I haven't had the privilege of instructing at a club where new glass
shows up regularly and these sort of checkouts are required by
insurance companies. I assume that Costello does not accept a cockpit
checkout to be endorsed by a non CFI-G? I wonder if they'd be willing
to waive that requirement on a case by case basis. As an instructor
i'm a bit hesitant to sign off on instruction that i didn't do or am
not really qualified to do. but thats just me.