ROMA91 US Air Force plane declares Squawk 7700 emergency after Prestwick take-off

A US military plane has declared a mid-air emergency just minutes after taking off from a Scots airport.

The McDonnell Douglas KC-10A Extender, with callsign ROMA91, took off from Glasgow Prestwick Airport in Ayrshire at around 10.06am on Thursday.

It declared a Squawk 7700 emergency at around 10.12am.

HeraldScotland: FlightRadar.comFlightRadar.com

It is not yet known what sparked the emergency call, however a Squawk 7700 is used to identify an aircraft that has a possible issue and enables it to have priority over other air traffic. 

At time of writing, the plane, which is operated by the US Air Force, has circled while travelling over the First of Clyde and looks to be returning to Prestwick Airport.

The Herald has approached the US Air Force for comment.

This is a breaking story and will be updated.

The Herald Scotland

The Herald Scotland

The Herald is a Scottish broadsheet newspaper founded in 1783. The Herald is the longest running national newspaper in the world and is the eighth oldest daily paper in the world. The title was simplified from The Glasgow Herald in 1992