"Light airplanes are an ideal terrorist weapon. That they may pose little physical danger is really quite irrelevant."
No they're not, and yes it is relevant.
This is about a balanced attitude to risk; It is far easier and more effective to drive a car full of explosives into a shopping precinct and detonate it, or jump on to a crowded underground with a phial of sarin gas, than it is to find a qualified pilot, recruit him, steal an aircraft and then to navigate to somewhere - undetected - to work one's mischief. Surely this report was written by the same people who have driven the campaign for high vis vests - trying to legislate for an event which is highly unlikely, and producing a solution that is highly unsuitable...
Of course as a community we have to be vigilent of suspicious activity, but lets get real here, one form of terrorism is easy to perpetrate almost impossible to prevent and the other is, by comparison, difficult and conspicuous; as a terrorist, which would you go for?
Actually, It's almost possible to start to feel a degree of nostalgia for the IRA - and least, for the most part, they 'phoned up to say that a bomb was about to go off! In retrospect, that seems almost seems civilised.