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Citation CJ4
While the CJ4 shares many of the same characteristics as the other 525 models, such as the diameter of the fuse- lage, there are some distinctive differences. The CJ4 was developed just after the Citation Mustang, and you can see some of the same design tenets in the jet, including the cabin door design and more ergonomic flight deck.
The CJ4 is 20 inches longer than the CJ3, the next larg- est jet in the 525 series. With a 12.5-degree sweep on the 50-foot 10-inch wings, along with 3,621 pounds of thrust generated by each of the Williams International FJ44-4A engines, the jet obtains a high-speed cruise (HSC) of 451 knots with a maximum speed of 305 KIAS/0.77 Mach. One of the many strong selling points of the CJ4 is the range. With one pilot, four passengers and full fuel, the jet can fly a maximum NBAA IFR range of 1,926 nm. Pull the throttles back slightly and you can fly slightly further. Even trading fuel for passengers will still yield a range of 1,700 nm with eight passengers – quite impressive.
The CJ4 Gen2 rolls off the production line with virtually all avionics equipment as standard. The one I flew was no exception with all of the options including CPLDC and the Collins RTA-4112 multi-scan weather radar. The RTA-4112 offers sophisticated weather and turbulence detection with an optimized view regardless of altitude or range. Coupled with long-range NEXRAD, also standard, it provides a near complete view of weather. Among the included equipment is TCAS II, which is an option on other jets. Even fully equipped, along with an interior with all of the options, this CJ4 has a full fuel payload of 1,122 pounds.
Gen2 Upgrade
The CJ4 features a much larger cabin door than oth- er 525 jets, and as mentioned, is similar in design to the Citation Mustang entry. It utilizes passive door seals which is just one of the system simplifications that reduces main- tenance. The Gen2 also features a much-improved en- try stair design. Not only are the stairs lighted, but also
feature a sturdy handrail, an additional step for easier en- try, and a projected lower step floodlight that can display a design of your choice. The new entry sets the tone for the interior upgrades.
Textron Aviation offers several unique materials and finishes with the Gen2, which you immediately notice upon entering the jet. The cabinetry is impressive and has an optional AC outlet with enough power to accommo- date your own coffee maker or standard coffee warming tank. And the designers didn’t forget about the pilots. Pilot storage cabinets have been redesigned for easier access from the seats.
In addition to space for a coffee maker, the new galley also has a slide-out countertop to make preparation easier. The surface can be upgraded to granite from a laminate, with a small weight penalty. Owners can also choose between cabinets or side-facing seat combinations, accommodating up to two passengers, installed opposite the entry door.
When you look aft into the cabin, one of the first features you notice is the improved lighting that literally bathes the interior in light. The seats are also upgraded and very comfortable. This particular CJ4 features an interior soft goods upgrade called the Premier Collection Package, which includes detailed seat stitching and an accented overhead console. This package, at $175,000, is a cost-effective method of combining a number of cabin upgrades.
As you venture aft, the standard externally-serviced lava- tory has been improved in the Gen2, including the imple- mentation of two Lee Aerospace CoolView skylights. While only 4 inches in diameter, they do let in additional ambient light above the externally serviced toilet while blocking 99 percent of the UV. Along with the Premier Collection Pack- age, the optional sink with running water is installed as well.
Textron Aviation implemented a software-based cabin management system (CMS) that can control the window shades, dimmable LED lighting, Sirius/XM audio radio, and even the cabin temperature. For those passengers that
12 • TWIN & TURBINE / July 2021
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