§ 61.58 Pilot-in-command proficiency check: Operation of an aircraft
that requires more than one pilot flight crewmember or is turbojet-
powered.

We could almost argue that since it is a glider, it is not a "turbojet-
powered aircraft." An engine in a glider is used as a launch method,
not "power," as if it had the latter it would be an "airplane"

Maybe too clever......The jet sustainers certainly hinge on the
outcome here

John Cochrane