PA28 pilot entered bos class B.

Attributes
ACN	463980
Time
Date	200002
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos.airport
State Reference	MA
Altitude	msl single value : 1300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : a90.tracon
Operator	Other
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Navigation In Use	other other
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	company other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : cfi pilot : commercial
Experience	flight time last 90 days : 80 flight time total : 3000 flight time type : 2200
ASRS Report	463980
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	airspace violation : entry non adherence : far non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued advisory none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During a transition from 1b9 to a point 5.5 mi east of bedford, ma,. The route I fly is a 8.5 - 9 mi arc around the TCA. I have used this route to transition for a few years. There are good visual chkpoints and I was using a GPS. I believe either my encoder gave false signals or boston was just plain wrong.

Original NASA ASRS Text

Title: PA28 PLT ENTERED BOS CLASS B.

Narrative: DURING A TRANSITION FROM 1B9 TO A POINT 5.5 MI E OF BEDFORD, MA,. THE RTE I FLY IS A 8.5 - 9 MI ARC AROUND THE TCA. I HAVE USED THIS RTE TO TRANSITION FOR A FEW YEARS. THERE ARE GOOD VISUAL CHKPOINTS AND I WAS USING A GPS. I BELIEVE EITHER MY ENCODER GAVE FALSE SIGNALS OR BOSTON WAS JUST PLAIN WRONG.

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.