate-of-turn indicator, except on the following aircraft:

(i) Airplanes with a third attitude instrument system usable through flight attitudes of 360 degrees of pitch and roll and installed in accordance with the instrument requirements prescribed in ?121.305(j) of this chapter; and

(ii) Rotorcraft with a third attitude instrument system usable through flight attitudes of ?80 degrees of pitch and ?120 degrees of roll and installed in accordance with ?29.1303(g) of this chapter.

(4) Slip-skid indicator.

(5) Sensitive altimeter adjustable for barometric pressure.

(6) A clock displaying hours, minutes, and seconds with a sweep-second pointer or digital presentation.

(7) Generator or alternator of adequate capacity.

(8) Gyroscopic pitch and bank indicator (artificial horizon).

(9) Gyroscopic direction indicator (directional gyro or equivalent).

While much of this regulation is straightforward and self-explanatory, there are a few areas that leave some room for confusion and/or interpretation. Most of the confusion arises from the requirement for certain ?gyroscopic? instruments.