FWIW, from "AOPA Pilot" (January 2008):

quote
FAA grants industry more time to study ADS-B

Heeding the industry's call, the FAA is allowing more time to weigh in on
its ADS-B (automatic dependent surveillance-broadcast) proposal.

In its petition for a 60-day extension, AOPA said that there were questions
regarding the financial feasibility for general aviation as the FAA shifts
to a satellite-based navigation and air traffic control system. Also, AOPA
wanted to make sure that the proposal would improve ATC services at GA
airports while enhancing safety.

In addition to AOPA, several other industry groups weighed in and the FAA
moved the comment deadline to March 3. AOPA will use the extra time to
formulate and disseminate information to members.

The FAA estimates that aircraft owners will invest between $1.21 billion and
$7.46 billion in avionics equipment. ADS-B offers a lot of potential
benefits; however, Congress is already skeptical about the FAA's ability to
keep tabs on the new ADS-B contractor.

On August 30, the FAA awarded a contract to ITT Corp. to build and operate
the ADS-B ground infrastructure and supply aircraft position data to the
FAA. One month later, the FAA issued the proposed rules that would require
all aircraft to add ADS-B equipment by 2020 to be able to fly within Class B
and C airspace and above 10,000 feet.
/quote

--
John T
http://sage1solutions.com/blogs/TknoFlyer
http://sage1solutions.com/products
NEW! FlyteBalance v2.0 (W&B); FlyteLog v2.0 (Logbook)
____________________