Attorney General Hamad Saif al-Shamsi's statement also suggested the co-pilot was radicalised at a mosque in Australia while attending the Royal Melbourne Institute of Technology in 2017.
The statement did not appear to implicate Flydubai in any wrongdoing, and contained the most detailed account yet from prosecutors about what they believe to have happened.
Flydubai was not immediately available for comment.
The plan was inspired by the September 11, 2001 attacks on the United States, United Arab Emirates public prosecutors think, as a result of their criminal investigation launched on October 1.
It found the suspect had used two previous flights to Tel Aviv to "familiarise himself with the flight route and the airport," the state news agency WAM reported.
It is the first public confirmation of the co-pilot's 9/11 inspiration.
The aircraft was in Saudi airspace when the co-pilot attacked captain Smit Machchhar with a crash axe, typically kept in the cockpit for use during emergencies.
Bloodied and beaten, Machchhar managed to open the cockpit door, alerting passengers and crew to the assault.
The incident caused the airliner to plunge 4900 metres in 30 seconds before the attacker was overwhelmed and two other pilots who were on board landed the aircraft safely in Saudi Arabia.
The suspect was transferred to the UAE, Flydubai's home country.
Investigators examined Flydubai's recruiting procedures and found the suspect had met all professional and security requirements, including holding a pilot's licence and providing a certificate of good conduct.
"However, none of the procedures revealed any indications of his extremist views or his intention to carry out a terrorist plot," al-Shamsi added.
He said the 29-year-old had worked for airlines in different countries including Oman Air before joining Flydubai in January 2026.
The investigation found there were signs of the suspect drifting towards "extremism and terrorism" as early as 2017, while he was studying in Australia.
Royal Air Maroc has said that he underwent three months of training there in 2025 but that his application to work for the airline afterwards was rejected.
UAE officials have not identified the suspect; however, a person with direct knowledge of the matter told Reuters he had been identified as Hammam al-Hammami, an Omani citizen.
Al-Shamsi said the suspect had told investigators he had prepared psychologically and physically for the attack by viewing material promoting terrorism and taking boxing lessons.
Saudi Arabia has launched a separate safety investigation into flight FZ1073, sources told Reuters.
with AP
