Qantas told pilots aircraft had experienced GPS jamming suspected to originate from warships (pictured) operating off the north west shelf of Australia https://www.dailymail.co.uk/news/article-11870693/Qantas-warns-crews-Chinese-military-interfering-planes.html
Qantas has warned its pilots of radio interference from people claiming to be Chinese military, and GPS jamming from Chinese warships.
The airline updated its flight standing orders manual on Thursday to include policies on what to do if crews encounter this.
The policy update informed pilots that flights had encountered both hostile actions, sometimes very close to Australia, but safety was not compromised.