One man died and two members of his family were seriously injured when their light aircraft crashed on landing at Caernarfon Airport in Wales.
The plane reportedly flipped over on approach to the runway.
Fire crews cut one man from the wreckage of the craft, said to be an eight seater Piper Cherokee, and was pronounced dead at the scene. A 60-year-old man on board suffered "serious multiple lower limb injuries" and a boy injuries to his head and abdomen.
All three were from the same Lancashire family, said police.
The two survivors were taken to hospital in Ysbyty Gwynedd, Bangor, where their condition is said to be critical.
The crash will be investigated by the Department for Transport's Air Accidents Investigation Branch (AAIB).
An AAIB spokesman said: "We are aware of the incident and have dispatched a team to carry out a preliminary inspection."
North Wales Police said family liaison officers are currently supporting the family.
Richard Birch, who arrived at the airport at about midday, told Wales Online: "The air ambulance was already there. There were fire engines and ambulances all over the runway.
"The plane was upside down. It had gone through the runway and crashed into some gorse bushes."
Chief Inspector Darren Wareing said: "An investigation is on-going and we are appealing to anyone who witnessed the plane as it approached the runway of Caernarfon Airport to contact police."
Anyone who witnessed the crash is asked to call North Wales Police on 101.