Does anyone know if I am to register with the TSA for my commercial single engine? I was required to get clearance prior to starting my PPL and IR, but according to AOPAs guide on the TSA process, I need not get a clearance for CPL. I do need one for multi engine.

Additionally, do I need to get clearances for obtaining CFI or CFII, MEI etc? Each application is worth $130 bucks, and I truly hope I only need one more for my multi.
Thanks!
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