Indian Airlines Flight 440 was a domestic passenger flight operating on the route from Calicut to Delhi. On the fateful day, the aircraft, a Hawker Siddeley HS 748, was in the approach phase as it neared Palam Airport. Unfortunately, due to a combination of adverse weather conditions, including low visibility, and reported mechanical difficulties, the plane encountered serious difficulties while making its descent. Eyewitnesses reported that the aircraft struggled to maintain altitude before ultimately crashing into a ridge near the airport. The impact was devastating, resulting in the deaths of all 48 individuals on board, which included both passengers and crew members. The investigation that followed focused on several potential contributing factors, including the flight crew's response to the mechanical issues and the airport's handling of weather reports. Reports indicated miscommunication regarding the flight's safety and clearance to land in such precarious conditions. This tragedy underscored significant deficiencies in air traffic management and maintenance protocols within the Indian aviation system at the time. In the wake of the incident, Indian Airlines and governmental aviation authorities instituted stricter regulations and safety measures aimed at preventing such disasters in the future. Heightened awareness of air safety resulted from the investigation findings, with improvements in crew training and aircraft maintenance, ultimately seeking to bolster the overall safety of domestic air travel in India.