Piper PA-34 Seneca — Airworthiness Directives

This Airworthiness Bulletin (AWB) addresses potential corrosion issues in the aileron hinge fittings of all Piper Seneca aircraft models, specifically the PA-34-200, PA-34-200T, and PA-34-220T. The bulletin was prompted by a Service Difficulty Report indicating severe corrosion in a specific part number of the aileron hinge. The document serves as a critical alert for owners, operators, and engineers to ensure the safety and integrity of the flight control system. It outlines inspection recommendations and reporting procedures for any defects found during inspections.

• Inspect aileron hinge fittings for corrosion immediately and every 100 hours thereafter.
• Focus on the section of the fitting enclosed by the aileron during inspections.
• Report any defects found to the CASA Service Difficulty Reporting system.
• Corrosion was identified in part number 3721000 of the aileron hinge.
• This bulletin applies to PA-34-200, PA-34-200T, and PA-34-220T models.