The chopper touched down along South Road between Guy R. Brewer Boulevard and 160th Street about 9:48 a.m. Thursday after a signal went off that convinced police they needed to land the helicopter to see what was wrong, police and witnesses said.
There were no injuries, cops said.
Police repaired the helicopter and it took off again about 11:30 a.m., witnesses said.
"I don't know what happened, but [police] took the cover off the engine and looked at it," said James McGowan, who owns a laundromat on South Road and saw the helicopter land. "There were a few cops around. They did something and then they just took off."
Jason Williams, 19, a student at York College, said the helicopter was circling the area even before 9 a.m.
"Police were everywhere. The helicopter was flying for more than an hour when it suddenly landed," Williams said, pointing to the York College ball field to indicate where the chopper touched down.
York College security guards said police told them the helicopter had some technical problems and therefore had to make an emergency landing.