The Aussie airline grounded the jet in question after discovering the cracks during a maintenance inspection.

The inspection came after the plane experienced severe turbulence on a flight.

According to reports, the European Aviation Safety Agency (EASA) has ordered that all A380s – across all airlines – be checked.

The A380 is the world’s biggest passenger aircraft, and can carry up to 800 people.

The A380 is in use by Qantas, Singapore Airlines, Emirates, Air France, Lufthansa, Korean Airlines and China Southern, and has only been in service for five years.

Qantas said in a statement: “This cracking is not related to the turbulence, or specific to Qantas, but is traced back to a manufacturing issue.”

The cracks are said to measure no more than two centimetres in length, and Airbus has insisted that they posed no threat to flight safety.

Picture: Getty