Quote Originally Posted by Dana View Post
It does, kind of. My operating limitations (issued 2016) say, "After incorporating a major change as described in 21.93, the aircraft owner is required to reestablish compliance..." So even though 21.93 doesn't explicitly apply to experimentals, the definition of "major change" does apply if referenced in the op limitations:
In FAAspeak, that's called "incorporated by reference to"

"A “minor change” is one that has no appreciable effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the product. All other changes are “major changes”... ".