B737-700 captain reported exceeding 200 kts below class B airspace during arrival into the dal area.

Attributes
ACN	1635521
Time
Date	201904
Local Time Of Day	1801-2400
Place
Locale Reference	DAL.Airport
State Reference	TX
Environment
Light	Dawn
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Final Approach Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 262
Events
Anomaly	Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Deviation - Speed All Types

Narrative:

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.

Original NASA ASRS Text

Title: B737-700 Captain reported exceeding 200 kts below Class B airspace during arrival into the DAL area.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.