ISSUE DESCRIPTION
Description of the issue: During a flight the HSI gyro heading drifts without any way to realign the HSI. The gyro drift rate is about 10° right per hour. The offset appeared after an hour of flight and remained constant at 1hr40min, appearing to only increase at full hour increments.
Gyro drift occurs with Gyro Drift Compensation setting “Disabled”
Keybinds for Set/Increase/Decrease Heading Indicator Drift do not realign the HSI in the DHC6.
FREQUENCY OF ISSUE
How often does this occur for you (Example: Just once, every time on sim load, intermittently)? Every time after an hour.
REPRODUCTION STEPS
Please list clear steps you took in order to help our test team reproduce the same issue:
- In Settings > Assistances: Ensure Gyro Drift Compensation is not checked.
- Select the DHC6 in Free Flight.
- Fly for greater than one hour.
- Observe the HSI gyro drift is ~10° right of the whiskey compass, EFB reported heading, or auto pilot heading mode selected heading.
- Observe there is no way to correct the HSI alignment.
YOUR SETTINGS
Issue still occurs with no mods and add-ons.
What peripherals are you using, if relevant:
[PC Only] Are you using Developer Mode or have you made any changes to it? No.
[PC Only] What other relevant PC specs can you share? SU3 1.5.27.0 DHC6 v 5.27.0
MEDIA
Gryo Drift Compensation Disabled
HSI shows 273 while heading is 263 (shown in EFB, set in AP heading hold).
