Pilot of small aircraft misnavigated north of radial he was being vectored to.

Attributes
ACN	135572
Time
Date	199001
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : slm airport : yip
State Reference	WI
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 67 flight time total : 715
ASRS Report	135572
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Publication	Unspecified

Narrative:

My clearance was willow run 8 departure, vectors to boshm intersection, jxn, lfd, direct ggp. Upon departure I was given 'fly runway heading.' after contacting departure on 118.95, I was told to maintain 5000' and to intercept the 280 1 degree det radial on 300 degree heading. I climbed to 5000' and turned northwest to 300 degrees. I then inadvertently flew through the radial, and a few mi to the north of it. Just as I had detected the error and cause, ATC called and said I was well north of the radial and to turn to 240 degree heading to reintercept. I did this and the flight was uneventful from that point on.

Original NASA ASRS Text

Title: PLT OF SMA MISNAVIGATED NORTH OF RADIAL HE WAS BEING VECTORED TO.

Narrative: MY CLRNC WAS WILLOW RUN 8 DEP, VECTORS TO BOSHM INTXN, JXN, LFD, DIRECT GGP. UPON DEP I WAS GIVEN 'FLY RWY HDG.' AFTER CONTACTING DEP ON 118.95, I WAS TOLD TO MAINTAIN 5000' AND TO INTERCEPT THE 280 1 DEG DET RADIAL ON 300 DEG HDG. I CLBED TO 5000' AND TURNED NW TO 300 DEGS. I THEN INADVERTENTLY FLEW THROUGH THE RADIAL, AND A FEW MI TO THE N OF IT. JUST AS I HAD DETECTED THE ERROR AND CAUSE, ATC CALLED AND SAID I WAS WELL N OF THE RADIAL AND TO TURN TO 240 DEG HDG TO REINTERCEPT. I DID THIS AND THE FLT WAS UNEVENTFUL FROM THAT POINT ON.

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.