We just received this Legal Interpretation on Whether Supplemental Inspection Documents Issued by Aircraft Manufacturers Are Mandatory. The Legal Interpretation answers six specific questions and is attached. The general theme of the response is:
"if an aircraft owner or operator had selected and identified in the aircraft maintenance records a current inspection program recommended by the manufacturer before the date Cessna issued the SID at issue, then the program was current without the SID when the owner or operator adopted it. Therefore, for that owner or operator the SID is not mandatory. However, the owner or operator who adopted the program before the SID was incorporated into it may elect to incorporate the additional requirements of the SID into the previously adopted program. In that case, the inspection program with the SID would be the "current inspection program recommended by the manufacturer," and it would be:mandatory for that owner or operator."
Does this guidance on what a "Current" maintenance program is effect how you operate? Your customers?
How do you manage maintenance if every customers is on a different version of the maintenance program?