A FlyDubai flight to Tel Aviv dropped sharply and diverted after what looks like an attempted hijacking, a frightening sign for air travel into Israel.

• The plane fell more than 14,000 feet in about 30 seconds and signaled it was being hijacked.
• A co-pilot reportedly stabbed the pilot, which would mean the threat came from inside the cockpit.
• The flight was said to be carrying many Israeli passengers, raising fears it was targeted for that reason.
• One unconfirmed worry is that the aircraft could have been aimed at Israel as a weapon.

Outlook: Expect tighter cockpit and crew screening on flights into Israel while investigators confirm what actually happened.