SAS Group has disclosed that the Bombardier CRJ900 involved in a ground accident at Copenhagen was having its engines tested at the time.

The aircraft was not being towed, says the company, but was “undergoing a test of the engines” at SAS’s technical base before the 4 February accident.

It collided with a ground tractor, causing substantial damage, after travelling across a section of the apron, and one of the jet's landing-gear assemblies collapsed.

“The cause of the accident is still unknown but is being investigated in full compliance with our routines,” says the company.

As a result of the circumstances of the event, the Danish occupational safety authority, Arbejdstilsynet, is handling the inquiry.

The authority says it has not reached any conclusions but is looking into whether procedures were correctly followed by the parties involved.

It has not given an updated over the condition of the worker who was reportedly seriously injured in the accident.

Flightglobal’s Fleets Analyzer database shows that the aircraft involved had been transferred to the management of Cimber Air, which is carrying out regional services on behalf of SAS.

SAS had previously been involved in a ground accident at Copenhagen when an Airbus A340 under tow ran over a ramp worker with its main landing-gear in September 2010.

Source: Cirium Dashboard