Mooney pilot reported being under flight following and requested descent. Pilot was granted descent ...

Narrative:

I [was] en route to rnt airport via the ortin intersection. I had requested flight following from portland approach for initially to 5500' but few moments later asked for 7500' and they grant to me. This was when I was just north of the nbg VOR where I had received my squawk code. I was about abeam or slight south of pdx and the portland departure controller I had asked me if my route route of flight to renton airport via the olympia VOR or direct. My response was negative and that I was enroute to renton via ortin waypoint. Later in the flight...I had switched seattle center frequency roughly near eatonville and asked for descent from 7500'to 5500' they granted my request. Moments later I hear you have entered the 'seattle's class bravo airspace without authorization' and moments after that transmission I hear 'radar services terminated'. I had never asked to cancel flight following. I rapidly descended to avoid the [controlled] airspace restrictions.

Original NASA ASRS Text

Title: Mooney pilot reported being under flight following and requested descent. Pilot was granted descent and then told that he was not cleared into the Class Bravo. Later pilot was told radar service was terminated.

Narrative: I [was] en route to RNT airport via the ORTIN intersection. I had requested flight following From Portland Approach for initially to 5500' but few moments later asked for 7500' and they grant to me. This was when I was just north of the NBG VOR where I had received my squawk code. I was about abeam or slight south of PDX and the Portland Departure Controller I had asked me if my route route of flight to Renton airport via the Olympia VOR or direct. My response was negative and that I was enroute to Renton via ORTIN waypoint. Later in the flight...I had switched Seattle Center Frequency roughly near Eatonville and asked for descent from 7500'to 5500' they granted my request. Moments later I hear you have entered the 'Seattle's Class Bravo Airspace without authorization' and moments after that transmission I hear 'RADAR Services terminated'. I had never asked to cancel flight following. I rapidly descended to avoid the [controlled] Airspace restrictions.

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	1381837
Time
Date	201608
Local Time Of Day	1801-2400
Place
Locale Reference	S46.TRACON
State Reference	WA
Aircraft 1
Make Model Name	M-20 B/C Ranger
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Direct
Flight Plan	None
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 798 Flight Crew Type 444
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Procedural Clearance

Mooney pilot reported being under flight following and requested descent. Pilot was granted descent and then told that he was not cleared into the class bravo. Later pilot was told radar service was terminated.