During the Paris Air Show, Airbus on Thursday reported robust orders of nearly $21 billion, while Boeing kept a low profile as it struggles with a host of issues.

The show is happening at a delicate time for Boeing, which is coming off its best month for sales in a year and a half and a deadly plane crash in India involving one of its aircraft.

Airbus secured more aircraft orders on Wednesday, raising its total to $21 billion at this week’s subdued Paris Air Show, while rival Boeing opted not to announce new sales following last week’s Air India 787 crash.