Drones are banned from the TT course during the festival.

The Isle of Man Civil Aviation Administration has reminded residents and visitors not to use drones to film the TT and is warning of potential prosecution and fines for those that infringe a ’no drone zone’.

On Monday afternoon a drone was spotted over Union Mills.

But its owner was not traced.

A ’no-fly’ zone is in place till Saturday (June 8). It covers the course, including all of the area within the course as well as 1,000 metres outside the course during the times when the road closures are in force.

Breach of the restriction is an offence which is punishable on conviction by a fine of up to £2,500.

Airspace restrictions in the vicinity of the airport mean that drone flying is also prohibited at the pre- and post-TT meetings held at the Billown Circuit.

Deputy director of civil aviation, Colin Gill, said: ’The air space above the TT course can get busy with emergency and filming activity by helicopters before, during, and after racing or practising takes place.

’Drones can also pose a serious distraction to riders therefore race marshals are informed to immediately report any drones to race control and the police, which may result in the practice or race being halted.’

There are further restrictions in place affecting the Billown Circuit located within 5km of the airport, within which drones are always prohibited due to the dangers they could pose to an aircraft taking off or landing.

They were banned over Douglas while the Red Arrows performed on Tuesday evening.

The Civil Aviation Administration is a division of the government’s Department for Enterprise.