DH altitude alert will be in next update
Engine fan at TO thrust I have sound for this on my side, check your sound sliders in X-Plane?
No gear noise from retract/extend see above
Wind noise seems to be lacking (it sounds the same at 250 kts as sat not moving) see above
AP disconnect sound is extremely quiet see above
Battery overheat test doesn't work this was only a thing for very early CJs before their batteries got replaced. This test doesn't do anything anymore, as with the real aircraft.
HDH mode (heading hold?) doesn't work as expected. Expected behavior: capture heading at moment of AP engagement check your turn knob, this behavior is working on my end
DME speed and time stops working and displays zero, or constantly counts from zero to the value then resets to zero this is based on radio reception. Are you on the ground when this occurs?
DME speed and time sometimes only reads zero regardless of changing frequencies, etc. see above
Some switch have the wrong number of positions (e.g. some 2-position switches have 3 positions) what switches?
After the first engine start, BOTH start lights illuminate with second engine start this is expected behavior for the aircraft. The second engine uses the first engine to start, and is indicated in this fashion.
Engine spool time/EGT peak is unaffected by battery health this is something on the list we are looking to see if we can modify the XP engine model to be affected by
GPU start current limiter has no effect voltage should droop considerably when under the current limit