On Wednesday, June 17, 2015 at 8:50:58 AM UTC-4, Jamie Shore wrote:
My read of the proposed rule change is as follows:
The proposed change would lift the current glider exception. The current exemption allows us to not have a transponder (or ADSB or TABS in the future) when:
1. Fly within 30 miles of the class B (mode C veil) and under the shelf.
2. Fly above 10,000 feet MSL
3. Fly in class B or C.

What else?

Your summary is correct, but it lumps together a range of possible outcomes. The FAA is not posing a YES/NO question.

A non-exhaustive enumeration of possible outcomes:

Outcome 0 - No change to current regulations

Outcome 1 - TABS required, Transponder not required, ADS B not required

Outcome 2 - TABS not required, Transponder required, ADS B not required

Outcome 3 - TABS not required, Transponder not required, ADS B in/out required

Outcome N - Some optimal combination of TABS, Xpndr, ADS-B,required.

The FAA solicits comments on the costs and benefits of any and all of the possible outcomes and then they will decide.