It has been a while since our last official update on our implementation of the Citation C680 Sovereign+. We are thrilled to share our progress with you.

The project has come a long way and has gone through numerous stages, each better than the last in every aspect. While today is still not the day we are all waiting for, the announcement of a release date, that long-awaited day is definitely approaching. The wait will be worth it!

So, enough with the chitchat, let's get to the details! In an effort to showcase our ambition, attention to detail, and excitement, we've prepared a feature list. A *very* comprehensive feature list. So comprehensive, in fact, that it refuses to fit in this message. Thus you are welcome to have a look at the PDF below. In the meantime, a summarized version follows here:

**Aircraft Systems**

* **Electrical:** Detailed bus logic with 170+ simulated circuits. Includes battery temp, ground power logic, and interactive circuit breakers.
* **Anti-Ice:** Fully simulated system for wings, engines, stabilizer, and windshield with temperature monitoring and CAS alerts.
* **Bleed Air:** Accurate pneumatic layout with APU integration, auto source selection, and links to ECS/anti-ice.
* **Fuel & Hydraulics:** Realistic fuel crossfeed/pump logic. Hydraulics model accumulator gas/fluid dynamics and parking brake.
* **FADEC & Autothrottle:** Thrust limits for all phases, TO servo logic, and accurate FMS speed cruise data.
* **Pressurization:** Automatic control with separate cockpit/cabin temperature zones.
* **Datalink:** Fully simulated ACARS/CPDLC (FANS 1/A+/ATN B1) with SATCOM/VHF modeling. Handles D-ATIS, clearances, weather, and ADS-C.
* **Other Systems:** Oxygen/water usage with state saving, control locks, and a Takeoff/Landing Data computer for V-speeds and distances.

**G5000 Avionics & EFB**

* **Synoptics:** Dedicated pages for electrical, fuel, hydraulic, and system summary.
* **GTC (Central Control):** Manages datalink (D-ATIS, TELEX, oceanic clearances), TOLD computer, cabin management (lights/temp), and system tests/status.
* **Crew Alerting:** CAS with configurable inhibit states (TOPI/LOPI/ESDI) for all major systems.
* **EFB Tablet:**
   * **Service:** Manages payload, ground services, and system states (hydraulics, fluids, oxygen & more).
   * **Flight:** Displays SimBrief OFP.
   * **Checklists:** Normal procedures (abnormal/emergency planned).
   * **Settings:** Aircraft configuration, simulation options, and SimBrief integration.

**Visuals & Performance**

* **Model:** Numerous interactive exterior panels (doors, service points) and cabin details. Optional ground equipment (GPU, fuel truck) and visible crew.
* **Performance:** Reported by testers to be in line with default MSFS aircraft.
* **EFB:** Feature rich and intuitive implementation for aircraft control, flight planning, and checklists.

That being said, let's finalize this development update with some clips that showcase some of the G5000's functionality!

**Slide 6: System Test Page**

 All of the system tests will be simulated and give feedback. For example, stall warning will trigger the stick shaker.

**Slide 7: ACARS DCL Page** 

Departure clearance demo. The first three fields will be filled in automatically depending on the route and aircraft/flight id.

**Slide 8: ACARS Datalink**

 Shows a preview of disabling the ACARS, note the system message due to the disconnect.

**Slide 9: G3000 GTC ACARS** 

A preview of the ACARS pages.

**Slide 10: Hydraulics during startup** 

Shows the engine to pressure correlation as well as the startup behaviour of the hydraulic system.

to follow the development progress feel free to check out the[ discord!](https://discord.gg/FqBVCMKr)

We wish you a lovely weekend and look forward to hearing from you!

Skyward Simulations C680 Soverign update