Precautionary inspections on brackets within the wings of Airbus A380 superjumbos have been carried out by Singapore Airlines.

The airline has repaired cracks to wing parts on one aircraft, according to a spokesman.

“Checks have been carried out on four aircraft and there were findings during each inspection. One aircraft has already undergone repairs and is back in service. Repairs will be carried out before the remaining aircraft are returned to service,” he told Dow Jones Newswires.

The carrier is required to check an initial six aircraft by Saturday in accordance with an airworthiness directive issued by the European Aviation Safety Agency.

Some flights from Singapore to London and Zurich will be operated with Boeing 777s instead of A380s in the coming days.