tom paul
Active Member
I have a Garmin G5 in my panel which has replaced a mechanical DG/HSI.
I was told by the prior owner, who installed the G5, that it is only connected for use as an HSI, not as a PFD.
I am having two issues with it, one of which seems to be getting progressively worse.
One, it often displays an incorrect heading on start up. It may be 100 or more degrees off the mag compass. A reboot of the G5 has always fixed it, until the other day.
Two days ago, I went for a flight to get my oil hot enough to drain, and I almost didn't take off because the G5 was not coming on line at all.
It first booted up displaying no numbers at all. Just a blank periphery where the heading digits should be. Multiple reboots later, it would display numbers, but erratically jump around for a few seconds, eventually settling on a number about 40 degrees off from the mag compass. I fly with an Aera 660 GPS and rarely use the HSI. (I have yet to use the autopilot) so I thought "I don't need the HSI today" but my concern was more about what was behind the issue that might affect other systems that I DO need. I was considering aborting the mission, but I went ahead with the runup in the meantime. Once that was done, the HSI started indicating accurately and no longer jumped around. I flew without issue.
Any thoughts about what might be going on here?
The other issue is that when I pull more than 1.5 G or so, the G5 defaults to PFD mode and has to be reset to HSI mode manually.
This is consistent behavior.
Looking forward to your thoughts. I have yet to contact Garmin, but that is my next move.
I was told by the prior owner, who installed the G5, that it is only connected for use as an HSI, not as a PFD.
I am having two issues with it, one of which seems to be getting progressively worse.
One, it often displays an incorrect heading on start up. It may be 100 or more degrees off the mag compass. A reboot of the G5 has always fixed it, until the other day.
Two days ago, I went for a flight to get my oil hot enough to drain, and I almost didn't take off because the G5 was not coming on line at all.
It first booted up displaying no numbers at all. Just a blank periphery where the heading digits should be. Multiple reboots later, it would display numbers, but erratically jump around for a few seconds, eventually settling on a number about 40 degrees off from the mag compass. I fly with an Aera 660 GPS and rarely use the HSI. (I have yet to use the autopilot) so I thought "I don't need the HSI today" but my concern was more about what was behind the issue that might affect other systems that I DO need. I was considering aborting the mission, but I went ahead with the runup in the meantime. Once that was done, the HSI started indicating accurately and no longer jumped around. I flew without issue.
Any thoughts about what might be going on here?
The other issue is that when I pull more than 1.5 G or so, the G5 defaults to PFD mode and has to be reset to HSI mode manually.
This is consistent behavior.
Looking forward to your thoughts. I have yet to contact Garmin, but that is my next move.