GA small aircraft unauthorized penetration of airspace.

Attributes
ACN	125075
Time
Date	198910
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : msn airport : c29
State Reference	WI
Altitude	msl bound lower : 2300 msl bound upper : 2800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : msn
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 85 flight time total : 500
ASRS Report	125075
Events
Anomaly	other anomaly other
Independent Detector	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 at 2500'. On a clear sunny day. I was allowing the plane to ride up and down a few hundred feet in the fairly strong thermals to keep my children as comfortable as possible. I listened to madison's ATIS and monitored the tower until I tuned in the unicom frequency for morey field. I did not contact madison because I had no intentions of entering their airspace. I tried to identify my location among the thirteen towers and obstructions near the southwest fringe of the outer layer of the arsa. As I determined that I was on the verge of entering the arsa at that altitude, I looked at my altimeter to find that I was on my way up in another thermal. I do not know for sure if I entered the arsa, but I was a lot closer to this airspace than I like to come without proper clearance. I feel that the large number of towers in this area tend to preoccupy a pilot with trying to avoid towers first and airspace second. The tops of 4 of these towers are within 125' of the bottom of the outer layer (2 are within 51') making it impossible to fly over them and under the arsa and difficult to fly around them. The tower with the strobe beacons is not painted red and white and was much harder to southeast in bright sunlight than the others. The next time that I fly to morey field I will stay well to the west of this mess until ready to enter the pattern at morey.

Original NASA ASRS Text

Title: GA SMA UNAUTH PENETRATION OF AIRSPACE.

Narrative: I WAS FLYING AT 2500'. ON A CLEAR SUNNY DAY. I WAS ALLOWING THE PLANE TO RIDE UP AND DOWN A FEW HUNDRED FEET IN THE FAIRLY STRONG THERMALS TO KEEP MY CHILDREN AS COMFORTABLE AS POSSIBLE. I LISTENED TO MADISON'S ATIS AND MONITORED THE TWR UNTIL I TUNED IN THE UNICOM FREQ FOR MOREY FIELD. I DID NOT CONTACT MADISON BECAUSE I HAD NO INTENTIONS OF ENTERING THEIR AIRSPACE. I TRIED TO IDENTIFY MY LOCATION AMONG THE THIRTEEN TWRS AND OBSTRUCTIONS NEAR THE SW FRINGE OF THE OUTER LAYER OF THE ARSA. AS I DETERMINED THAT I WAS ON THE VERGE OF ENTERING THE ARSA AT THAT ALT, I LOOKED AT MY ALTIMETER TO FIND THAT I WAS ON MY WAY UP IN ANOTHER THERMAL. I DO NOT KNOW FOR SURE IF I ENTERED THE ARSA, BUT I WAS A LOT CLOSER TO THIS AIRSPACE THAN I LIKE TO COME WITHOUT PROPER CLRNC. I FEEL THAT THE LARGE NUMBER OF TWRS IN THIS AREA TEND TO PREOCCUPY A PLT WITH TRYING TO AVOID TWRS FIRST AND AIRSPACE SECOND. THE TOPS OF 4 OF THESE TWRS ARE WITHIN 125' OF THE BOTTOM OF THE OUTER LAYER (2 ARE WITHIN 51') MAKING IT IMPOSSIBLE TO FLY OVER THEM AND UNDER THE ARSA AND DIFFICULT TO FLY AROUND THEM. THE TWR WITH THE STROBE BEACONS IS NOT PAINTED RED AND WHITE AND WAS MUCH HARDER TO SE IN BRIGHT SUNLIGHT THAN THE OTHERS. THE NEXT TIME THAT I FLY TO MOREY FIELD I WILL STAY WELL TO THE WEST OF THIS MESS UNTIL READY TO ENTER THE PATTERN AT MOREY.

Data retrieved from NASA's ASRS site as of August 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.