Virgin Australia

The country's second-largest carrier cut almost all flights last month following wide-spread travel bans.

It was already struggling with a long-term A$5bn (£2.55bn; $3.17bn) debt.

The airline is now seeking new buyers and investors, after failing to get a loan from Australia's government.

Virgin Australia chief executive Paul Scurrah said: "Our decision today is about securing the future of the Virgin Australia Group and emerging on the other side of the Covid-19 crisis.

"Australia needs a second airline and we are determined to keep flying."

The illegal broadcasts were made over several weeks at Melbourne's main Tullamarine and Avalon airports, the Australian Federal Police (AFP) said.

Local media reported a portable radio may have been used to interfere with air traffic control.

The incidents did not pose a continuing threat to safety, the AFP said.

ABC News reported that a Virgin Australia plane changed altitude before aborting its landing after receiving instructions from a mystery person on 27 October.