Who issues service bulletins (SB)?

Original Equipment Manufacturers (OEM) are responsible for issuing service bulletins. These bulletins are critical communications that provide vital information about maintenance, repairs, safety enhancements, or operational changes related to the equipment or products they manufacture. The purpose of a service bulletin is to inform users of specific actions that should be taken to maintain safety and performance standards.

Service bulletins typically include instructions for inspections, modifications, and other technical guidance necessary to ensure the continued airworthiness and operational reliability of the equipment. Because OEMs hold comprehensive knowledge about the design and function of their products, they are best positioned to issue these bulletins, ensuring that all relevant stakeholders receive the most accurate and authoritative information regarding maintenance practices.

This direct communication from manufacturers helps to ensure that any potential issues are addressed promptly and effectively, thereby supporting the safety and efficiency of the fleet. Understanding the role of OEMs in this context is vital for anyone involved in aviation maintenance and operations.