A little more specifically: Because of the lack of a transponder, you will
not be able to fly in class A, B or C airspace or within the lateral
dimsensions of B&C airspace, Unable to fly over 10,000 feet MSL unless you
are less than 2500 ft agl, not able to cross the ADIZ. In spite of all this
if you make prior arrangements with the controllers in the B or C airspace,
you can arrange to enter that space.

(a) All airspace: U.S.-registered civil aircraft. For operations not
conducted under part 121 or 135 of this chapter, ATC transponder equipment
installed must meet the performance and environmental requirements of any
class of TSO-C74b (Mode A) or any class of TSO-C74c (Mode A with altitude
reporting capability) as appropriate, or the appropriate class of TSO-C112
(Mode S).

(b) All airspace. Unless otherwise authorized or directed by ATC, no
person may operate an aircraft in the airspace described in paragraphs
(b)(1) through (b)(5) of this section, unless that aircraft is equipped with
an operable coded radar beacon transponder having either Mode 3/A 4096 code
capability, replying to Mode 3/A interrogations with the code specified by
ATC, or a Mode S capability, replying to Mode 3/A interrogations with the
code specified by ATC and intermode and Mode S interrogations in accordance
with the applicable provisions specified in TSO C-112, and that aircraft is
equipped with automatic pressure altitude reporting equipment having a Mode
C capability that automatically replies to Mode C interrogations by
transmitting pressure altitude information in 100-foot increments. This
requirement applies--


(1) All aircraft. In Class A, Class B, and Class C airspace areas;

(2) All aircraft. In all airspace within 30 nautical miles of an
airport listed in appendix D, section 1 of this part from the surface upward
to 10,000 feet MSL;

(3) Notwithstanding paragraph (b)(2) of this section, any aircraft
which was not originally certificated with an engine-driven electrical
system or which has not subsequently been certified with such a system
installed, balloon or glider may conduct operations in the airspace within
30 nautical miles of an airport listed in appendix D, section 1 of this part
provided such operations are conducted--
(i) Outside any Class A, Class B, or Class C airspace area; and
(ii) Below the altitude of the ceiling of a Class B or Class C
airspace area designated for an airport or 10,000 feet MSL, whichever is
lower; and

(4) All aircraft in all airspace above the ceiling and within the
lateral boundaries of a Class B or Class C airspace area designated for an
airport upward to 10,000 feet MSL; and

(5) All aircraft except any aircraft which was not originally
certificated with an engine-driven electrical system or which has not
subsequently been certified with such a system installed, balloon, or
glider----

(i) In all airspace of the 48 contiguous states and the District of
Columbia at and above 10,000 feet MSL, excluding the airspace at and below
2,500 feet above the surface; and

(ii) In the airspace from the surface to 10,000 feet MSL within a
10-nautical-mile radius of any airport listed in appendix D, section 2 of
this part, excluding the airspace below 1,200 feet outside of the lateral
boundaries of the surface area of the airspace designated for that airport.
(c) Transponder-on operation. While in the airspace as specified in
paragraph (b) of this section or in all controlled airspace, each person
operating an aircraft equipped with an operable ATC transponder maintained
in accordance with Sec. 91.413 of this part shall operate the transponder,
including Mode C equipment if installed, and shall reply on the appropriate
code or as assigned by ATC.


(d) ATC authorized deviations. Requests for ATC authorized deviations
must be made to the ATC facility having jurisdiction over the concerned
airspace within the time periods specified as follows:


(1) For operation of an aircraft with an operating transponder but
without operating automatic pressure altitude reporting equipment having a
Mode C capability, the request may be made at any time.

(2) For operation of an aircraft with an inoperative transponder to
the airport of ultimate destination, including any intermediate stops, or to
proceed to a place where suitable repairs can be made or both, the request
may be made at any time.

(3) For operation of an aircraft that is not equipped with a
transponder, the request must be made at least one hour before the proposed
operation.




"Ron Wanttaja" wrote in message
...
On Sun, 11 Mar 2007 23:14:48 -0800, "Robert Loer"
wrote:

Can someone simplify this answer for me me, please as it is nearing
decision
time on my project?

With no lights and or transponder, where will I not be able to fly?

In Class B or C airspace, or at night. If your plane has an engine-driven
electrical system, you also will not be able to fly within the 30 nm Class
B
"Veil."

Ron Wanttaja