John Theune wrote in
news:kwnvh.2765$Hb6.1352@trndny02:

Judah wrote:
Roger wrote in
:

That is not an option. The parent can not take responsibility that
belongs to any of the flight crew. It is quite likely that some time
in the not too distant future even infants will have to be in an
approved seat restraint at take off and landing.

What documentation is a parent required to provide in order to fly a 2
year old on his lap?
No amount of documentation will change this. You can't fly with a 2
year old in your lap. Under 2 you can but 2 or older must be in a seat
with the seat belt fastened

I was under the impression it was 2 and under. The point being, what
documentation does a parent need to provide to prove the child is within the
age limit? Without documentation, how does a flight attendant who has no
first-hand experience dealing with children discern a 22 month old child from
a 28 month old child?

Presumably, the parent simply says the child is under 2, and the problem goes
away.