Embraer Phenom 100/300 (Prodigy system) with GDU software version 13.04 and 14.02 are affected.
Pilot actions may result in a momentary lateral shift of SVT on the PFD, accompanied by a change in FMS-coupled AFCS modes.
Do not perform the following actions during critical phases of flight (e.g. short final):
Make changes to a flight plan
Activate a flight plan leg or a Direct-To
Select OBS mode or change OBS course
Access the TMR/REF page
If a change in FMS-coupled AFCS mode is observed, select the desired AFCS mode.
Initiating a go-around or missed approach during critical phases of flight may result in a momentary lateral shift of SVT on the PFD. Initiating a go-around or missed approach will also result in the AFCS transitioning to GA mode. This AFCS transition is normal and no additional pilot action is required.