On September 3, 2025, Lieff Cabraser and co-counsel jointly filed a class action complaint in the United States District Court of Kansas against Textron Aviation, Inc. (“Textron”) alleging that a uniform defect leads to corrosion of the structural components of Textron’s Cessna Citation CJ4 aircraft, particularly the frames of the windshield and cockpit windows. If left unchecked, the corrosion caused by the defect can cause the plane to become unairworthy and potentially lead to catastrophic failure.

Read a copy of the Complaint in the lawsuit.

In April of 2024, Textron issued a service bulletin (SB525C-56-01), recommending that all CJ4 aircraft be inspected and, if necessary, repaired due to a condition in the window frames that causes “moisture incursion.” To date, however, Textron has not acknowledged that this “moisture incursion” is caused by a common defect present in all CJ4 aircraft. Nor has Textron warned owners of the significant potential safety risks the corrosion poses. The Complaint alleges that Textron is charging owners and lessees hundreds of thousands of dollars for repairs rather than covering the full cost to fully address the defect.

If you own or lease one or more of the affected Cessna aircraft, we urge you to contact an experienced defect and safety lawyer at Lieff Cabraser today about your legal rights. There is no charge for our confidential review of your case, and the information you provide will help us hold Cessna accountable for all relevant defect dangers and any attendant safety violations.