Qantas grounds Airbus fleet after mid-flight engine scare

Qantas, Australia's national airline, grounded its Airbus A380 fleet indefinitely after part of a plane's engine cover fell off mid-flight on Thursday.

The airline said the twin-deck planes -- the world's largest airliners -- will remain suspended until an investigation into Thursday's incident is complete.

"As long as it takes," said airline CEO Alan Joyce, when a reporter asked him how long the suspension will last. "We are being very cautious until we know exactly what caused this."