One week before the maintenance window, all change proposals should have
been submitted. A good way of managing this process is to have all the change
proposals online in a revision-controlled area. Each SA edits documents in a
directory with his name on it. The documents supply all the required information.
One week before the change, this revision-controlled area is frozen,
and all subsequent requests to make changes to the documents have to be
made through the flight director. A change proposal form should answer at
least the following questions.