Class B bust my fault or the controllers ?

According to my SEA Class B chart, if you are at 800 feet and turn before
you get to I-405, you will not enter Class B. Something to check before
takeoff. The Boeing controller has no authority in the SEA Class B. You
should have spoken up before reaching 405.

Bob Gardner

"Antoñio" wrote in message
oups.com...
Today I flew into KBFI (Boeing field) which is class D and has
extentions that underlie the Class B that require close attention to
altitudes and headings so as to stay clear. Today the winds were
favoring 31L (and 31R) and I came in from the west on the Vashon
approach--the most common approach from the west.

I was on a left downwind for 31L and the tower told me I was number
three following an Arrow on about a 2 mile straight in final (Valley
approach?). I acknowledged the traffic, and was waiting for it to come
up on my 9 o'clock before turning base so as to allow enough spacing.

The controller suddenly told me that I was too far south and said
either that I had busted into surface B or was about to. (I never did
clearly hear which).
Unless one turns a fairly close in base here--within about a half mile
or less--you end up in class B surface.

My questions:

1.Assuming I busted B; who is reponsible if the controller asks me to
follow an aircraft that is too far out on a straight in? I mean, I can
reduce speed, s-turn, and the like but I can't turn base until the
aircraft on final is a safe distance away, right?

2.Is the controller supposed to arrange things so that I *can* turn
base and not be in conflict with other aircraft?

3.How would you resolve the problem if it were happening to you ?

Any thoughts would be appreciated...

Antonio

Bob Gardner wrote:

According to my SEA Class B chart, if you are at 800 feet and turn before
you get to I-405, you will not enter Class B. Something to check before
takeoff. The Boeing controller has no authority in the SEA Class B. You
should have spoken up before reaching 405.

The airspace there is so complex with not only the Class B but the Renton
Class D. If I were going to land at BFI as an out-of-towner, it would be IFR
or I wouldn't get near any of it. I don't think I would even accept a visual
approach to BFI.