Narrative:

Departing vgt (north las vegas) I asked ground for flight following and for a VFR bravo transition through las class B airspace. Ground told us after departure to turn right to 220 off runway 12R and to expect bravo clearance from departure control. After take-off we turned right to 220; climbing at 2;000 FPM at 180 IAS. Contacted ATC climbing through 3;300 ft and requested the bravo transition again. We were told to stand-by. At around 4;100 ft MSL we were denied bravo transition. Upon hearing this; we reacted as fast as we could to stop out climb. We leveled off at 4;700 ft MSL when the bravo airspace was at 4;500 ft MSL. ATC turned us right to 250 degrees right into the setting sun so we were blinded and were eyes inside the cockpit. ATC then advised we had boeing 737 traffic at our 9 o'clock position climbing into us in their right hand turn departing las. Then we had a GPWS (ground proximity warning system) call for terrain ahead due to the rapidly rising terrain that was 1;000 ft plus higher than where we leveled off. With safety as my utmost concern; the avoidance from terrain and another aircraft took priority over airspace. I believe ATC giving us belief of a bravo transition then canceling it at the last minute caused a task saturated cockpit environment and not enough room to keep clear of airspace. In reviewing what happened; I will never expect a bravo clearance and will depart vgt to the north on a downwind departure before climbing past 4;500 ft MSL.

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Original NASA ASRS Text

Title: A C441 pilot climbed into LAS Class B airspace to avoid traffic and terrain after being refused an expected Class B clearance.

Narrative: Departing VGT (North Las Vegas) I asked ground for flight following and for a VFR Bravo transition through LAS Class B airspace. Ground told us after departure to turn right to 220 off Runway 12R and to expect Bravo clearance from Departure Control. After take-off we turned right to 220; climbing at 2;000 FPM at 180 IAS. Contacted ATC climbing through 3;300 FT and requested the Bravo transition again. We were told to stand-by. At around 4;100 FT MSL we were denied Bravo transition. Upon hearing this; we reacted as fast as we could to stop out climb. We leveled off at 4;700 FT MSL when the Bravo airspace was at 4;500 FT MSL. ATC turned us right to 250 degrees right into the setting sun so we were blinded and were eyes inside the cockpit. ATC then advised we had Boeing 737 traffic at our 9 o'clock position climbing into us in their right hand turn departing LAS. Then we had a GPWS (Ground Proximity Warning System) call for TERRAIN ahead due to the rapidly rising terrain that was 1;000 FT plus higher than where we leveled off. With safety as my utmost concern; the avoidance from terrain and another aircraft took priority over airspace. I believe ATC giving us belief of a Bravo transition then canceling it at the last minute caused a task saturated cockpit environment and not enough room to keep clear of airspace. In reviewing what happened; I will never expect a Bravo clearance and will depart VGT to the north on a downwind departure before climbing past 4;500 FT MSL.

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.