A B737-700 flight crew on arrival to sna exceeded the 200 KT speed limit below the class B floor.

Attributes
ACN	705616
Time
Date	200608
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sna.airport
State Reference	CA
Altitude	msl single value : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : tandy
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 159 flight time type : 2000
ASRS Report	705616
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly
Supplementary
Problem Areas	Airspace Structure Chart Or Publication Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was the PF when we got turned in early off the tandy arrival. I leveled at 6000 ft and maintained 250 KTS because there was a 20 mi final and we were still 20 or so mi from the IAF. Socal came on and asked our airspeed and we responded 250 KTS. Socal then called another aircraft on frequency ahead of us and started explaining to him that he; the other aircraft; was below class B airspace below 7000 ft MSL. We immediately realized we were also and slowed to 200 KTS without comment from the controller or further incidence. We should have briefed the early turn as mentioned off of the tandy arrival. However; it is a busy time in the approach into sna with high density traffic and it would help if socal could give a heads up instead of sharp shooting. I know this has been a systemic problem in this area with all airlines. It is hard to fix the class B and deal with high density traffic. It would help if ATC could help out.

Original NASA ASRS Text

Title: A B737-700 FLT CREW ON ARR TO SNA EXCEEDED THE 200 KT SPD LIMIT BELOW THE CLASS B FLOOR.

Narrative: I WAS THE PF WHEN WE GOT TURNED IN EARLY OFF THE TANDY ARR. I LEVELED AT 6000 FT AND MAINTAINED 250 KTS BECAUSE THERE WAS A 20 MI FINAL AND WE WERE STILL 20 OR SO MI FROM THE IAF. SOCAL CAME ON AND ASKED OUR AIRSPD AND WE RESPONDED 250 KTS. SOCAL THEN CALLED ANOTHER ACFT ON FREQ AHEAD OF US AND STARTED EXPLAINING TO HIM THAT HE; THE OTHER ACFT; WAS BELOW CLASS B AIRSPACE BELOW 7000 FT MSL. WE IMMEDIATELY REALIZED WE WERE ALSO AND SLOWED TO 200 KTS WITHOUT COMMENT FROM THE CTLR OR FURTHER INCIDENCE. WE SHOULD HAVE BRIEFED THE EARLY TURN AS MENTIONED OFF OF THE TANDY ARR. HOWEVER; IT IS A BUSY TIME IN THE APCH INTO SNA WITH HIGH DENSITY TFC AND IT WOULD HELP IF SOCAL COULD GIVE A HEADS UP INSTEAD OF SHARP SHOOTING. I KNOW THIS HAS BEEN A SYSTEMIC PROB IN THIS AREA WITH ALL AIRLINES. IT IS HARD TO FIX THE CLASS B AND DEAL WITH HIGH DENSITY TFC. IT WOULD HELP IF ATC COULD HELP OUT.

Data retrieved from NASA's ASRS site as of January 2009 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.