What are the Aircraft scheduled maintenance intervals may not be escalated

What are the Aircraft scheduled maintenance intervals may not be escalated? 1. Intervals specified by Airworthiness Directives 2. Life limits specified by Type Certificate Data Sheets 3. Certification Maintenance Requirements (CMR) 4. Interval limitations specified by minimum equipment lists (MEL) or configuration deviation Lists (CDL). 5. Structural sampling periods imposed by Maintenance Review Boards 6. Fuel System Airworthiness Limitations and Critical Design Configuration Control Limitations. #aviation #cmr #mel #CDCCL #FAA #EASA #Inspectors