NO!! Absolutely not. The manufacturer doesn't have this authority. If the manufacturer wishes this bulletin to become mandatory, then the manufacturer must petition the FAA to make it an airworthiness directive. Until then, it's a nice idea, but is not required by the regulation.If the manufacturer states the SB to be mandatory then non-compliance would make the aircraft un-airworthy correct?
They do not.Essentially a mandatory SB and a AD have the same effect,
The FAA has the authority to make it a legally required, and thus mandatory requirement. The manufacturer does not.difference being one is issued by the manufacturer and the other by Aviation Authorities.
Incorrect. Only if the manufacturer includes the service bulletin as part of the approved inspection program, and then only when it's part of the official FAA documentation (eg, part of the maintenance manual and an accepted document). Simply stipulating a service bulletin outside the program, after the fact, is insufficient to require it's inclusion.If the aircraft is operated under 91.409(f)(3) for it's inspection program (which is an option that applies to large airplanes that are turbine powered and turbine powered rotorcraft) than a Mandatory SB issued by the manufacturer must be complied with.
Thanks Avbug I called one of the DAR's I use and asked him to clarify this last night he said most country's require all manufacture SB's to be complied with. When he gets the application for the Export C of A he pulls the country's requirements for Airworthiness and import requirements.In the case of an export, however, the matter of a manufacturer's election to include the word "mandatory" is irrelevant, and the requirement for compliance varies, as well with the destination, and sometimes with the origin. This is not the case for an import.