B737 captain reported the TILLT2 RNAV arrival into sna has a segment operating below the lax class B...

Narrative:

Pilot has been based in lax for many years; and is familiar with arrivals from the north into sna. In the past there were no RNAV arrivals; which drove the requirement for vectors from ATC after benet at 11000 for arrivals to runway 20R. Many pilots are not familiar with the lax class B airspace layout; and that it impacts arrivals along this course. Flying below the class B requires the speed reduction to 200 kts. We used to do this once we broke the 7000 foot floor enroute to sna class C airspace. Now there is an RNAV arrival; we were on the TILLT2. The fix laxbb is clearly under the lax class B and the requirement is to arrive at 5000 feet. We planned and executed a speed reduction to 200 knots. We also queried socal TRACON as to the restriction. Controller told us she did not care. We still flew the 200 knots as we did not believe she could waive the far requirement. Pilots are getting led down the path of violations because they are not familiar.

Original NASA ASRS Text

Title: B737 Captain reported the TILLT2 RNAV arrival into SNA has a segment operating below the LAX Class B that requires a speed reduction to 200 kts and controllers seem unaware and unconcerned.

Narrative: Pilot has been based in LAX for many years; and is familiar with arrivals from the north into SNA. In the past there were no RNAV arrivals; which drove the requirement for vectors from ATC after BENET at 11000 for arrivals to Runway 20R. Many pilots are not familiar with the LAX Class B airspace layout; and that it impacts arrivals along this course. Flying below the Class B requires the speed reduction to 200 kts. We used to do this once we broke the 7000 foot floor enroute to SNA Class C airspace. Now there is an RNAV arrival; we were on the TILLT2. The fix LAXBB is clearly under the LAX Class B and the requirement is to arrive at 5000 feet. We planned and executed a speed reduction to 200 knots. We also queried SOCAL TRACON as to the restriction. Controller told us she did not care. We still flew the 200 knots as we did not believe she could waive the FAR requirement. Pilots are getting led down the path of violations because they are not familiar.

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.

Attributes
ACN	1515251
Time
Date	201801
Place
Locale Reference	SNA.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Type 3728
Events
Anomaly	ATC Issue All Types Deviation - Procedural FAR Deviation - Procedural Published Material / Policy

B737 captain reported the TILLT2 RNAV arrival into sna has a segment operating below the lax class B that requires a speed reduction to 200 kts and controllers seem unaware and unconcerned.