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With Regional Express (Rex) filing for voluntary administration, Flight Friday looks at the current state of Australia's larger operators in terms of flights.

Changes were seen at U.S., European and South American carriers, a major SAF provider, an aircraft manufacturer, and a European airport management company.

Leasing mogul Steven Udvar-Hazy says the supply-demand imbalance in the aircraft market is likely to persist for at least three to four years.

Can green hydrogen production increase quickly enough by 2035 so that air transport can, at least in part, rely on it?