From the BBC. Better watch out, any number on here could be referred to as a plank!!!!
Plank appeal after airport fire
Police are treating the fire as suspicious
Police investigating an aircraft fire at Glasgow Airport say a dark coloured car carrying a plank of wood was seen near the terminal.
A plank was found leaning against the airport perimeter fence and is believed to have been used in the incident at 0350 GMT on Saturday.
The window of a parked bmi Embraer aircraft was damaged by the fire.
Police said the plank would have been about three feet longer than the car and therefore "very noticeable".
The car was seen in the vicinity of the airport terminal between 0330 and 0415.
Construction industry
Earlier, it was spotted travelling west on the M8 and left the motorway by the slip road leading to the terminal.
The plank is believed to have been tied to the driver's side of the car.
Detective Superintendent Jim Porteous appealled for scaffolders and people in the construction industry who may have information to come forward.
Strathclyde Police said they were treating the incident as wilful fire-raising, but were looking into all other lines of inquiry.
Flights were halted following the blaze.
