Robinson R22 — Service Bulletins

This Service Bulletin SB-120C is directed towards owners, operators, and maintenance personnel of the Robinson R22 helicopter series. It addresses critical inspection and replacement procedures for the tail rotor blade, specifically for part number A029-2 with serial numbers 11279 and prior. The bulletin outlines compliance timelines for inspections and replacements based on the operational history and environmental conditions of the affected blades. The document emphasizes the importance of these procedures to prevent potential failures due to corrosion, particularly for helicopters operating in saltwater environments. It also includes compliance procedures and approximate costs associated with the inspections and replacements, ensuring that operators are informed of the necessary actions to maintain safety and airworthiness.

• Affected tail rotor blades are P/N A029-2 with S/Ns 11279 and prior.
• Initial inspection must be completed within 10 flight hours or by January 15, 2023.
• Replacement deadlines vary based on operational history, with some as late as February 2025.
• Visual inspections for corrosion must be performed before the first flight of each day.
• Labor costs for compliance are approximately 0.2 hours for inspections and 3.5 hours for replacements.