Ahmedabad witnessed a tragic aviation disaster on Thursday when an Air India flight crashed shortly after take-off from Sardar Vallabhbhai Patel International Airport. The horrifying incident was captured on a nearby security camera, showing the aircraft struggling mid-air before crashing near the airport perimeter. The plane reportedly hit a doctor's hostel, sending thick plumes of smoke into the sky and triggering emergency response efforts across the city. The black box of AI 171 has been found and investigators will now rely on this device to uncover the details of an incident. Here, in this article, I am going to inform you about what exactly this Black Box is, and how it helps to know the cause of the mishap.

What is a Black Box in an aeroplane?
Despite its name, the black box is usually bright orange to make it easier to locate after a crash. Officially, it comprises two key components:
- Flight Data Recorder (FDR)
- Cockpit Voice Recorder (CVR)
Together, these two devices store crucial information about an aircraft’s performance and the pilot's last conversations, especially during the final moments before an incident.
Flight Data Recorder (FDR): Captures every detail of the flight
The FDR collects and stores data from hundreds of sensors throughout the aircraft. It logs critical information like:
- Altitude
- Speed
- Engine performance
- Flight path
- Control surface positions
This data allows investigators to reconstruct the entire flight timeline, understand technical issues, and analyse how the aircraft behaved during an emergency.
Cockpit Voice Recorder (CVR): Listens to the Final Moments
The CVR records all sounds in the cockpit, including:
- Pilot and co-pilot conversations
- Alarm systems
- Radio communications with air traffic control
This helps identify human errors, technical failures, or miscommunications that may have contributed to the crash.
How does it help in investigations?
When a plane crashes, the black box is recovered (it is built to survive intense impacts, fire, and deep-sea pressure). Investigators use the data to:
- Pinpoint the exact time and sequence of events
- Detect technical malfunctions
- Understand pilot actions and decisions
- Confirm weather-related or external factors
The black box plays a crucial role in making air travel safer by uncovering accident causes and helping aviation authorities prevent future disasters.
While passengers rarely see it, the black box is one of the most important pieces of safety equipment in an aircraft. It not only helps uncover the truth behind crashes but also contributes to ongoing improvements in aviation safety standards worldwide.