A light aircraft has crashed at Oxenhope airfield.
Early reports suggest the two-seater flipped over at the end of one of the moorland airstrip's two runways.
There are not believed to be any serious injuries.
Four fire appliances from across West Yorkshire – plus a technical rescue vehicle and support team – attended initially when the call was received this afternoon, together with police and ambulance crews.
But a fire service spokesman said one pump had since been stood down.