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Looks like a holding pattern. An odd one. Perhaps mechanical failure and waiting on ground resources? One could try to find their radio here comms here [1]. Maybe KBOS Final Vector, Tower and Boston Center / Guard

[1] - https://www.liveatc.net/search/?icao=kbos

Looking at the aircraft history, probably more likely a transponder problem.

Maybe scanning a high resolution map of the area north of Boston.

It’s flying from LGA to BOS.

Your link is some app artifact. It’s not real.

What is this aircraft doing?