Europe's air safety watchdog has extended a mandatory inspection order to all Airbus 380s that have completed more than 1,300 flights.
The move comes after Singapore Airlines and Qantas found cracks in the wings of their A380s.
The European Aviation Safety Agency (EASA) said 68 aircraft operated by Emirates, China Southern Airlines and another four carriers were to be checked for wing cracks which it feared could lead to structural problems for the aircraft.
Inspections were ordered on about 20 of the older A380s in service on January 20.
In an e-mail to the South China Morning Post, Singapore Airlines spokesman Nicholas Ionides said the airline ran checks on brackets within the wings of eight of its A380s and found cracks on every aircraft.
Repairs were made and all eight aircraft are back in service.