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Cessna Citation 525, CitationJet, CJ1, CJ2, CJ3, CJ4, and M2 Series

Amy Wilder

MRO provider SkyWay Group has introduced a lavatory modification for Cessna Citation 525B CJ3 and CJ3+ business jets that enables external waste servicing through a newly installed fuselage panel. Called SkyFlush, the system has received FAA supplemental type certificate (STC) approval.
The modification replaces the original left-hand, belted, self-contained flushing toilet with a new toilet insert designed to pump waste overboard. Requiring no changes to cabinetry or interior accessories, the new unit fits within the existing cabinet structure.
An external service panel is installed on the left side of the aircraft, aft of the wing in the fuselage fairing. The panel includes a 4-inch waste drain fitting, a blue water service port, an LED system status indicator, a power switch for the macerator pump, and a service switch to add water and deodorizer. The design is compatible with standard aviation ground support equipment.
SkyWay noted that variants of the SkyFlush mod for additional aircraft in the Citation 525 series—including the CJ, CJ1, CJ2, CJ2+, and CJ4—are in development and are expected to receive STCs in the near future.
The SkyFlush aims to streamline lavatory servicing processes without requiring structural rework, supporting operators at FBOs and maintenance facilities worldwide.

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In this article

Cessna Citation 525/CJ Series

Textron Aviation

Cessna

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