FAA investigates engine issue on Delta flight returning to Tucson

The Federal Aviation Administration (FAA) announced an investigation into an incident involving a Delta Air Lines Boeing 737-900ER. On April 14, 2025, the aircraft returned to Tucson International Airport due to engine-related issues. According to the FAA, the flight, registered as N892DN and operating as flight DL937 from Tucson to Hartsfield-Jackson Atlanta International Airport, experienced problems that led to the decision to return.

Flightradar24 records show that the flight departed Tucson at 12:43 local time and began ascending, but leveled off at about 17,000 feet before descending. At 12:55, the flight crew declared an emergency. The plane landed safely at Tucson at 13:20 and taxied to the gate while maintaining the emergency signal.

Despite the incident, the aircraft is scheduled to depart for Salt Lake City International Airport under a special flight code, DL9964, the following day, indicating potential extensive repairs. Additionally, Delta scheduled another 737-900ER, N862DN, to operate a rescheduled flight from Tucson to Atlanta under flight code DL9930.