Narrative:

Flying dxr to mmu VFR in VMC conditions. Maintaining 1700 ft MSL. Tracking a VOR radial that would keep me clear of new york class B airspace. While checking ground reference points, I discover that I'm east of my intended course. VOR still indicates aircraft on the proper radial. I take corrective action and fly west. I was very close to the border, maybe on the border to the class B sector extending from 500 ft to 7000 ft. Did not come close to other aircraft, as far as I could see. Suspect possible VOR receiver fault. I relied too much on VOR bearing for navigation. In the future, while flying VFR, I will not use radios for primary means of navigation, instead xchk with ground reference points frequently to ensure staying on intended course.

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Original NASA ASRS Text

Title: AN SMA FLYING CLOSE BY N90, NY, AIRSPACE IS CONCERNED THAT AN INTRUSION WITHOUT CLRNC MIGHT HAVE TAKEN PLACE. PLT REALIGNS ACFT WITH SOME GOOD VISUAL CHKPOINTS AND BELIEVES HE DID NOT INTRUDE INTO THE CLASS B AIRSPACE.

Narrative: FLYING DXR TO MMU VFR IN VMC CONDITIONS. MAINTAINING 1700 FT MSL. TRACKING A VOR RADIAL THAT WOULD KEEP ME CLR OF NEW YORK CLASS B AIRSPACE. WHILE CHKING GND REF POINTS, I DISCOVER THAT I'M E OF MY INTENDED COURSE. VOR STILL INDICATES ACFT ON THE PROPER RADIAL. I TAKE CORRECTIVE ACTION AND FLY W. I WAS VERY CLOSE TO THE BORDER, MAYBE ON THE BORDER TO THE CLASS B SECTOR EXTENDING FROM 500 FT TO 7000 FT. DID NOT COME CLOSE TO OTHER ACFT, AS FAR AS I COULD SEE. SUSPECT POSSIBLE VOR RECEIVER FAULT. I RELIED TOO MUCH ON VOR BEARING FOR NAV. IN THE FUTURE, WHILE FLYING VFR, I WILL NOT USE RADIOS FOR PRIMARY MEANS OF NAV, INSTEAD XCHK WITH GND REF POINTS FREQUENTLY TO ENSURE STAYING ON INTENDED COURSE.

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.