"This is a retrograde and disappointing development," Walsh said in a statement issued by the International Air Transport Association, which counts most of the world's major airlines among its 293 members.
The Luxembourg-based General Court, however, said the annulments - and the recovery of the money - would be suspended pending new decisions by the Commission.
Ryanair can challenge those new decisions at the same court if it is not satisfied with them.
SAS said in a statement Van der Werff would join SAS on July 15 at the latest, while Avianca said it had appointed him to its board of directors and promoted Adrian Neuhauser to replace him.
Van der Werf, who is Dutch, has previous experience in Europe, having worked at Air France KLM for a decade, including as regional manager for Sweden, Finland and the Baltics.
We do have heavy debt that is holding back our balance sheet, so this may have to get looked at again later in the year.
The capital hike sees the French government more than double its stake in the airline group to almost 30% as part of a total recapitalisation package worth about 4 billion euros announced earlier this month.
Norwegian Air asked Ireland's High Court to issue repudiation orders for three sales contracts with Boeing, but lawyer Declan Murphy said this was not intended to take precedence over ongoing US legal action on the contracts.
The Atlanta-based company said its medium-term goal is to replace 10% of its jet fuel, which is currently refined from fossil fuel, with sustainable aviation fuel by the end of 2030.
That followed moves in Europe by easyJet to offset emissions on all its flights and by British Airways and Air France to do the same on their domestic flights.
"We would be hopeful that we could fly maybe 60, 70% of our normal traffic volumes during the peak summer months ... June, July, August and September," he said. "That's about as optimistic as its going to get."
"We don't need a taskforce, we just need action," O'Leary said. "The real challenge is timing here ... we need to give them the clarity to book their summer holidays."
The private airline was previously scheduled to begin its flight operations in Saudi Arabia and the United Arab Emirates from January 2021, however, the plans took a backtrack due to worldwide travel restrictions in place due to COVID lockdowns.
No details were provided on how much the airline is looking to raise from the sale, but a "benchmark" euro bond issue typically has a deal size of about 500 million euros or more.
EasyJet said that bookings for flights for this summer had soared over 300% since Britain's announcement, and holidays by more than 600%, compared to their levels last week.
Japan's second-largest carrier said it projected a net loss of 300 billion yen for the year ending March 2021, up from its previous forecast of 240-270 billion yen.