 The Citation XLS+ features Collins Pro Line 21 Avionics and a four screen LCD EFIS display as opposed to the three tube (CRT) Honeywell display in the XL and the three screen LCD Primus 1000 in the XLS.Rather than being a direct variant of another Citation airframe, the Excel was a combination of technologies and designs.To produce the Excel, Cessna took the X's wide, stand-up cabin fuselage, shortened it to about and mated it with an unswept wing utilizing a supercritical airfoil (based on the Citation V Ultra's wing) and the tail from the Citation V.
The Excel has the roomiest cabin in its class of light corporate jets and can seat up to 10 passengers (in high-density configuration; typically the number is six to eight in a corporate configuration), while being flown by a crew of two.