Safety recalls never expire.
Service programs or notifications have an expiration date, as they are generally just warranty extensions on certain parts.
TSB's have nothing to do with this subject. They are simply additional repair or parts info.
I asked a ref if he could give me a technical foul for thinking bad things about him. He said, of course not. I said, well, I think you stink. And he gave me a technical. You can't trust em. -
"One of the reasons I left Sabbath is Van Halen was blowing us off the stage every night. It was embarrassing." Ozzy