service bulletin

Also found in: Acronyms.

service bulletin (SB)

Advisory notices issued by aircraft, engine, and equipment manufacturers alerting owners and engineers to faults or problems requiring preventive or remedial maintenance, modification, or improvement in product performance. They are often referred to as mandatory by the manufacturer, but they do not have the legal force of airworthiness directives.
References in periodicals archive ?
There are over 500 of the original-design universals in the field, and the service bulletin calls for inspecting and lubricating the part every 25 hours.
You would think there is a service bulletin or even an AD for this, but there isn't.
Once the fix is certified and the service bulletin is approved, the FAA is likely to revise that airworthiness directive.
In fact, a major power steering pump rebuilder recently issued a service bulletin warning shop owners that using the wrong fluid can destroy a freshly rebuilt pump in as little as 20 minutes.
As we go to press in early August, Lycoming, field shops and owners were struggling to clarify a service bulletin that requires inspection and possible replacement of connecting rod bushings in hundreds of Lycoming engines.
The engineering services includes Service Bulletin and Airworthiness Directive monitoring, along with development and tracking of required maintenance planning data, and even parts and components adapted to specific customer needs.
According to a dealer service bulletin published by CivicX.
Service Bulletin 1123B gives the service limits to the steering arm's center pivot bushings and center pivot sleeve.
Jet Aviation has acquired the necessary tools and training at its Maintenance Center in Basel to perform the Pratt & Whitney (PW) Service Bulletin (SB) calling for replacement of the left and right bevel gear oil shield on PW307A engines.