Greenville-Spartanburg Bound Delta DL3570 CRJ-701ER Diverts Back and Makes Emergency Landing at Detroit Metropolitan Wayne County Airport Due to Technical Issue, Everything You Need To Know is Here

Published on November 26, 2025

By: Tuhin Sarkar

Greenville-Spartanburg bound Delta flight DL3570 CRJ-701ER declared an emergency and diverted back to Detroit Metropolitan Wayne County Airport after encountering a technical issue. The flight, which took off from Detroit at 7:11 EST on Tuesday, November 25, 2025, was heading towards Greenville-Spartanburg International Airport when the pilots identified a problem with the aircraft.

In response to the technical issue, Delta flight DL3570’s crew swiftly declared an emergency and activated the squawk 7700 code. This alert immediately notified air traffic controllers of the serious situation. The plane, a CRJ-701ER, was at 26,000 feet when it turned around over Ohio and began its descent back to Detroit.

Delta flight DL3570 made a safe emergency landing at Detroit Metropolitan Wayne County Airport, where it was met by firetrucks as a precautionary measure. The technical issue, suspected to be related to cabin pressurization, led to the aircraft being diverted. The pilots’ quick decision to return to Detroit, rather than continuing to Greenville, ensured the safety of all passengers and crew onboard. The aircraft safely landed on runway 21L and taxied back to the gate. Travel And Tour World urges readers to continue reading for more details on this emergency incident and how it was handled by Delta Air Lines.

Delta DL3570 Declares Emergency and Returns to Detroit after Issue

Delta Air Lines flight DL3570, a CRJ-701ER aircraft, took off from Detroit Metropolitan Wayne County Airport at 7:11 EST on Tuesday, November 25, 2025, bound for Greenville-Spartanburg International Airport in South Carolina. The flight had been cruising smoothly when, at approximately 26,000 feet, the pilots detected an issue. It was soon clear that the aircraft would need to return to Detroit for safety reasons. The pilots swiftly declared a general emergency, activating the universally recognised “squawk 7700” distress code. This alerted air traffic control and nearby airports that the flight was experiencing significant trouble.

The decision to turn the aircraft back towards Detroit was a crucial one, made with the safety of the passengers in mind. In emergencies such as this, pilots are trained to act quickly and without hesitation. In this instance, the flight crew chose to return to the origin airport rather than continuing to Greenville, highlighting the importance of emergency protocols and careful decision-making in aviation. As the plane descended, it held an altitude of 10,000 feet, often indicative of a cabin pressurization issue, a critical factor that requires immediate attention.

The Importance of Squawk 7700 and What It Means in Aviation

When an aircraft encounters an emergency, pilots often use a specific code to signal their situation to air traffic controllers. The “squawk 7700” code is one of the most serious codes used in aviation, indicating that a flight is facing a general emergency. This emergency code immediately alerts all parties involved in the flight’s coordination, from air traffic controllers to nearby airports, ensuring that the flight receives priority handling. In the case of Delta Air Lines flight DL3570, the pilots used squawk 7700 to declare an emergency and request immediate assistance.

For Delta, this quick decision ensured that emergency protocols were activated, allowing the aircraft to return to Detroit safely. This move likely avoided any further complications, such as an unexpected diversion to a more distant airport. It also gave air traffic controllers the chance to clear the airspace for a safe and speedy landing. When such emergencies arise, it is crucial for all parties involved—pilots, air traffic controllers, and ground crew—to work together to ensure a safe resolution. In this instance, the rapid use of squawk 7700 and the subsequent response demonstrated the level of preparedness in aviation safety.

Cabin Pressurization Issues and Their Impact on Flight Safety

One of the potential causes of the emergency declared by Delta Air Lines flight DL3570 is a cabin pressurization issue. When an aircraft experiences difficulties with maintaining the proper cabin pressure, it can lead to serious consequences. A pressurization problem means that the air inside the cabin cannot be properly regulated, which can result in discomfort, oxygen deficiency, and, in extreme cases, hypoxia for passengers and crew.

In this case, the aircraft descended to 10,000 feet, an altitude that indicates a possible cabin pressurization issue. At this level, the aircraft would have been able to provide a more stable and breathable environment for the passengers. Pressurization issues are among the most common emergencies in aviation, and they require quick and precise action to resolve. Pilots are trained to descend the aircraft to a safe altitude when such problems arise, ensuring the safety of everyone onboard. This emergency with Delta flight DL3570 highlights the critical role that cabin pressurization plays in maintaining flight safety and the importance of handling such issues promptly.

Delta Air Lines Emergency Response: How the Situation Was Handled

In situations like the one faced by Delta Air Lines flight DL3570, the airline’s emergency response protocol plays a crucial role in ensuring passenger safety. As soon as the pilots declared an emergency, air traffic controllers were notified, and emergency services were put on standby. Upon landing, fire trucks were stationed at Detroit Metropolitan Wayne County Airport runway 21L to meet the aircraft. This is a standard safety measure when an emergency landing is anticipated.

Delta’s quick decision to return to Detroit instead of proceeding to Greenville was an example of the airline’s well-rehearsed emergency procedures. The flight crew’s professionalism and training were key factors in managing the situation effectively. Emergency services at the airport were also prepared for any eventualities, ensuring that the aircraft was safely met upon landing. Once on the ground, the plane taxied back to the gate without incident, and passengers were safely disembarked. This smooth and controlled response from all parties involved ensured that the situation was resolved without harm, providing reassurance to all passengers on board.

What This Emergency Tells Us About Airline Safety and Protocols

The emergency faced by Delta Air Lines flight DL3570 serves as a reminder of the stringent safety protocols that govern air travel. While in-flight emergencies are rare, airlines like Delta are equipped with systems and procedures to manage even the most serious situations. The quick declaration of an emergency and the subsequent actions taken by the pilots show the importance of airline safety training. These protocols ensure that passengers’ safety is always the top priority, and the airline’s ability to manage the emergency effectively prevented a potentially more dangerous situation.

Moreover, this incident highlights the importance of air traffic control coordination and the readiness of emergency services at airports. By working together, airlines, air traffic controllers, and ground teams are able to respond rapidly to ensure that any potential danger is mitigated. In this case, the emergency was handled flawlessly, with minimal disruption to the flight and no harm to the passengers. This incident reinforces the trust that passengers can place in the air travel system and the measures that are in place to safeguard their journeys.