An air carrier captain reported exceeding far speed limit below class B on the sjc loupe 1 SID.

Attributes
ACN	900431
Time
Date	201007
Local Time Of Day	0001-0600
Place
Locale Reference	SJC.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Route In Use	SID LOUPE 1
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 101 Flight Crew Total 8500 Flight Crew Type 3425
Events
Anomaly	Deviation - Procedural FAR Deviation - Speed All Types

Narrative:

[We were] departing sjc airport via loupe 1 departure. Flying the departure in navigation mode; leaving approx 2;200 ft MSL; and aircraft accelerated to program 250 KTS in accordance with the nadp 2 departure profile. ATC controller requested that we tighten turn; and then reminded us of the 200 KT limit below class B (sfo) airspace. I had apparently confused the airspace diagram for sjc class C airspace with the class B airspace lying above sjc. I slowed aircraft as much as possible in the next few moments; and we leveled at 5;000 ft per the departure. ATC did not advise of any traffic conflict or problems. Further review of the departure charts revealed the possible confusion. I have reviewed the info and annotated charts to clearly show the limits of the class B airspace and airspeed limits associated to prevent further confusion.

Original NASA ASRS Text

Title: An air carrier Captain reported exceeding FAR speed limit below Class B on the SJC Loupe 1 SID.

Narrative: [We were] departing SJC airport via Loupe 1 departure. Flying the departure in navigation mode; leaving approx 2;200 FT MSL; and aircraft accelerated to program 250 KTS in accordance with the NADP 2 Departure profile. ATC Controller requested that we tighten turn; and then reminded us of the 200 KT limit below Class B (SFO) airspace. I had apparently confused the airspace diagram for SJC Class C airspace with the Class B airspace lying above SJC. I slowed aircraft as much as possible in the next few moments; and we leveled at 5;000 FT per the departure. ATC did not advise of any traffic conflict or problems. Further review of the departure charts revealed the possible confusion. I have reviewed the info and annotated charts to clearly show the limits of the Class B airspace and airspeed limits associated to prevent further confusion.

Data retrieved from NASA's ASRS site as of April 2012 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.