As BillieBob says except Part-FCL uses the term "authorise", not "send"
or "release"
Also, I cannot find reference in
FCL.910.FI FI - Restricted Privileges to
where it says a Restricted Instructor cannot authorise a student's first
night solo.
Anyone care to point to where this is stated, thanks?
So:
I'm preparing the student for solo, my supervisor making a check ride
with him and if everything is ok we release him for solo. And I can put
into my papers that I released student to solo flight
Your supervising instructor authorises student's flight. You cannot as it
is their first solo - There is no "
we" - an individual instructor authorises
the student.
Next day the same student needs to fly solo again - do I need a supervisor
to release him for solo?
Not first solo so you can authorise - but only if your supervising instructor
agrees (discuss it with them beforehand).
As an "owner of fresh FI(A) rating " you must just have finished your
FI course - you should have been taught this.
If you are unsure of anything then ask your supervising instructor, that
is their job/responsibility - they may not like you gaining "advice" from
an anonymous forum.