Narrative:

I landed at XX30 at pao in a gusting crosswind of 10-15 KTS at a 40-50 degree angle to the runway. Interesting, but not particularly challenging. After the passenger arrived, we loaded and departed with a crosswind of 15-22 KTS from 45 degrees. The takeoff was very difficult with an ability to maintain runway centerline. I had intended to make a right 270 degree departure and had looked at the maps for the class B, C, and D airspace restrs along the planned departure route of 120 degrees. As I topped out, I observed that there were a number of other aircraft in the pattern and the high lenticular clouds paralleling the planned route indicated I would possibly be in the sink side of the wave if I kept to the original 120 degree departure route. I therefore departed at 300 degrees for 4 mi, then turned to 250 degrees for 5-10 mi, climbing as I went to get to the lift side of the wave. The original route had a class B floor of 6000 ft and a class C top of 4000 ft. The new route had a 4000 ft class B floor. I was distraction thinking about the difficult takeoff, and by listening to the tower and other pilots trying to land in the gusting crosswind and shear conditions, and by tracking the lenticular to get into the lift. On passing through 5000 ft (1000 ft into class B) I checked the map and found myself in the class B. I descended to 3900 ft as soon as possible. I should have checked the new route prior to takeoff. I should have called bay instead of listening ot the other pilots' difficulties.

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Original NASA ASRS Text

Title: PLT OF A C180 INADVERTENTLY CLBED INTO CLASS B AIRSPACE DUE TO A CHANGE OF VFR DEP ROUTING FROM AN UNDERLYING ARPT. HE EXITED THE AIRSPACE AFTER NOTING IT HIS ERROR.

Narrative: I LANDED AT XX30 AT PAO IN A GUSTING XWIND OF 10-15 KTS AT A 40-50 DEG ANGLE TO THE RWY. INTERESTING, BUT NOT PARTICULARLY CHALLENGING. AFTER THE PAX ARRIVED, WE LOADED AND DEPARTED WITH A XWIND OF 15-22 KTS FROM 45 DEGS. THE TKOF WAS VERY DIFFICULT WITH AN ABILITY TO MAINTAIN RWY CTRLINE. I HAD INTENDED TO MAKE A R 270 DEG DEP AND HAD LOOKED AT THE MAPS FOR THE CLASS B, C, AND D AIRSPACE RESTRS ALONG THE PLANNED DEP RTE OF 120 DEGS. AS I TOPPED OUT, I OBSERVED THAT THERE WERE A NUMBER OF OTHER ACFT IN THE PATTERN AND THE HIGH LENTICULAR CLOUDS PARALLELING THE PLANNED RTE INDICATED I WOULD POSSIBLY BE IN THE SINK SIDE OF THE WAVE IF I KEPT TO THE ORIGINAL 120 DEG DEP RTE. I THEREFORE DEPARTED AT 300 DEGS FOR 4 MI, THEN TURNED TO 250 DEGS FOR 5-10 MI, CLBING AS I WENT TO GET TO THE LIFT SIDE OF THE WAVE. THE ORIGINAL RTE HAD A CLASS B FLOOR OF 6000 FT AND A CLASS C TOP OF 4000 FT. THE NEW RTE HAD A 4000 FT CLASS B FLOOR. I WAS DISTR THINKING ABOUT THE DIFFICULT TKOF, AND BY LISTENING TO THE TWR AND OTHER PLTS TRYING TO LAND IN THE GUSTING XWIND AND SHEAR CONDITIONS, AND BY TRACKING THE LENTICULAR TO GET INTO THE LIFT. ON PASSING THROUGH 5000 FT (1000 FT INTO CLASS B) I CHKED THE MAP AND FOUND MYSELF IN THE CLASS B. I DSNDED TO 3900 FT ASAP. I SHOULD HAVE CHKED THE NEW RTE PRIOR TO TKOF. I SHOULD HAVE CALLED BAY INSTEAD OF LISTENING OT THE OTHER PLTS' DIFFICULTIES.

Data retrieved from NASA's ASRS site as of July 2007 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.