There's more to aircraft maintenance than just the airworthiness regulations.
That's correct mate, Between keeping an eye on working IAW AMM's, SB's, SIL's, PIL's, AIL's, AD's, Mod's, Company Bulletins, AWN's, QB's etc....whilst attempting to maintain the highest standards achievable...
Some of us even have time to get the old tools out and keep the odd A/C in service without getting our knicks in a twist about an RT license