Flydubai flight FZ1073 from Dubai to Tel Aviv diverted to Tabuk, Saudi Arabia after a violent fight between the two pilots in the cockpit.
All ~174 passengers (including 27 children, many Israeli) are safe.
The Boeing 737 MAX 8 was cruising at ~34,000 ft when it made a steep 17,000 ft descent over northwestern Saudi Arabia with altitude oscillations and speed changes.
The transponder first squawked 7700 (general emergency), then briefly 7500 (hijack/unlawful interference), then back to 7700 before landing safely at Tabuk.
The 7500 code triggered an Israeli military response.
IAF jets scrambled, Netanyahu and the defense minister held consultations. The situation was later clarified as an internal cockpit incident, not a security threat.
Passenger accounts from Israeli media:
Screaming from the cockpit, the cockpit door opened with blood visible, claims one pilot was stabbed with a pocketknife, a sudden dive that terrified passengers, and crew/passengers helped restrain someone.
Israeli media reports the captain was Russian and first officer Ukrainian. Flydubai has not confirmed nationalities or names.
Some Israeli outlets (Channel 14) speculate one pilot may have tried to put the aircraft into a deliberate dive, not confirmed by any authority. Motive and exact injuries remain under investigation.
Flydubai said the flight "experienced an incident while en route" and is sending a replacement aircraft from Dubai.
Saudi security was present at the aircraft after landing. Investigations involve the airline and Saudi/Israeli authorities.