The Northern Ireland Air Ambulance made a dramatic landing on Whitehead promenade yesterday after a motorcyclist was injured in a collision with a BMW car.
Ambulance Service paramedics raced to the scene, where they gave emergency medical aid to the injured man, before he was rushed to hospital for further treatment.
One bystander at the incident on the town's Marine Parade told the Belfast Telegraph last night: "It looks like a pretty serious accident.
"The paramedics were very careful getting the man onto the stretcher and into the ambulance. I hope he's okay."
The patient's condition in hospital has not been disclosed by the authorities.
Meanwhile in Lisburn, a woman had to be taken to hospital after a serious two-vehicle collision between a car and a motorcycle at Rathdown Road in the city.
The incident - which involved a Ford saloon and a Kawasaki motorcycle - took place just after 9am yesterday, police said.
The front passenger side of the Ford was badly damaged in the collision.
Rathdown Road - which serves a large industrial estate in the west of the city - was closed to traffic following the incident and drivers were asked to avoid the area while police carried out an investigation into the causes of the two-vehicle collision.
Diversions were in place and motorists were advised to seek alternative main routes for their journey
In a statement, a PSNI spokesman said: "Shortly before 9.20am, it was reported that a car and a motorbike were involved in a two vehicle road traffic collision at the Rathdown Road area of Lisburn.
"One woman was taken to hospital for her injuries."
Rathdown Road has since re-opened to traffic.