Narrative:

I was on a routine flight, conducting a flight review just about 18 NM north of teb, when I spotted traffic converging on our aircraft from the east (headed wbound). I was at the same altitude traveling northbound, and therefore descended to a lower altitude to allow him to pass over us (as he had the right of way). As the aircraft in question passed over us, it broke hard right, and started to descend upon us. I therefore instructed my student to start a further descent, and to turn so as to evade the aircraft. The aircraft continued to tail us. I took control of the aircraft and initiated a climbing turn to evade the pursuer. The other aircraft continued to chase us down. He met every one of our evasive maneuvers, and continued to close in on us. I then decided to head straight for teb. The pursuer continued until he realized that I was about to enter the class D around teb, and then fled to the west. This was quite unsafe. I cannot understand why the person in question would initiate this type of harassment. Unfortunately, I could not get the aircraft registration number. However, the aircraft in question was a high-wing, much like those of cessna design. I am not sure if there have been any similar events in the surrounding area. It was definitely a very unsafe situation.

Related reports:

Google
 

Original NASA ASRS Text

Title: PA28 INSTRUCTOR AND STUDENT PLT ENCOUNTER AN SMA WHICH MANEUVERS IN APPARENT PURSUIT DESPITE EVASIVE ACTION UNTIL RPTR'S ACFT APCHS TEB CLASS D AIRSPACE.

Narrative: I WAS ON A ROUTINE FLT, CONDUCTING A FLT REVIEW JUST ABOUT 18 NM N OF TEB, WHEN I SPOTTED TFC CONVERGING ON OUR ACFT FROM THE E (HEADED WBOUND). I WAS AT THE SAME ALT TRAVELING NBOUND, AND THEREFORE DSNDED TO A LOWER ALT TO ALLOW HIM TO PASS OVER US (AS HE HAD THE RIGHT OF WAY). AS THE ACFT IN QUESTION PASSED OVER US, IT BROKE HARD R, AND STARTED TO DSND UPON US. I THEREFORE INSTRUCTED MY STUDENT TO START A FURTHER DSCNT, AND TO TURN SO AS TO EVADE THE ACFT. THE ACFT CONTINUED TO TAIL US. I TOOK CTL OF THE ACFT AND INITIATED A CLBING TURN TO EVADE THE PURSUER. THE OTHER ACFT CONTINUED TO CHASE US DOWN. HE MET EVERY ONE OF OUR EVASIVE MANEUVERS, AND CONTINUED TO CLOSE IN ON US. I THEN DECIDED TO HEAD STRAIGHT FOR TEB. THE PURSUER CONTINUED UNTIL HE REALIZED THAT I WAS ABOUT TO ENTER THE CLASS D AROUND TEB, AND THEN FLED TO THE W. THIS WAS QUITE UNSAFE. I CANNOT UNDERSTAND WHY THE PERSON IN QUESTION WOULD INITIATE THIS TYPE OF HARASSMENT. UNFORTUNATELY, I COULD NOT GET THE ACFT REGISTRATION NUMBER. HOWEVER, THE ACFT IN QUESTION WAS A HIGH-WING, MUCH LIKE THOSE OF CESSNA DESIGN. I AM NOT SURE IF THERE HAVE BEEN ANY SIMILAR EVENTS IN THE SURROUNDING AREA. IT WAS DEFINITELY A VERY UNSAFE SIT.

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.