Its not run by the IAM, it has an independent trustee appointed by the board which is half IAM appointed and half company appointed who pay into the plan.
I'm an A&P certificated mechanic, I've spent the largest part of my life fixing things with wings. I may be wrong, but the way I understand your IAM NPP: if I work in the industry, my pension can be stopped until I no longer work in the industry.
How does the IAM National Pension Plan, for the total NMB recognized class and craft of Maintenance & Related, define working in the industry?