Piper PA-25 Pawnee — Service Bulletins

This document is an Airworthiness Directive (AD) schedule for the Piper PA-25 series aircraft, specifically focusing on the PA-25 and PA-25-235 models manufactured under FAA Type Certificate No. 2A8 by Lavia Argentina S.A. The document outlines various modifications, inspections, and compliance requirements necessary to maintain airworthiness and safety standards for these aircraft. It serves as a critical reference for maintenance personnel and operators to ensure compliance with airworthiness directives issued by aviation authorities. The directives cover a range of components and systems, including landing gear, fuel systems, and structural modifications, with specific compliance timelines to ensure ongoing airworthiness.

• The document is an Airworthiness Directive schedule for the Piper PA-25 series.
• Modifications and inspections are required for various components to maintain airworthiness.
• Specific compliance times are outlined, such as 50 hours TIS for some modifications.
• The document includes directives effective from as early as 1961 to 2025.
• It covers multiple PA-25 variants including PA-25-150, PA-25-180, PA-25-235, and PA-25-260.