What novel by Ian McEwan features death of a man and runaway hot air balloon?

The novel by Ian McEwan that features the death of a man and a runaway hot air balloon is "Atonement".

In the novel, the hot air balloon crash is a pivotal event that sets the stage for the rest of the story. The death of the man in the balloon, along with the subsequent events that unfold, have a profound impact on the characters and the overall narrative.