AVSIG: Garmin 430 WAAS Upgrade for M20J wwswsigarch.jpg (7236 bytes)

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AVSIG Discussion Sections >> Mooney

Gerry Coon
Public Guest


Reged: 05/15/04
Posts: 19
Garmin 430 WAAS Upgrade for M20J
      05/16/07 11:57 PM

Has anyone completed the WAAS upgrade on a J model Mooney? I scheduled mine today and they told me to measure from the center of the AI to the left edge of the 430, if the distance is greater than 11.8" it is supposed to need the secondary annunciator. One the Mooney the AI and DG are offset slightly to the left of the center of the control yoke and would not meet the measurement as defined. I'm hoping not to need the secondary annuniciator - anybody been thru this yet? Thanks for any help.

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Why do some upgrades require an annunciator light assembly to be installed?

(Garmin manual 190-00357-02 section 2.5.1.1) The original 400/500 installation manual only gave general regulatory guidance for the distance between the GPS receiver and the pilot's primary field of view. The new 400/500 WAAS install manual is very specific regarding how far the 400/500 series units can be placed from the pilots primary view centerline (11.8" for the 400 series and 12.1" for the 500 series horizontal). Also, the top of the 400/500 series unit can't be lower than the bottom edge of the primary flight instruments (IE Cirrus SR20/22). Any 400/500 units that fall outside of this 11.8" or 12.1" spec will require an external annunciator be installed (near the pilot) to annunciate the various modes the 400/500 unit may be in. The required annunciators are; VLOC, GPS, INTEG, TERM, APR, MSG, and WPT. Since the location of the 400/500 unit is determined by the airframe manufacture avionics mounting provisions, moving the 400/500 series unit will usually not be an option. Garmin has quite a bit of guidance in the install manual on how to determine the pilots primary view centerline, but in general the spec states that the left edge of the 400/500 units must be 11.8" for 400 series or 12.1" for 500 series (or less) to the center of the pilots horizon gyro. Aircraft that have the 400/500 units farther than 11.8" / 12.1" from the center of the horizon, will require the external annunciator to be installed and this will increase the cost of the WAAS upgrade. Penn estimates the cost of the external annunciator + installation to run approximately $875.00 to $1195.00 depending on the existing configurations. Some airframes that have the 400/500 farther than 11.8" / 12.1" from the center of the horizon gyro are: Beech 33/36 series prior to 1984 with the center throw over yoke, Grumman AA5 airframes, Commander C114 airframes, Cirrus SR20/22 (see below).

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Gerry Coon (SEA/S50)

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Entire topic
Subject Posted by Posted on
* Garmin 430 WAAS Upgrade for M20J Gerry Coon 05/16/07 11:57 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J don muncy   12/30/07 04:19 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Gerry Coon   12/17/07 12:26 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Gerry Coon   12/17/07 12:42 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Gerry Coon   06/22/07 11:59 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Gerry Coon   07/09/07 12:20 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ron Rosenfeld (EPM)   06/23/07 06:51 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ed Williams [PHOG]   06/23/07 02:00 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Scott Dyer [HPN/NY]   06/23/07 08:36 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J treploW nellA   07/02/07 04:07 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ed Williams [PHOG]   06/23/07 02:42 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Scott Dyer [HPN/NY]   06/23/07 06:34 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Tom Henderson (KOXR/SoCal)   06/24/07 03:09 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Scott Dyer [HPN/NY]   06/24/07 06:59 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ron Rosenfeld (EPM)   06/24/07 05:01 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ron Rosenfeld (EPM)   06/23/07 06:51 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Gerry Coon   05/19/07 10:57 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ed Williams [PHOG]   05/20/07 02:22 AM
. * * Re: Garmin 430 WAAS Upgrade for M20J Tom Henderson (KOXR/SoCal)   05/19/07 01:15 PM
. * * Re: Garmin 430 WAAS Upgrade for M20J Ed Williams [PHOG]   05/17/07 01:28 PM

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