The Australian flagship carrier said the 36 small fissures posed no threat to safety, and that the cracks were different from the cracks that manufacturer Airbus found in metal brackets inside the wings of two jets last month. That discovery prompted Europe's air safety authority to order the inspection of nearly a third of the world's A380s.

Qantas workers found the cracks, measuring less than 0.8 inches (2 centimeters) long, in the "wing rib feet" - the metal brackets that connect the wing's ribs to its skin - after the aircraft hit severe turbulence on a flight from London to Singapore last month. The cracks were not related to the turbulence and were linked to an Airbus manufacturing issue, the airline said in a statement.

Qantas conducted routine checks after the turbulence incident, then conducted "additional precautionary inspections" on the wings at Airbus' request, the airline said. The cracking was discovered in the precautionary inspections, said Qantas.