When inspecting power lines, G-RIDB is flown at between 300 and 500ft and at around 50 knots.

The nose-mounted Wescam MX-10 stabilised imaging system provides thermal imaging and full-motion HD video.

Bell 429 G-RIDB entered service in 2013.

G-RIDB is based at Turweston Airfield, but deploys around England and Wales each week.

The helicopter will spend up to 12 minutes inspecting a pylon.

The observer sits in front of a 22-inch Skyforce LCD monitor to view the images generated by the MX-10.