B737 crew was vectored off the arrival; cleared direct to an approach fix; and told to expect a visu...

Attributes
ACN	1272755
Time
Date	201506
Local Time Of Day	0001-0600
Place
Locale Reference	L30.TRACON
State Reference	NV
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Direct
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 176
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 220
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

We were taken off the tyssn arrival and told to go direct to shannd and expect the visual fairly late in the arrival. We were given a late descent clearance followed by a clearance for the visual. I selected level change 250 to expedite the descent. I thought I was on the 100 radial off of las; which would have kept me in the class B. ATC told me that I had exited the class B but would re-enter in one mile. I do not agree but that's not really the point. When working around a class B; that's set up like las vegas; it's difficult at best to maintain situational awareness on the lateral boundaries of the airspace (even in a newer model aircraft). I recommend having the class B boundaries added to the moving map in the ng aircraft. If this is not possible; we should have the aircraft position on the moving map on our efb available to us. The late clearances didn't help; but the real root of the problem is a lack of sa that we could correct with an avionics fix.recommend class B lines on the moving map in newer model aircraft. Allow us to turn on the GPS position on our efb in the air.

Original NASA ASRS Text

Title: B737 crew was vectored off the arrival; cleared direct to an approach fix; and told to expect a visual approach. Crew received a late descent followed by clearance for a visual approach. ATC then advised the crew that they had exited Class B but would re-enter in one mile.

Narrative: We were taken off the TYSSN Arrival and told to go direct to SHANND and expect the visual fairly late in the arrival. We were given a late descent clearance followed by a clearance for the visual. I selected level change 250 to expedite the descent. I thought I was on the 100 radial off of LAS; which would have kept me in the Class B. ATC told me that I had exited the Class B but would re-enter in one mile. I do not agree but that's not really the point. When working around a Class B; that's set up like Las Vegas; it's difficult at best to maintain situational awareness on the lateral boundaries of the airspace (even in a newer model aircraft). I recommend having the Class B boundaries added to the moving map in the NG aircraft. If this is not possible; we should have the aircraft position on the moving map on our EFB available to us. The late clearances didn't help; but the real root of the problem is a lack of SA that we could correct with an avionics fix.Recommend Class B lines on the moving map in newer model aircraft. Allow us to turn on the GPS position on our EFB in the air.

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.

B737 crew was vectored off the arrival; cleared direct to an approach fix; and told to expect a visual approach. Crew received a late descent followed by clearance for a visual approach. ATC then advised the crew that they had exited class B but would re-enter in one mile.