Q: Flying BENEATH Class B/C/D Airspace

"Ben Hallert" wrote in message
oups.com...
Assuming you mean 'below the airspace'

Well, for one... there's the mode C veil. 30 miles from the primary
airport located in class bravo, mode C transponders are required and
must be transmitting altitude data.


Kinda true but aircraft not originally built with an electrical system are
exempt.

On 27 Jun 2005 16:52:23 -0700, "Ben Hallert"
wrote:

Well, for one... there's the mode C veil. 30 miles from the primary
airport located in class bravo, mode C transponders are required and
must be transmitting altitude data.

Again, not always the case. I have often through the Mode C Veil
around Boston's Logan airport without a transponder. It is legal with
an airpcraft that was built without and has never been equipped with
an electrical system, like the Cub.


-- all the best, Dan Ford

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On Mon, 27 Jun 2005 23:15:06 GMT, john smith wrote in
::

What requirements are there for flying BELOW the airport surface?

I would think you'd need some digging equipment. :-)

There is also a speed issue when inside the 30 mile radius of the Class
Bravo primary. FAR 91.117 covers that..."No person may operate an aircraft
in the air space underlying a Class B airspace area designated for an
airport or in a VFR corridor designated through such a Class B airspace
area, at an indicated airspeed of more than 200 knots.

Fred


"john smith" wrote in message
...
The regs say you must communicate, have permission, a clearance, have a
transponder, etc to fly in any Class B/C/D Airspace.
The airspace is generally defined by the airport reference point altitude
and location on the field. For example the definitions state "from the
surface to..."
What requirements are there for flying BELOW the airport surface?
I know several airports with the requisite airspace that are located above
surrounding terrain where it would be possible to fly below the airport
surface.
What say the group?

My Cherokee 140 won't even do 140 kts (unless I'm out back pushing it
while in a tailwind and descending g)



Fred Choate wrote:
There is also a speed issue when inside the 30 mile radius of the Class
Bravo primary. FAR 91.117 covers that..."No person may operate an aircraft
in the air space underlying a Class B airspace area designated for an
airport or in a VFR corridor designated through such a Class B airspace
area, at an indicated airspeed of more than 200 knots.

Fred

"john smith" wrote

What requirements are there for flying BELOW the airport surface?
I know several airports with the requisite airspace that are located
above surrounding terrain where it would be possible to fly below the
airport surface.
What say the group?

I would say that if you chose to go down that path of picking at cracks in
the definitions, don't be surprised when the crack opens up and sh*ts all
over you. g
--
Jim in NC

"john smith" wrote in message
...
The regs say you must communicate, have permission, a clearance, have a
transponder, etc to fly in any Class B/C/D Airspace.
The airspace is generally defined by the airport reference point altitude
and location on the field. For example the definitions state "from the
surface to..."

The airspace isn't defined by reference to the airport altitude. An airspace
that goes down to the surface goes down to the surface at each point in that
airspace; otherwise, it would say e.g. "airport elevation to 2600" rather
than "surface to 2600".

--Gary

"john smith" wrote in message
...

The regs say you must communicate, have permission, a clearance, have a
transponder, etc to fly in any Class B/C/D Airspace.
The airspace is generally defined by the airport reference point altitude
and location on the field. For example the definitions state "from the
surface to..."
What requirements are there for flying BELOW the airport surface?
I know several airports with the requisite airspace that are located above
surrounding terrain where it would be possible to fly below the airport
surface.
What say the group?


The boundary of the airspace is generally defined by the airport reference
point but the altitude at that has nothing to do with the airspace. The
lower limit of a surface area is the surface of the Earth, you'll find it
quite difficult fly below the surface.

On Mon, 27 Jun 2005 23:15:06 GMT, john smith wrote:

The regs say you must communicate, have permission, a clearance, have a
transponder, etc to fly in any Class B/C/D Airspace.

No, you don't need a transponder to fly in D airspace. I do it all the
time.



-- all the best, Dan Ford

email (put Cubdriver in subject line)

Warbird's Forum: www.warbirdforum.com
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