Description:A Qantas aircraft grounded. Another safety headache for the airline. The cracks on the plane's wings were found after the Qantas A380 hit severe turbulence flying from London to Singapore last month, but Qantas insists they're a manufacturing issue and pose no danger. The airline says the plane will be grounded for a week for repairs. The Australian flag carrier says 36 hairline cracks were found after manufacturer Airbus recommended additional precautionary inspections.(1:37)