The scale of the COVID-19 crisis for the global airline industry is unprecedented. But the history of lesser past crises also tells us it will recover.
The aviation industry was already expecting a severe pilot shortage over the coming years. The pandemic could make it even worse.
Qantas has faced calls to ground its entire fleet of Boeing 737s after cracks were found in three aircraft. But the incident is a threat to airlines' reputations rather than a real risk to passengers.
Recent advances in technology and new trends in commercial air travel could make supersonic flight economically viable. But regulations will have to change first.