The system will not “descend to climb” or “climb to descend”.
Once set via the IAS bug and engaged, the autopilot will adjust the aircraft flight path angle as required to track the commanded IAS. (DFC90, 100) How does IAS mode work? Just like VS mode, IAS mode can be used to follow a commanded indicated airspeed as set by a new IAS bug or it can be used to perform an altitude capture at a specified airspeed. Finally, the Flight Director becomes much easier to use and follow. Thirdly, they add new modes such as IAS (Indicated Air Speed) mode. Secondly, they add some very specific safety features such as Straight and Level and Envelope Protection. no overshoots, no wandering, no divergent behavior inside the FAF, etc). (updated 17 April 2012) (DFC90, 100) What are the main features of these autopilots? First and foremost, since it is taking advantage of the on-board PFD digital ADAHRS, they are able to provide a much more precise operation (e.g. Architecturally, the DFC90 autopilot takes its input from the Avidyne or Aspen PFD and the Garmin 430s (or GPS/Nav/Coms connected to the Aspen PFD) while the DFC100 is driven by the IFD and the Avidyne FMS 400/900w system, and the DFC100 system communicates to the rest of the R9 system via the Byteflight digital databus while the DFC90 does not. Functionally, the DFC100 supports the R9 Vectors mode and it adds a VNAV capability. DFC90 and DFC100 FAQs Updated 26 June 2012 General Questions (DFC90, 100) What are the main differences between the DFC90 and DFC100? There are two functional differences between and the autopilots and two architectural differences.