Agree with you about the level of standards, there needs to be some for train and bus parts but not to aircraft standards.

I also agree any part manufacturer to be audited to which level they are working at and prove a chain of custody for that part. They grey and black markets need to be squeezed out as much as possible, obviously you have to give the end customer, airlines, rolling stock owners, etc. a cost incentive with right to repair to honor the system. As any system can be hacked or broken with enough of a cash incentive.

I think the OEM having to license, at a reasonable cost, the exact spec and design for a part to third parties is an important part of any right to repair. You cannot self repair if you cannot get replacement parts for a reasonable cost.