Updated GPS Fix lost ADSB....

[Animosity2k]

So I had a message that the software version of one or more of my SV-GPS-2020 devices installed was out of date and was told to enter the GPS FIX STATUS menu and press load to begin the update process. I pulled the plane out of the hangar and ran and successfully completed the update. When done I noticed I had two errors pop up when I exited the setup menu.

1) Position Source 1 FAIL
2)No ADS-B OUT : GPS LOST

I checked my ADS-B Status menu and it says
DEVICE: SV-ADSB-472
STATUS: NOT FOUND

Any ideas? I'm based out of a towered airport and was supposed to fly somewhere for maintenance tomorrow but I feel pretty confident I no longer have ADSB IN/OUT capabilities...

 

[HFMan]

So after a reboot, it still can't find the ADS-B 472? That is your ADSB receiver- it is not found by the Dynon. Your ADS-B out is probably fine, as the GPS has a good lock and the transponder doesn't appear to have any errors. For some reason the SV-ADSB-472 receiver cannot be found. Go back into your network settings and see if something got buggered with regard to the SV-ADSB-472.

 

[swatson999]

Have you tried the network detection?

 

[Animosity2k]

Have you tried the network detection?

I am not sure what this is, I went back this morning to the hangar pulled the plane out and started it up. I checked my GPS screen and had all green and I think 10 connection points on the GPS.

I went into the ADS-B Status screen and this time instead of STATUS:NOT FOUND. I had STATUS: NO SIGNAL.

I decided to take off and within 2 minutes I had an ADS-B out signal showing. On the ground I couldn't seem to get it (although I did see other aircraft on my ADS-B that were in the pattern above me).

I'm thinking since I had the plane on for almost an hour with no power source during all my updates I may have lost enough power to power up the ADS-B device maybe?

I did not check the ADS-B status page in the air but imagine it would have shown a signal....

I checked my flight on Flight Aware (N716JC) and I can see the entire flight so does that mean that my ADS-B was indeed working? Is there an FAA site device I can use to check it?

Thanks!

 

[swatson999]

That's a pretty random way to make sure your systems are working properly.

First, did you read the installation manual?

Skyview Installation Manual pp. 4-19ff (too detailed to cut and paste here) covers the Network discovery and status options. You should have known how to do this.

You should also know how to get the FAA report on ADS-B compliance (since it's been advertised by the FAA for something like 2 years or more now):

Public ADS-B Performance Report

 

[Animosity2k]

That's a pretty random way to make sure your systems are working properly.

First, did you read the installation manual?

Skyview Installation Manual pp. 4-19ff (too detailed to cut and paste here) covers the Network discovery and status options. You should have known how to do this.

You should also know how to get the FAA report on ADS-B compliance (since it's been advertised by the FAA for something like 2 years or more now):

Public ADS-B Performance Report

I assume the below photo is the page you are speaking of?

 

[Animosity2k]

And I ran the FAA site earlier and it failed

 

[kellym]

And I ran the FAA site earlier and it failed

Your failure is in the air/ground section, not in position. What do you have your stall speed set at? You need the transponder set to "Auto" and it needs to correctly show ground when you are taxiing and air as soon as you are airborne.
You are confusing substantially the ADS-B Out, which uses your GPS-2020 for position and Skyview ADAHRS for altitude and airspeed, etc; versus your -472 unit which is ADS-B in, which is also obviously working because you are seeing traffic. The FAA only cares about the Out portion and that is what your report is giving. The NIC value of 10 is very good for position integrity. You have no errors in anything but the air/ground. You must have an ADS-B ground station within line of sight for it to even see and report on your ground transmissions, or your settings aren't correct and it is seeing you in the air when your unit is in ground mode.

 

[Animosity2k]

Your failure is in the air/ground section, not in position. What do you have your stall speed set at? You need the transponder set to "Auto" and it needs to correctly show ground when you are taxiing and air as soon as you are airborne.
You are confusing substantially the ADS-B Out, which uses your GPS-2020 for position and Skyview ADAHRS for altitude and airspeed, etc; versus your -472 unit which is ADS-B in, which is also obviously working because you are seeing traffic. The FAA only cares about the Out portion and that is what your report is giving. The NIC value of 10 is very good for position integrity. You have no errors in anything but the air/ground. You must have an ADS-B ground station within line of sight for it to even see and report on your ground transmissions, or your settings aren't correct and it is seeing you in the air when your unit is in ground mode.

Do I have to be seen on the ground for it to pass the mandate or just the air? Theres a good chance my transponder was still in ALT from my flight last week, I don't think it defaults back to ground when I land. Could this cause it?

 

[Animosity2k]

Your failure is in the air/ground section, not in position. What do you have your stall speed set at? You need the transponder set to "Auto" and it needs to correctly show ground when you are taxiing and air as soon as you are airborne.
You are confusing substantially the ADS-B Out, which uses your GPS-2020 for position and Skyview ADAHRS for altitude and airspeed, etc; versus your -472 unit which is ADS-B in, which is also obviously working because you are seeing traffic. The FAA only cares about the Out portion and that is what your report is giving. The NIC value of 10 is very good for position integrity. You have no errors in anything but the air/ground. You must have an ADS-B ground station within line of sight for it to even see and report on your ground transmissions, or your settings aren't correct and it is seeing you in the air when your unit is in ground mode.

Matter of fact, look in the photos my XPNDR is set to 1200 ALT ... could that be the cause?

 

[swatson999]

OMG this gets tiresome. IN THE MANUALS:

AUTO (replaces GND, above): Available when the transponder is configured to automatically switch between ALT/GND automatically (see the SkyView System Installation Guide for details). When AUTO is selected, the transponder will automatically switch between ALT and GND modes - reflected in the transponder status in the top bar – using a combination of GPS and air data changes. Defaults to ALT when GPS position is unknown.

(User Manual)

AUTO ALT/GND: Allows the SV-XPNDR-261/262 to automatically switch between Airborne and Ground modes. Available options include:
o NONE: Automatic switching disabled
o SQUAT SWITCH LOW ON GND: Utilizes a physical squat switch connected the SV-XPNDR-261/262 per the above instructions. When this option is selected, the SV-XPNDR-261/262 will consider the aircraft to be on the ground when this switch is low (electrically grounded).
o SQUAT SWITCH LOW IN AIR: Utilizes a physical squat switch connected the SV-XPNDR-261/262 per the above instructions. When this option is selected, the SV-XPNDR-261/262 will consider the aircraft to in flight when this switch is low (electrically grounded).
o AUTOMATIC (AIR DATA): The SV-XPNDR-261/262 automatically determines whether the aircraft is in flight or not by using a combination of GPS and air data changes from SkyView. Note that this option only works with SV-XPNDR-261/262 Software 2.02 or above. See SV-XPNDR-261/262 Software Updates below for more information about updating the SV-XPNDR-261/262 Software. This is the option that most SkyView systems should use unless they are required to use a Squat Switch. If a Squat Switch is installed and connected, this option will cause the Squat Switch to be ignored.

( Installation Manual)

You really should read the manuals and take the time to understand them. Everything you've ever asked about is *in the manuals*.

 

[Animosity2k]

OMG this gets tiresome. IN THE MANUALS:

(User Manual)

( Installation Manual)

You really should read the manuals and take the time to understand them. Everything you've ever asked about is *in the manuals*.

You don't have to respond if you don't like? I saw that section in the manual, but after reading it still don't understand if that means that was the problem. All of that is still a bit confusing for me. I understand what it's saying but I still don't understand if that is the reason I didn't get ADS-B on the ground.

The manual sits right on my table in the hangar, I'm just having trouble making sense of some things.

 

[swatson999]

Transponder settings were pointed out to you previously, in this thread:

INDENTing Issue

So yesterday on my way back to my Airport ATC asked me to IDENT given the excess traffic due to one of our local airports being closed down for students due to a NFL Notam. Anyways, I kept just hitting IDENT on my D100 Skyview it would show IDENT and a # for a bit, then go back to that # with...

forum.flydynon.com

 

[airguy]

You don't have to respond if you don't like? I saw that section in the manual, but after reading it still don't understand if that means that was the problem. All of that is still a bit confusing for me. I understand what it's saying but I still don't understand if that is the reason I didn't get ADS-B on the ground.

The manual sits right on my table in the hangar, I'm just having trouble making sense of some things.

Yes, the ALT setting was the source of the problem on the ADSB report. Set it to AUTO as laid out in the manual. The ATC world was seeing your transponder transmitting as if it was in the air, while your plane was obviously on the ground. This is your ADSB-OUT system.

You receiving ADSB data on the ground is a completely different system - ADSB-IN. This will be your 472 receiver picking up signals, either from other aircraft or from ground stations. Sitting on the ground you will definitely see traffic nearby that is transmitting in the air, and your receiver is picking it up directly. You MAY or MAY NOT seeing weather/lightning/etc since those pieces are transmitted to you from ground stations. If your airplane is not within line-of-sight of a ground station sitting in front of your hangar, then you won't get those pieces until you are airborne and achieve line-of-sight with at least one ground station tower.

And as pointed out above, all this is in the manual. RTFM.