A mystery low-flying plane that looped over Ireland for hours before jetting off has left people baffled for nearly two weeks but it's finally been explained.
The plane passed by Dublin Airport at the start of November before hovering over the midlands leaving locals looking to skies and scratching their heads.
The Cessna Model 404 Titan left East Midlands Airport in Derby just after 11pm on November 3pm, flying back and forth over Ireland before returning to the UK landing at Nottingham Airport just before 6am.
Hundreds took to social media complaining about the plane while others were "fascinated" by what was happening.
A spokesperson for the group responsible for the plane said that they were sorry for any disturbance but confirmed that they were carrying out a survey.
A spokesman for RVL Group said: "The flight was carried out in full accordance with all applicable regulations and civil aviation authorities.
"Some of the survey work we undertake for various environment, government agencies and entities can only be carried out at night for operational and technical reasons.
"The sensors on board the aircraft collect data in ‘strips’ of varying width depending on the resolution of data required, hence the up and down flying patterns.
"These ‘strips’ are then joined together to produce a complete survey of the area being studied.
"Night-time flights are usually collecting thermal data or LiDAR imagery to be used in constructing 3D models of the terrain, often to calculate changes in flood risk by environmental agencies."