B737 MAX Series Undifferentiated
Maintenance Airframe; Maintenance Powerplant
Training / Qualification; Communication Breakdown; Workload
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Flight Cancelled / Delayed; General Maintenance Action
Procedure; Human Factors; Chart Or Publication; Aircraft
I bought off Required Inspection Item (RII) steps on [work card]. Flight deck window EFB mod. The windows were removed from the aircraft and on a table in the hangar where the modification was accomplished. I did not recognize that this work was being accomplished on a [B737] MAX aircraft.
While working overtime in hangar [on] RON [aircraft]; I was assigned to the line and had some time until my first plane was arriving. I offered to help Inspector out on Aircraft X because he had a lot of work for one inspector. I told him I would work with Inspector 3 on the EFB sliding window modification task cards. I have performed this task on many 700/800 series aircraft over the last 2 years. Once the jobs were completed I signed off the 3 task cards and went out to inspect my aircraft on the line. [Later] I was notified by my manager that I was not RII on the [B737] MAX aircraft and was not qualified to sign off those EFB task cards. I have been to the Max difference classes but not the X week Max class. I was unaware I wasn't RII qualified on the Max aircraft.Aircraft X #2 sliding window EFB mods were re-inspected by another ZZZ QC inspector in ZZZ1.
Inspector reported performing RII on cockpit windows and EFB installation on a B737 MAX aircraft without proper authority to perform the inspection.