CESSNA 510 Citation Mustang — Service Bulletins

This Special Airworthiness Information Bulletin (SAIB) addresses an airworthiness concern regarding heated drain masts on several Cessna Citation airplanes, including the Cessna 510 Citation Mustang. The bulletin informs owners, operators, and maintenance personnel about the potential for overheating and fire associated with the drain mast heaters (P/N 105881). It provides recommendations for disengaging power to these heaters during ground operations to prevent failures. The document also outlines the background of the issue, including incidents of overheating and fire, and mentions upcoming revisions to maintenance manuals to include safe ground maintenance procedures.

• Heated drain masts (P/N 105881) on Cessna Citation airplanes, including the 510 Mustang, have been linked to overheating and fire incidents.
• The FAA recommends disengaging power to the drain heaters when the aircraft is on the ground and not ready for flight.
• Four failures of the heated drain masts have been reported, with some resulting in visible fires during ground operations.
• Cessna will revise maintenance manuals to include safe ground maintenance procedures for the affected models.
• Contact information for further inquiries is provided for both the FAA and Cessna Aircraft Company.