Phoinix, to go back too your point about the vertical display, what ECD are talking about is the VSI to everyone else. On the 135 with the FCDS the VSI is
not a pitot static instrument, but gets its information from an accelerometer in the AHRS.
So if there is a discrepency between the two VSI's; on the RCU you need to switch to the AHRS you think is correct,
NOT switch the ADC.
The problem with that of course, is that you will have a GYRO caption on the CAD if you switch to 1 or gyro and P&R SAS captions if you switch to 2.
