The plane suffered "extreme fluctuations" in altitude after declaring a flight emergency, according to Flightradar24 data.
Line chart showing the altitude of Flydubai flight FZ1073 from Dubai to Tel Aviv. The aircraft climbed to about 34,000 feet, then dropped roughly 14,000 feet in 29 seconds. It flew near 15,000 feet before descending to ground level at 2:58 a.m. Eastern time on Sept. 30.