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I have a GI 275 installed as my primary HSI. The plane just came out of Annual, and I am now getting intermittent heading failures. When indicating a heading failure, TRK is displayed. However, when HDG Failure is not indicating, the heading is off by over 60 degrees. This is a new issue...

Garmin recently published Service Advisory 20112 Rev A stating that the AHARS magnetic model expired and needs to be updated. The GI-275 is supposed to give you the option to update it when you install a new nav database, but mine did not. Garmin was worthless answering the basic questions of...

I have a GTN-650 and a GI-275 configured as a Primary HSI. I need to renew my Garmin subscriptions. For $299, I can be IFR legal by just getting the 650 Nav database vice the $650 OnePak that updates everything. Has anyone chosen to only update their GPS database? Any issues navigating off...

I have a GI-275 as Primary HSI, so it has the required backup battery. For the annual Backup Battery Test, can the pilot sign that off, or does it need to be an A&P/IA? Is any log book required? Garmin Technical Service said they THOUGHT it was pilot performed with no log book entry required...

I installed a GTN 650 with a FlightStream 510 in June. Every time I try to update the databases, they will smoothly transfer to the 650 via Database Concierge, but then some randomly fail to go active On their effective date, giving the error message “Database corrupt or not active.” I spent...

I installed a GTN 650 into a single engine aircraft. I know it’s super minor, but the icon on the GTN map is of a twin. Anyone know how to change the ownship icon? Thanks.

I just installed a GTN 650 loaded with 6.70. When I looked at the Flight Plans settings, there is no option for VNAV anywhere as there should be per the instruction manual, and I couldn’t find VNAV anywhere. Any ideas why the options simply aren’t there?

I am getting a GTN 650 with a Flightstream 510. How much space does a Database Concierge update take up in the iPad for a US update of all databases included in OnePak? Just trying to see how much space Garmin Pilot will need on my iPad to use Database Concierge. Thanks.

I am installing a GTN-650 and got the green light from my wife to upgrade our audio panel (currently an ancient Narco unit) at the same time. I have narrowed it down to two options, the GMA-350C and the PMA-450B. My avionics installers are recommending the 350C because they (and their...

I got the Stratus ESG with connectors that allow it to feed a remotely mounted Stratus 2S with ADS-B information. Does anyone know if these connectors would work with a GDL 39 or GDL 50 to allow the unit to be remotely mounted and be fed the required information and power through the ESG...

Can the 430W hold the nav database for the whole United States? If not, where is the cutoff between East and West? Could I fly from Virginia to Colorado on one nav database, or would I need to swap mid flight? Thanks.

Has anyone installed a GI-275 yet? I see it is compatible with a GTP 59 OAT probe, but can’t find anywhere that says if it actually displays True Airspeed. The manual only says it “calculates TAS.” Does anyone know if TAS can be displayed on a GI-275 configured as a primary ADI? Can TAS be...

I currently have a Narco CP 136 TSO Audio Panel. It works fine connected to a KX-170B and an MX-170C. I want to add GPS capability, and am looking at adding the GNC 355 so I can also get at least one modern com radio. Does anyone know if the GNC 355 will connect to the old Narco 136, or will...

I am looking for a recommendation for an audio panned that has separate intercom squelch control for the copilot position and the passengers to install in my Debonair. My wife in the copilot seat is so quiet she needs the squelch all the way up to hear her, but my daughter in the back seat is...

I am considering installing a GNS 355. When using Garmin’s IPad trainer to check it out, I noticed that altitudes do not display next to the waypoints on an approach like they do in the GNS 650. Does anyone flying with a 175/355/375 know if the altitude displays next to waypoints on an...