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Garmin G3X EFIS in a Piper PA28-181

Garmin G3X EFIS display with a Garmin G5 EFIS display configured as a backup for the G3X. GMA345 audio panel, GTN650Xi COM/NAV/GPS, GTX335 ADS-B out transponder and GFC500 pitch/roll autopilot.

The GNC255A COM/NAV2, King ADF/DME was already in the panel. The GTN650Xi, GNC255A and GTX335 may be remote controlled directly via the G3X touch screen (both active and standby frequencies and database lookup is visible on the G3X). The G3X also displays which COM1/2 has been selected on the audio panel. The G3X includes synthetic vision and either a full or split screen function with the map on the right hand side of the PFD.

The G3X has Garmin Connext functionality (Bluetooth) so that the Pilot may use the Garmin Pilot application to upload flight plans to the G3X and GTN650Xi. (The G3X Connext does not support wireless database updates ).

The existing King DME was connected to the GNC255A COM/NAV2 for remote channeling and is also able to display DME data in its display. A Garmin GSB15 USB charger for portable devices was installed on the pilots panel.

Garmin GI275 EFIS, EASA STC Rev 1.

Our latest completed project in a Piper PA28-140 includes a GMA345 audio panel, GTN650Xi COM/NAV/GPS with FS510 WiFi/Bluetooth module, GFC500 pitch/roll autopilot and dual Garmin GI275 ADAHRS units with internal battery backup in both units. The existing King KT74 transponder was connected to the GTN650Xi for ADS-B out. The latest revision of the GI275 EASA STC’s allows that all analogue instruments may be removed (except the magnetic swing compass).

Garmin parts and extended lead times

Garmin recently announced extended lead times for many of their baseline aviation parts such as GTN, GNC, GTR, GNX, GTX345 etc due to parts supplier issues. Currently all existing and new orders are subject to a 6 month lead time (that might be extended). Other parts like G5, GI275, GFC500, G3X, GTX335 were parts are available still suffer from extended delivery times, in some cases up to 14 weeks.

Garmin also states that dealers should not start any installations until it is confirmed that all necessary parts have been shipped from Garmin.

This means that we will need to re-evaluate our waiting list and prioritize customers that are looking for parts that are available like Garmin G5 and GFC500 installations.

Garmin GI275 EFIS vs Garmin G5

So what is the difference?

GI275 contains everything inside the unit (no extra boxes are required for the standard installation ADI/HSI). Its mounted from the behind in an existing instrument hole, it’s the “real thing” when it comes to build quality solid aluminium chassis (in some cases heavier than a traditional VAC driven directional gyro), TSO certified, it has Connext wireless capability, touch screen, internal VFR GPS (if enabled), capable of displaying synthetic vision (option), internal navigation/terrain/obstacle databases, can interface to almost everything and if you have 2 ea GI275 ADAHRS you can remove existing airspeed, altimeter, turn coordinator, vertical speed indicator and possibly also existing NAV CDI’s.

The Garmin G5 need’s a separate OAT module (GAD13), it need’s a separate ARINC adapter (GAD29B) that connects the GTN/GNS GPS and NAV to the G5, you will need to keep the basic T intact (airspeed, altimeter, turn coordinator and vertical speed indicator can not be removed).  However the G5 has 3 advantages over the GI275 and that is excellent integration with the GFC500 autopilot (the G5 and GFC500 is practically built as a system made for eachother), much lower weight (the weight of the GI275 may be an issue in some aircraft instrument panels) and the lower price? Well the G5 is quite expensive compared to the GI275 if you also take into account all the features that the GI275 EFIS offers.

One common good thing for both GI275 and G5 is that you can most likely remove the existing VAC system. (G5 can not emulate the attitude signals that the Century autopilot requires but then again, a Garmin GFC500 autopilot is the way to go).

Garmin Flight Stream FS210 Bluetooth interface for legacy units (GN430W/530W)

The Garmin Flight Stream 210 Bluetooth interface has been available for many year’s however not that many know that this unit may be installed and connected to an older device such as the Garmin GNS430W COM/NAV/GPS.  The FS210 enables flight plan transfer between the GNS430W and a portable device with the Garmin Pilot software package. The FS210 has a built in AHRS (attitude heading reference) and the aircraft’s attitude may be displayed in the Garmin Pilot application. The FS210 does not have the capability to update any databases and if you have a Garmin GTN series navigator we recommend the Garmin Flight Stream FS510 that contains both Bluetooth and WiFI (for database updates). The FS510 simply slides into the SD card slot located in the front panel of every GTN series navigator making the physical installation very simple. The FS210 may also be interfaced with legacy Garmin G1000 systems (GDU display unit software version 15.00 and above)

Garmin GPS175 a replacement for Bendix/King KLN89B/KLN94

In this case the customers existing GPS KLN89B basically was out of service and the aircraft already had a King KX165A 8.33kHz COM/NAV and a Trig TT31 Mode-S transponder. The most affordable solution was to replace the KL89B for a Garmin GPS175 in the same location. In this particular case the installation was limited to VFR only since the annunciator/relay unit does not support glide slope which is required for a full IFR installation. The GPS175 was also connected to the TT31 transponder for ADS-B out. The GPS175 has a built in Bluetooth interface  that enables the pilot to send and received flight plans via the Garmin Pilot software for portable devices such as an Ipad.

Garmin G5 EFIS… the new standard?

Most of our installations today include at least one Garmin G5 EFIS display. Many pilots really like the  G5 but then again the Aspen E5 is a strong competitor. If you have a Garmin audiopanel, Garmin navigator and perhaps in the future – plan for a Garmin GFC series autopilot.. well then the Garmin G5 EFIS is a must. However if you already have a good working autopilot like the S-tec 55X or dual axis KAP140 then you might choose the Aspen E5 instead of the Garmin G5.

Garmin GFC500 autopilot, again?

For about a year ago we installed some Garmin Avionics in a C172. The customer was quite sure that they wanted a Garmin GFC500 autopilot in a couple of years or so we prepared the aircraft with the necessary wiring for the servo’s. Well now a year later the GFC500 was installed below a picture of the layout.

Aspen E5 EFIS / Garmin GNX375 GPS and ADS-B in/out xpdr

The old King KLN94 GPS and KT76C transponder was replaced by the Garmin GNX375 a combined WAAS GPS navigator and ADS-B in/out transponder. The attitude indicator, directional gyro and VAC system (dual VAC pumps) was removed and replaced by a Aspen Avionics E5 EFIS with “advanced features unlock” that includes OAT and winds. The GNX375 has an internal bluetooth transceiver and built in backup AHRS (requires an Ipad and the Garmin pilot software) so we also installed a RAM mount for portable electronic devices and a Garmin GSB15 dual port USB charger.