What caused the mysterious sound before the impact on Air India 171?

 

The exact cause of the mysterious sound heard before the impact of Air India 171 is still under investigation. However, based on initial reports and expert analysis, several possibilities are being considered:

• Engine Failure/Thrust Loss: Many aviation experts are suggesting a possible dual engine failure or significant loss of thrust in both engines. A sudden loss of power from the engines could generate unusual sounds as the aircraft struggles to maintain lift.
• Bird Strike: A bird strike, especially one involving multiple birds or large birds, could potentially cause severe damage to the engines, leading to engine failure and associated loud noises.
• Flap or Landing Gear Issue: Reports indicate the aircraft's landing gear remained down, and there's speculation about the correct flap setting during takeoff. Issues with these systems could produce abnormal sounds as they malfunction or struggle to operate as intended.
• Structural Failure: While less common, a sudden structural failure of a part of the aircraft could also produce a loud, unusual sound before the final impact.

The black boxes (Flight Data Recorder and Cockpit Voice Recorder) have been recovered and their analysis will be crucial in determining the precise nature of the sound and the sequence of events that led to the crash. The Cockpit Voice Recorder, in particular, will capture all cockpit audio, including pilot conversations, warning alarms, and ambient mechanical sounds, which will provide vital clues.

A preliminary report on the accident is expected within 30 days, with the final report taking up to a year to be released, providing a complete analysis of the causes and contributory factors.