The full year results in early June will addup the writedown for the shareholdings in Aer Lingus for each quarter. It would be rougthly €200 million. They also may need to writedown the values of planes expected to be sold.
As Easyjet reported this week, it is a very hard time to sell planes and the airlines who are buying are having problems raising cash. Also the weak pound will reduce the income when converted into euros.
It is also very likely that may of the 5.3 million seats sold were dumped onto the market at near zero cost. many will end up in no-shows. See what happens on the 2nd June.