EASA SIB CE-11-12R1
Piper PA-28, PA-32, PA-34, and PA-44 - Wing Rear Spar Corrosion at Fuselage Attach Fitting
Summary
The Special Airworthiness Information Bulletin FAA SAIB CE-11-12R1 addresses potential corrosion on the wing rear spar at the fuselage attach fitting of Piper PA-28, PA-32, PA-34, and PA-44 airplanes. It highlights the risk of corrosion on specific parts including steel plate 66762-00 and aluminum aft spars, and references Piper Service Bulletins 789A, 977, 1006, and 1244B for inspection and mitigation. This bulletin is informational and does not mandate regulatory action.
What Changed
This revision CE-11-12R1 adds references to Piper Service Bulletin 1244B and includes minor editorial updates while retaining all previous information. It emphasizes the importance of repetitive inspections and repair options introduced in SB 1244B for the wing rear spar corrosion issue. No new mandatory requirements or airworthiness directives are introduced.
Why It Matters
This bulletin is important for aviation professionals because corrosion on the wing rear spar can compromise structural integrity and safety of affected Piper aircraft models. Operators and maintenance organizations need to be aware of the risk factors such as aircraft age, environmental exposure, and maintenance practices that can increase corrosion likelihood. Early detection and repair help maintain airworthiness and prevent costly damage or unsafe conditions.
What To Do
Owners and operators of Piper PA-28, PA-32, PA-34, and PA-44 airplanes should incorporate inspections and corrective actions from Piper Service Bulletins 789A, 977, 1006, and 1244B within 100 flight hours, prioritizing aircraft at higher risk due to age or environment. If corrosion damage is found, repair or replacement is necessary and a Service Difficulty Report should be filed with the FAA. Proper maintenance and painting procedures should be followed to minimize corrosion risk.