AKD Studios has released the first update of the year for its whole lineup. The v2.21 for GLF550 and v1.02 for GLF650 improve engine performance and MCDU, along with many bug fixes.

The update introduced the new SASL (3.18.0), engine start-up times, and external light improvements for both aircraft, while the 650 received interactive window shades in the passenger cabin, as well as the option to store the RAT. The bug-fixing part brought in various fixes for the MCDU, logic improvements for TCAS, AP, and air condition temperature management.

The full changelog is as follows:

• Added option to stow the RAT(use option in the Menu)(XP11/XP12) - GLF650 ONLY

• Added windows shades in the cabin (XP11/XP12) - GLF650 ONLY 

• Mapped flight number in MCDU to x-plane dataref "sim/cockpit2/radios/actuators/flight_id"(XP12/XP11) 

• Added improvements to Engines Start-UP time(XP11/XP12) 

• Added improvements to external lights(XP11/XP12) • Updated SASL to 3.18.0(XP12/XP11) 

Fixed: 

• Fixed Map line disappears when proceeding to a waypoint with a holding pattern(XP12/XP11) 

• Fixed MCDU Flight plan list page (Part of the text not visible on the screen)(XP12/XP11) 

• Fixed MCDU HOLD page sometimes not working in XP11(XP11)

• Fixed MCDU "Check IRS Position" msg bug(XP11/XP12) 

• Improved logic for changing from IAS to MACH(XP12/XP11)

• Fixed Overspeed sound and Stall warning(XP12/XP11) 

• Fixed minor bugs with air-cond temperature logic(XP12/XP11) 

• Fixed LAT/LONG waypoints entering(XP12/XP11) 

• Fixed display of N2/N1 on EICAS(XP12/XP11) 

• Fixed FMOD clicking sound bug(XP12/XP11) 

• Fixed Custom TCAS logic bugs(XP11/XP12) 

• Fixed Minor bugs(XP12/XP11)

The update can be downloaded via the Skunkcrafts updater, or downloaded from the X-Plane.org store. The GLF business jets are available for purchase at the X-Plane.org store for $44.95.

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