Piper PA-24 Comanche 260 — Service Bulletins

This Service Bulletin, SB7100, issued by Parker Hannifin Corporation, provides instructions for upgrading the 3070 (40-5) main wheel assembly from a riveted brake disc to a thru bolt brake disc configuration. It is applicable to specific Piper Aircraft models including the PA-24-260, among others. The bulletin outlines the reasons for the upgrade, which is to enhance the wheel assembly's performance and safety. It includes detailed accomplishment instructions, material requirements, and compliance information, ensuring that maintenance personnel can effectively carry out the upgrade with minimal downtime. The document is intended for use by technicians familiar with aircraft maintenance procedures and is approved for FAA TSO-C26 product support.

• Applicable to Piper PA-24-260 and other models with serial numbers 24-1 thru 24-3306.
• Upgrade from riveted to thru bolt brake disc configuration enhances safety.
• Estimated time for upgrade is 1 to 2 hours per wheel assembly.
• Negligible weight increase of approximately 0.3 lb (0.136 kg) per wheel assembly.
• No special tooling required for the upgrade.