Thanks Amex/Julian
Regarding the Jepp quote, I wonder if the xponder code given in the initial airways clearance (by delivery) is the same as
except when previously directed
by ATC to operate the transponder on a specified
code.
I can also see Julian's point, which makes sense.
Not meaning to criticize at all here. Just trying to learn from it. This dilemma crops up every now and then in training.