CESSNA 177 — Service Bulletins

This Service Bulletin (SEB-28-04) addresses the installation of fuel placards for the use of very low lead and unleaded aviation fuel in Cessna aircraft, including the Cessna 177. It provides necessary part numbers and installation instructions for compliance. The bulletin is optional and can be performed at the discretion of the aircraft owner. It is important for aircraft with STC engines to consult the STC holder for fuel approvals. The document outlines the compliance requirements and provides a list of affected aircraft models along with their serial numbers.

• The bulletin is SEB-28-04, Revision 1, dated October 19, 2021.
• It applies to Cessna 177 and other models listed.
• Installation of fuel placards for very low lead and unleaded fuels is optional.
• Part numbers for placards are S4374-5 and S4527-4 for very low lead/unleaded fuels, and S4374-6 and S4527-3 for 100LL fuels.
• Compliance requires proper installation and documentation in the aircraft logbook.