B767 captain reported confusion when ATC requested speed above 200 knots when below the class bravo ...

Attributes
ACN	1609747
Time
Date	201901
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Deviation - Speed All Types

Narrative:

Controller advised us that we would be going below class B airspace. We advised that we would need to slow below 200 knots. Controller requested we keep our speed up as it was IFR and there was no traffic below us. Confusion about controller ability to waive 200 knot limit. On arrival; we called duty officer and discussed with ATC liaison. We also followed with a call to ATC supervisor.

Original NASA ASRS Text

Title: B767 Captain reported confusion when ATC requested speed above 200 knots when below the Class Bravo airspace.

Narrative: Controller advised us that we would be going below Class B airspace. We advised that we would need to slow below 200 knots. Controller requested we keep our speed up as it was IFR and there was no traffic below us. Confusion about Controller ability to waive 200 Knot limit. On arrival; we called Duty Officer and discussed with ATC liaison. We also followed with a call to ATC Supervisor.

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.

B767 captain reported confusion when ATC requested speed above 200 knots when below the class bravo airspace.