News in 5: Air Asia flight chaos; Porn king wants 'dirt' on Trump; HSC begins in NSW.

1. ‘We said goodbye to each other.’ Air Asia flight from Perth to Bali plunges 20,000 feet.

Passengers aboard an Air Asia flight travelling from Perth to Bali believed they were going to die when the plane suddenly plunged 20,000 feet just 25 minutes after take-off.

Oxygen masks fell from the ceiling and passengers were told to take the brace position as the plane - flight QZ535 - was forced to make an emergency landing due to a problem with cabin pressure.

Passengers said they didn't know what was happening because most of the plane's onboard announcement weren't in English, AAP reports.

"The panic was escalated because of the behaviour of staff who were screaming, looking tearful and shocked," passenger Clare Askew told reporters at Perth Airport.

"Now, I get it, but we looked to them for reassurance and we didn't get any."

Perth woman Leah told Nine News said the ordeal was "really upsetting."

"I actually picked up my phone and sent a text message to my family, just hoping that they would get it," Perth woman Leah told Nine News.

"We were all pretty much saying goodbye to each other."

The flight returned to Perth safely and passengers were rescheduled.

Air Asia also issued a statement saying the airline "apologises or any inconvenience caused" and that the "safety of our guests is our utmost priority".

2. Game of Thrones star Sophie Turner and singer Joe Jonas announce engagement.

#GOT Sophie Turner and Joe Jonas are engaged - https://t.co/8mPnPQ5YDX https://t.co/kjWByKzs77 #Gameofthrones pic.twitter.com/GV5lH9XYz3

— Game of Thrones News (@GameofThroneVII) October 15, 2017

Another Game of Thrones engagement!

Sophie Turner, who we know best as Sansa Stark in GoT, has just said "yes" to musician Joe Jonas of the rock band Jonas Brothers.

On Sunday, 21-year-old Turner posted an image to Instagram that shows a pear-shaped diamond engagement ring with the caption: "I said yes".

And, ah, you're going to want to see this ring.

I said yes.

A post shared by Sophie Turner (@sophiet) on Oct 15, 2017 at 10:39am PDT

Jonas, 28, posted the same images to his account, captioning it: "She said 'yes'."

According to People, the pair have been dating since November last year and made the relationship "Instagram official" this January.

3. New rape allegations against Harvey Weinstein, as Woody Allen tries to 'stop the witch hunt'.

Weinstein facing three new sexual assault allegations in London: report https://t.co/O2h0bZSkVT pic.twitter.com/qlz1MdKe4Z

— The Hill (@thehill) October 15, 2017

British police are investigating three new allegations of sexual assault against film producer Harvey Weinstein, all made by the same woman.

London's Metropolitan Police force said on Sunday that the woman reported being assaulted in London in 2010, 2011 and 2015.

The force said officers from its Child Abuse and Sexual Offences Command are investigating.

This comes after British actress Lysette Anthony says she reported to police on Wednesday alleging that Weinstein raped her in her west London home in the late 1980s.

"It was pathetic, revolting," she was quoted as saying in a Thursday interview with the Sunday Times, AAP reports. "I remember lying in the bath later and crying."

Woody Allen has also weighed in on the drama, saying the allegations are "sad" and warning against a "witch hunt."

"The whole Harvey Weinstein thing is very sad for everybody involved," Allen, who was accused to molesting his stepdaughter, told the BBC. "Tragic for the poor women that were involved, sad for Harvey that his life is so messed up. There's no winners in that, it's just very, very sad and tragic for those poor women that had to go through that."

Allen added that he hoped the revelations would improve matters, but warned against a "witch hunt."

4. HSC exams begins today for 70,000 NSW students.

The HSC will begin for 70,000 Year 12 students across NSW after years of schooling and, for many, months of frantic study.

This year marks the 50th anniversary of the first HSC exam.

First of the 117 written exams to be held between Monday and November 7 will be English.

More than 60,000 students taking English Standard, English Advanced or English as a Second Language will begin their exams today at 10.20am.

Premier Gladys Berejiklian and Minister for Education Rob Stokes congratulated all HSC students on reaching this point and wished them well in the coming weeks.

"I want to congratulate every student on their diligence in getting to this final stage of their HSC," Ms Berejiklian said in a statement on Sunday.

5. Porn king offers $12.6 million for dirt on Donald Trump in a bid to have him impeached.

Larry Flynt ad offering $10M on Trump dirt https://t.co/t57YJefbsB

— FOX Business (@FoxBusiness) October 13, 2017

Pornography publisher Larry Flynt is offering "up to US$10 million" (AU$12.6 million) to anyone who produces information that leads to US President Donald Trump's impeachment and removal from office.

He lays out the offer in a full-page ad in the Sunday edition of The Washington Post.

During last year's presidential campaign, Flynt dangled US$1 million to anyone who could turn over video or audio capturing Trump behaving in an illegal or sexually demeaning manner.

That followed the release of the 2005 Access Hollywood video in which Trump bragged of imposing himself on women.

In Sunday's ad, Flynt asks for any "smoking gun" that is fit to publish and drives Trump from office.

The White House didn't comment.

6. Hit-run driver in court over Melbourne nurse's death.

Hit-and-run suspect Sebastian Kennett charged over death of Melbourne nurse Lynda Hansen: https://t.co/5tCDNk0SWf pic.twitter.com/kvTj1JOZGJ

— The New Daily (@TheNewDailyAu) October 13, 2017

A man accused of evading police after he was involved in a fatal crash that killed a Melbourne nurse is due to appear in court.

The 20-year-old has been in custody since he was arrested on Thursday, three days after a fatal crash at Oakleigh on October 9 which killed cardiac nurse Lynda Hansen, AAP reports.

"Lynda was a very caring and family orientated person," her family said in a statement on Tuesday.

"She was a compassionate cardiac nurse at a large private hospital and was excited to be commencing a new position within the hospital in the next week."

It's alleged a stolen Lexus ran a red light and crashed into her hatchback.

The alleged driver has been charged with culpable driving, dangerous driving causing death, failure to stop after a collision with a fatality, failure to render assistance after a fatal collision, theft of a motor vehicle, and driving while disqualified.

He will face Melbourne Magistrates' Court on Monday.