Am 06.12.10 22:23, schrieb Tim Mara:
the Winter 4FGH40 is TSO'd, that's what the EASA Form one is and says
so.....

Just to nitpick: EASA Form 1 is just what it's called: a form. The form
per se doesn't mean an instrument is TSOed, it can as well be written on
the form that it isn't. However, in practice, you're correct: An
instrument usually only comes with a Form 1 when it's TSOed.

EASA Form 1 is the equivalent of FAA Form 8130-3. The USA and EASA
country mutually acknowledge each other's form.