Deutsche Lufthansa AG posted a record 6.7 billion-euro ($8.1 billion) annual loss and said it will take longer than previously anticipated to achieve a full recovery from the coronavirus crisis. Europe’s biggest airline group said Thursday it will struggle to make money on flights before the end of this year as it dials back capacity plans. Chief Executive Officer Carsten Spohr said there could still be a revival this summer, but only if the pace of jabs allows international curbs to be eased. “We expect demand to pick up again as soon as restrictive travel limits are reduced by a further roll-out of tests and vaccines,” Spohr said in a statement. “Internationally recognized, digital vaccination and test certificates must take the place of travel bans and quarantine.”