B737-700
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 262
Situational Awareness
Deviation - Speed All Types; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert
Human Factors; Airspace Structure; Procedure
Cleared for visual 13L descend to 2;000 feet was the clearance from ATC. Left 3;000 feet for 2;000 feet only aircraft on approach so there was no relevant traffic. We kept our speed up and ATC asked our speed after we leveled at 2;000 feet and I immediately thought we might be under the Class B Airspace. I saw ADS airport out the window and thought this was surely too fast. After landing I pulled the terminal chart out and saw that indeed there is a carve out for ADS at 2;000 feet North of DAL.It might be helpful to add a note on the airport page to use caution for being below Class B in this area. Not making excuses.
B737-700 Captain reported exceeding 200 kts below Class B airspace during arrival into the DAL area.