The typical newer operating limitations have two parts relating to
that.
(5) Except for takeoffs and landings, this aircraft may not be operated
over densely populated areas or in congested airways.
(6) This aircraft is prohibited from operating in congested airways or
over densely populated aras unless directed by Air Traffic Control, or
unless sufficient altitude is maintained to effect a safe emergency
landing in the event of a power unit failure, without hazard to persons
or property on the surface.

It still has a statement relating to such flights but it really affords
a way out. (5) allows you to go into/outoff airports. (6) allows you to
go over any densely populated area if directed by ATC (all you need is
flight following, or permit to transgress the airspace (normal for any
GA)) and it allows you to go over the area if you are high enough with
gliding distance to a "safe landing". With a gliding ratio of 10 you
should be able to glide to a non populated area if you are at 10K feet
easily in most cases.

Some limitations place (5) into phase one only. But think about it: (5)
allows to fly without ATC guidance into/outoff populated area airports.

Does anybody have operating limitations without either (5) or (6)?

JK wrote:
I have been planning to build my own airplane for quite a while, but
I have
a nagging question that I never see addressed. FAR Part 91.319 (c)
appears
to prohibit flight of experimental aircraft over "densely populated
areas"
(whatever that means).

The entire text is: "Unless otherwise authorized by the Administrator
in
special operating limitations, no person may operate an aircraft that
has an
experimental certificate over a densely populated area or in a
congested
airway. The Administrator may issue special operating limitations for
particular aircraft to permit takeoffs and landings to be conducted
over a
densely populated area or in a congested airway, in accordance with
terms
and conditions specified in the authorization in the interest of
safety in
air commerce."

How do the rest of you deal with this? Does the "Unless otherwise
authorized ..." part help somehow? Do you avoid densely populated
areas?

Thanks
John