US carrier Delta Air has lifted a worldwide grounding of its flights, with some planes now taking off. The grounding was caused by a computer breakdown following a power outage.
Delta Air Lines said on Monday that it had resumed some flights after it grounded planes worldwide owing to a computer outage.
However, it said cancellations and delays would continue after the three-hour halt in departures, and gave no expected time frame for operations to completely return to normal.
The grounding on Monday morning disrupted the travel plans of thousands of passengers.
In a statement, Delta said the breakdown was caused by a power outage in its hub in Atlanta in the US state of Georgia.
The airline said its IT systems everywhere were affected, with the company website among the applications hit. Planes that were already en route when the outage set in continued as normal.
Delta runs flights to destinations in 64 countries and is one of the world's largest airlines in terms of passenger numbers.
tj/kl (dpa, AP, AFP)