Originally Posted by
737 Driver
What appears to have happened is that for yet undetermined reasons, right at rotation the aircraft lurched to the left with a significant wing drop. During the ensuing excursion, the left wingtip struck the 5000' remaining marker before becoming airborne. Passengers and flight attendants did report the damage to the flight deck, and the aircraft returned to JFK.
That is about all we know right now. Let the investigators investigate.