Garmin 430W

[cessnapete]

I am upgrading my G430 to a G430W to enable GPS approaches in a G reg FR182Q. The upgrade comes with a new aerial and EASA paperwork.
I have been told that for EASA IFR approval I have to have a separate CDI annunciator fitted to the instrument panel before use.( very expensive mod apparently)
The G430 already has an annunciator on the set, so why is another needed?, I am confused!
The 430W flies GPS/LPV approaches out of the box, so is the EASA requirement purely for G reg approval? So if on the N reg, the separate annunciator not required.
A friend of mine has a G430W in his N reg Cessna, no separate CDI/Vloc annunciator fitted, and flies perfect GPS/LPV approaches.

[GBEBZ]

Talk to Brian at Bournemouth Avionics

He installed my 430W and installed two LED lights to show if CDI or GPS mode was enabled at the same time he installed my 430W - he made a point of saying they were needed because they were needed by rules...

or google is your friend
http://www.aero-farm.com/ubbthreads/...page=0&fpart=1
http://www.g1000book.com/garmin-430-...formation.html

Finally, depending upon where your GPS unit is located in the cockpit, you may need an external annunciator installed. It turns out that the requirements in FAA TSO-C146a, are far more specific about receiver location than is TSO-C129a, which governs traditional GPS installations. Specifically, the left edge of the 430W can be no more than 11.8" from the pilot's primary view centerline, and the 530W cannot be more than 12.1" away. Also, the top of the 400/500 series unit can't be lower than the bottom edge of the primary flight instruments. If a unit falls outside of this specification, an external annunciator must be installed near the pilot to annunciate the various receiver modes. The required annunciators are: VLOC, GPS, INTEG, TERM, APR, MSG, and WPT.

[S-Works]

I had the lights fitted to my Cessna but am told now that they are not required provided the enunciator on the 430 is visible.

[A and C]

As I understand it you are required to have the annunciation within the normal visual scan of the pilot.

If you have the Garnin CDI most of this is done, as you have an aircraft that is not very wide as long as the 430W is in the centre Avionic stack that would also meet the visual scan requirement it is only if your Avionic stack has migrated to the far right hand side of the panel will you require extra annunciation.

[cessnapete]

Yes I've been told that too. Conflicting info.
Our G430 annunciator is perfectly visible without extra annunciators in my periferal vision, even though its less than an inch out of the dimensions quoted in previous post.
Seems no safety case for a lot of money as usual in aviation!
I think common sense will prevail, and we will upgrade to the G430W and accept it's not officially IFR approved.

[A and C]

If you can find Wigglyamp on here he will be able to give you chapter and verse on this subject.

[stevelup]

Hi

You need to speak to Barry Peat at Gama Aviation (01276 859260). They created the AML STC to enable LPV capability to existing or new GNS430W or 530W installations.

The amendment to remove the need for the additional annunciator where other criteria are met is recent (the past month or so).

Garmin GPS System upgrade adds LPV capability via EASA AML STC (Approved Model List Supplemental Type Certificate) for CS23 aircraft.

The approval of LPV capability is for the following existing Garmin GPS units: GNS530W, GNS530AW, GNS530W-TAWS, GNS530AW-TAWS, GNS430W & GNS430AW. The STC approves the operational use of these units for the LPV approaches in accordance AMC20-28 and other Performance based navigation (PBN) specifications.

(The one-off authorised use of this STC just costs €300 per aircraft registration and includes a Certificate of Design, installation details and Aircraft Flight Manual supplement)

Steve

[wigglyamp]

The recent changes to the annunciator requirements have harmonised Gama's STC with Garmin's version for the GTN750/650 and have now allowed annunciators within the NORMAL field of view instead of the PRIMARY field of view as required by European regulation.

You can find a document listing all aircraft pre-requisites and annunciation dimensions here:

http://www.gamaaviation.com/wp-conte...requisites.pdf

[piperboy84]

I thought garmin made a CDI with integrated source notification that would eliminate the need for stand alone units

[stevelup]

It only shows VLOC / GPS, not the rest of the annunciators, so was insufficient.

[cessnapete]

Thanks for all the info. The aircraft is now having the G430W upgrade. No remote annunciation required. The GAMA STC covers our installation.