Marc Ramsey wrote:
Here's an example from some Operating Limitations circa 1998:
7. This aircraft shall not be flown unless it is inspected, maintained and
operated in accordance with appropriate technical publications as
follows:
Flight Manual for the ELAN/GLASER-DIRKS, DG-300 ELAN ACRO,
dated 5/92, as revised and the Maintenance Manual for the
ELAN/GLASER-DIRKS, DG-300 ELAN ACRO, dated 5/92, as
revised.
I've owned four experimental gliders over the past 10 years, and they all had
this same basic wording. It is apparently part of the boiler plate Ops Lims in
whatever Advisory Circular the FSDO uses to put these things together...

FWIW mine - circa 1986 from TX - has no such statement, only "no person
may operate
this aircraft unless within the preceding 12 calendar months it has had
a condition inspection performed in accordance with Appendix D of FAR
Part 43 and was found to be
in a condition safe flight".