Reporter says he was pushed into the positive control area by updrafts and clouds.

Attributes
ACN	236870
Time
Date	199303
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : rdm
State Reference	OR
Altitude	msl bound lower : 18000 msl bound upper : 19500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time total : 2200 flight time type : 900
ASRS Report	236870
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was flying VFR on top of the overcast (on course) north to seattle, wa, when I entered continental airspace. The clouds (tops) were at 12000-14000 ft and at the time of the incident updrafts and clouds pushed me up into the controled airspace. I was on radar following to seattle ATC controller. The controller advised me I had entered restr airspace in which I requested a turn to the west to see if I could descend without entering the clouds. This was not possible. I then requested a turn to the east and found the tops of clouds building even higher. Several times ATC requested I descend and I stated I did not want to enter the clouds. Another aircraft had declared an emergency and was in the clouds icing up and wished vectoring to the nearest airport. At that time, I informed ATC I was turning back and requested an airport (redmond, or) where the overcast was broken. I descended without incident. Factors that were critical in my decisions were: not to enter the clouds IFR in known icing. Not to enter the clouds IFR in known snow. Not to enter the clouds IFR in known turbulence. Above the clouds I had visual reference and control. One aircraft in the clouds declared an emergency. Not IFR rated pilot to fly in IFR conditions. The safe thing for me to do was to remain on top and return to a clear airport with radar following and vectors. Future prevention would be not to fly into building cloud formations, and to allow adequate space between aircraft and tops and carry additional oxygen since I was low but had enough for the trip.

Original NASA ASRS Text

Title: RPTR SAYS HE WAS PUSHED INTO THE PCA BY UPDRAFTS AND CLOUDS.

Narrative: I WAS FLYING VFR ON TOP OF THE OVCST (ON COURSE) N TO SEATTLE, WA, WHEN I ENTERED CONTINENTAL AIRSPACE. THE CLOUDS (TOPS) WERE AT 12000-14000 FT AND AT THE TIME OF THE INCIDENT UPDRAFTS AND CLOUDS PUSHED ME UP INTO THE CTLED AIRSPACE. I WAS ON RADAR FOLLOWING TO SEATTLE ATC CTLR. THE CTLR ADVISED ME I HAD ENTERED RESTR AIRSPACE IN WHICH I REQUESTED A TURN TO THE W TO SEE IF I COULD DSND WITHOUT ENTERING THE CLOUDS. THIS WAS NOT POSSIBLE. I THEN REQUESTED A TURN TO THE E AND FOUND THE TOPS OF CLOUDS BUILDING EVEN HIGHER. SEVERAL TIMES ATC REQUESTED I DSND AND I STATED I DID NOT WANT TO ENTER THE CLOUDS. ANOTHER ACFT HAD DECLARED AN EMER AND WAS IN THE CLOUDS ICING UP AND WISHED VECTORING TO THE NEAREST ARPT. AT THAT TIME, I INFORMED ATC I WAS TURNING BACK AND REQUESTED AN ARPT (REDMOND, OR) WHERE THE OVCST WAS BROKEN. I DSNDED WITHOUT INCIDENT. FACTORS THAT WERE CRITICAL IN MY DECISIONS WERE: NOT TO ENTER THE CLOUDS IFR IN KNOWN ICING. NOT TO ENTER THE CLOUDS IFR IN KNOWN SNOW. NOT TO ENTER THE CLOUDS IFR IN KNOWN TURB. ABOVE THE CLOUDS I HAD VISUAL REF AND CTL. ONE ACFT IN THE CLOUDS DECLARED AN EMER. NOT IFR RATED PLT TO FLY IN IFR CONDITIONS. THE SAFE THING FOR ME TO DO WAS TO REMAIN ON TOP AND RETURN TO A CLR ARPT WITH RADAR FOLLOWING AND VECTORS. FUTURE PREVENTION WOULD BE NOT TO FLY INTO BUILDING CLOUD FORMATIONS, AND TO ALLOW ADEQUATE SPACE BTWN ACFT AND TOPS AND CARRY ADDITIONAL OXYGEN SINCE I WAS LOW BUT HAD ENOUGH FOR THE TRIP.

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.