Piper PA-11 Cub Special — Service Bulletins

This Service Bulletin No. 868 from Piper Aircraft Corporation addresses a critical safety issue concerning the Forward Fuel Header Tank in the Piper PA-11 Cub Special and PA-18 Super Cub models. Following accident reports indicating potential ruptures of the fuel tank, which could exacerbate post-crash fires, the bulletin mandates compliance with the installation of an improved fuel tank. The new tank features thicker walls and welded seams for enhanced strength. Compliance is deemed mandatory and should be performed as soon as possible. The bulletin also provides instructions for the installation of the new tank and emphasizes the importance of logging compliance in the aircraft's records.

• Affected models include Piper PA-11 Cub Special and PA-18 Super Cub.
• Compliance with this Service Bulletin is mandatory and should be completed as soon as possible.
• The affected serial numbers for PA-11 range from 11-1 to 11-1678; for PA-18, from 18-1 to 18-8109086.
• The installation of the improved Forward Fuel Header Tank is necessary to prevent potential ruptures during accidents.
• The new tank (Piper Part Number 60763-02) features thicker walls and welded seams for increased strength.