B737 MAX Series Undifferentiated
Maintenance Airframe; Maintenance Powerplant; Other QC inspection
Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
Procedure
My supervisor brought to my attention that I signed off on W/O XXXXXX that was attached to Aircraft X.  I signed the Inspection and RII blocks on this window modification paperwork.  I have attended RII class; but not MAX difference class so I was not qualified to sign these items off on a MAX aircraft.
Technician reported signing off on a work order but not being qualified to do so.