IndiGo flight 6E04 was forced to turn back to London Heathrow shortly after taking off on Tuesday, 22 September. The flight had departed Heathrow at 8:39pm for a planned 10-hour trip to Delhi, India. About 20 minutes into the journey, the plane made a U-turn and returned to London after flying east over the English Channel. During the return trip, the aircraft sent an emergency signal known as squawk code 7700, which is used to alert air traffic control of a general emergency requiring immediate attention. The Boeing 787 landed safely at Heathrow around 9:20pm, less than an hour after departure. IndiGo confirmed that a technical issue was detected shortly after takeoff and that the pilots followed standard procedures to ensure the safe return of the aircraft. The plane is now undergoing maintenance checks and will only resume service once it has received the necessary approvals. To reduce passenger inconvenience, the airline provided hotel accommodations and rebooked passengers on the next available flights to Delhi. This incident follows a similar event earlier in September, when a British Airways flight experienced a technical problem during its journey. The flight, which was scheduled to land at Heathrow after departing from Dublin, Ireland, declared an in-flight emergency. However, the aircraft landed safely after a minor technical issue was resolved. British Airways confirmed the flight was not diverted from its original route and that no serious safety concerns were involved. Both incidents highlight the importance of emergency protocols in aviation, ensuring that technical problems are addressed swiftly and safely. While such occurrences are rare, they underscore the rigorous training and procedures in place to protect passengers and crew during unexpected situations.