NicoN

Yes, I have it

Thank you! I am also of the opinion that it is not a general problem. 1. HSI can work as a PFD, I checked the auto-revert feature a couple of months ago - IAS and altitude are the same and headings is also fine 2. you can see that the msic. Field CAN indicate the winds aloft. Nevertheless there are rumours that in general the winds aloft calculation might confuse left and right Garmin was not interested in my video but recommended to find a solution with my authorized Garmin dealer. To be honest: my "authorized Garmin dealer" was not able to complete the calibration of the GMU11. They did not even have a secret contact to a Garmin guru to find the solution We are definitely not on the latest firmware (we have 2.62). Wasn't there something that the latest firmware makes my analog NAV2 (KX155) useless? I was hoping that someone says "this problem is solved with FW xyz" or a sophisticated config value

Video to demonstrate th eproblem As you can see, I have winds aloft indication on the PFD and also TAS. The problem for the HSI is also shown

Sorry, my posting was not precise. English is not my native language. And yes - we have OAT, we see as calculated TAS on PFD; that works The Misc. Field on the PFD can display winds aloft in different flavors, such as Headwind/crosswind, windspeed and a little arrow for direction and also windspeed and driection in degress. All work fine on the PFD Same can be configured on the HSI and this time the indication of valid information does not start automatically, but only afetr appling the setting again. then I see the information I want. On top, the setting seems to be volatile; with the next flight the same problem arises - definitely not a real problem but annoying.

GI275 has an option to display a "Misc. Field" in the display of a PFD and also on the HSI. one option is to display wind/velocity in different versions I configured the HSI to display wind direction and velocity. Therefore a little block appears on the display with "360/--"; sounds fine. The aircraft is on ground, so no GPS-Speed or track and also no airspeed. But, while in the air, it did not display the wanted information - still "360/--". Then - while - flying, i configured the same setting again, and voila, now it displayed a value (no clue if correct). on my next flight - same problem again, information is displayed but non-sense. And again, problem can be solved by applying the setting again. Any ideas ? is this a known problem? i did not see that this is addressed by a higher firmware (we have 2.62)

Our A/P wants to overhaul our alternator and/or the slip clutch (?) I saw once in januaray a fluctuatiing indication of our amperemeter (rapidly moving hand, but only about 10% of the meter range). This stopped after a couple of minutes and I have never seen it again.

We have this little panel with 4 fuses in the copilots foot well. One is for instrument lighting. On top there is a C/B for the same purpose. Why?

I was asked from my partner if we (also) have an additional screen filter besides the normal oil filter. The reason for the question: In a PIPER owned by his son horrible things were found in the screen filter

I started this topic a long time ago. I simply noticed that your CDT needle did not move at all A shop diagnosed the indicator as faulty, but it was never changed. Trying to find out what to do, I simply disconnected the sensor and measured the resistance: overload. Then I shortened the wires to the instrument with master switch on - full deflection. So instrument is fine. we then replaced the sensor and CDT is working since then. My experience: during takeoff, at sea level CDT was never an issue. The needle is moving a little but never critical. The higher I climb, the more CDT is rising. I saw situation where I had to lower the power as CDT was approaching the limit temperature.

Right, we also have electrical trim but not auto-trim. So, the answer is: we need THREE servos Next question: We have 2 GI275 installed; do we ONLY need Servos (3) and a mode controller, or do we need another G5 or GI275?

I Recently changed the setting for the MISC.Field on the PFD and the HSI The PFD shows now a direction arrow and wind speed. On the HSI , I configured this MISC Field to indicate Headwind/crosswind, but this shows only two lines of dashes (in the air) The previous setting was TAS and it worked. So, I think the HSI has all necessary information it needs What is worng?

A colleague said, that the GFC500 provides vertical guidance by using the servo not direct on the elevator but using the elevator trim. Therefore he has the idea that you need 2 Servos to have lateral guidance AND vertical guidance including elevator (auto)trim. I thought you need 3

Okay, mission accomplished. Even with a newer firmware, switching between HDG and GPSS mode is not perfect. Using an external switch is way better. But the necessary details are not so easy to get. Her is what I did. 1. The switch needs to be wired to the PFD (the GI275 with ADRHS and Ap interface), not the HSI; which is nice because it is the top device 1a It needs to be a switch, not a pushbutton. The swithc connects to GND in GPSS mode, HDG mode is done when teh switch is open with a pullup-resistor. You do not need an external one. 1b I suggest, install a DPDT version, just to have something ready to drive a indicator lamp; the GI 275 has AFAIk no pin to drive a indicator lamp. 2. Find a discrete-IN pin which is not in use. 2a The discrete pins are spread over the J2751 and J2752 connector. 2b I recommend preferring the J2751 connector over the other. J2751 is the upper connector and therefore easier to access. 2c in my installation the discrete-IN on pin 62 and 63 were not in use, which makes it easier. Pins 60 to 78 are located in the upmost row and pin 60 is the rightmost (easy for people like me who have problems with numbers greater five ) 3 one pin from your switch needs to be installed in location 62 or 63. 3a make sure the pin is inserted all the way (it should not be shorter than the others) 4 the other wire from your switch can be connected to the backshell from your connector or to one of the "Aircraft ground"-pins not in use. But this is way more complicated (number greater five, you know !) 5 Next start your PFD in config mode and go down to DIAGNOSTICS - DISCRETE IN 5a There you should see something happening when flipping the switch 6 NExt go to your autopilot settings (it is way down in the INTERFACES menu) and 6a select DISCRETE instead of BUTTON 6b select the appropriate DISCRETE IN pin 7 leave the menus and power down both GI 275 7a wait 30s without power 8 power up in normal mode 9 You should see your heading bug changing from full to hollow if you flip your switch 10 install the switch. 10a I recommend to install it with the plunger to the left ( to the PFD) indicating HDG mode on and right (to the GNS430 or so) indicating GPSS. Have fun; maybe someone finds that helpful A word to the HD-pins for the 78 pin D-SUB: I was not able to find the turned pins which need this crazy expensive crimping tool. Instead, I found only those stamped ones . They can be crimped with the cheap crimping tools offering an option fro D-Sub. But it takes a good portion of experience before you make acceptable pins which can be inserted correctly. So, under all circumstances, use the turned ones!!!!

Oh yes! GI 275 and GNS430W are playing in a team. This works already. At the moment we are using the touch button on the PFD to switch between HDG mode and GPSS. But you can also put this function to an external switch.

Thank you. My posting was not precise enough. The "pull to ground" is a typical feature of all microcontrollers. INternal pullup drwas the pin to "high". If you short it to GND - fine. Both Gi 275 have some free Discrete IN- pins free for use. So, the question is - on which device do I use/wire the switch? On the PFD? Or on the HSI?