Parmesan

Sounds great!

Thank you for answering, Philip! Although, you seem to have misunderstood my problem, or I'm bad in explaining my problem The HSI CDI is fine. I tune the CDI to the navaid and radial I want to follow and I'm aware of how to set the CDI correctly. However, the Heading of the HSI does not match the GPS. This is made in zero-wind conditions where the track and heading are supposed to be identical. At the beginning of the flight, the heading and track match (zero-wind) correctly. After I have been flying for some time, the HSI seems to wander, i.e. the heading does not match the track of the GPS (still zero-wind). The difference can be quite large, which makes instrument flying difficult. Let's say I want to follow a track of 090° in zero-wind conditions - I need to use heading of 080° or maybe even 070° in order to maintain the track - the difference is 10-20° off, which is not supposed to be. Best regards, David

Hello! I recently bought the beechcraft duchess and I'm wondering about the HSI. It seems to be wandering, or something else, since all my holdings/approaches, after a certain time does not add up. The GPS says my track is something which makes no sense. After restart the problem seems to restore itself. I read the POH and says the HSI should be a fixed card. Am I doing something wrong? Is HSI "fail safe" and should stay the same way throughout the flight, considering no settings have been changed? I attached a picture of the HSI, which indicates a heading of 199 degrees, however, the GPS indicates a track of 189 which is the correct bearing at my current position. The HSI indicated 189 before take-off and has rotated through 10 degrees during flight, now showing 199. Is there any way to solve this problem? Thanks in advance! Attaching a picture of the GPS and HSI so you can see how the numbers don't match