By Nilambar Rath
Uncover how global air crash investigations turn tragedy into vital lessons that make flying safer for everyone
In the immediate aftermath of an air disaster like the tragic crash of Air India Flight AI171 at Ahmedabad on 12 June 2025, public attention is rightfully focused on the human loss and the search for immediate answers. However, as the headlines fade, a meticulous, complex, and globally coordinated process begins—one that is less about blame and more about prevention.
The preliminary report from India’s Aircraft Accident Investigation Bureau (AAIB) is just the first public step in a journey that involves international cooperation, advanced forensics, and a collaborative commitment to ensuring such a tragedy never happens again. This process, governed by international treaty, is expected to be the bedrock upon which modern aviation safety should be built.
The Guiding Principle: No Blame, Only Prevention
The entire framework for international air accident investigations is built upon a single, crucial principle enshrined in Annex 13 to the Convention on International Civil Aviation Organization (ICAO), a United Nations specialized agency.
As stated in the foreword of the AAIB’s report on the Ahmedabad crash, “the sole objective of the investigation of an Accident/Incident shall be the prevention of accidents and incidents and not to apportion blame or liability.”
This “no-blame” culture is not about absolving responsibility; it is a pragmatic approach designed to encourage transparency. By separating the safety investigation from any judicial or administrative proceedings, it ensures that pilots, air traffic controllers, maintenance crews, and airline officials can provide information freely without fear of self-incrimination. This unhindered flow of information is vital for investigators to understand not just what happened, but why it happened.
A Global Team Assembles: The Key Players
No single country investigates a major international crash in isolation. Annex 13 mandates a collaborative structure, bringing together expertise from around the world. The key participants typically include:
- The State of Occurrence: The country where the accident took place leads the investigation. In the case of Flight AI171, this is India, represented by the AAIB. This agency is responsible for securing the crash site, gathering evidence, and publishing the final report.
- The State of Design and Manufacture: The country where the aircraft and its critical components (like engines) were built has the right to appoint an Accredited Representative. For a Boeing 787 with General Electric engines, the U.S. National Transportation Safety Board (NTSB) is the primary participant, bringing expertise on the aircraft’s design and systems.
- The State of the Operator: The home country of the airline involved also participates. For Flight AI171, this is again India.
- States with Fatalities: Any nation that has lost citizens in the crash is entitled to appoint an expert to the investigation to observe the process and receive safety information relevant to their people.
This multi-national structure, as seen in the Ahmedabad investigation with involvement from the US, UK, Canada, and Portugal, ensures transparency, prevents national bias, and pools global knowledge to solve the complex puzzle of a modern air crash.
From Wreckage to Recommendations: The Investigation Process
The investigation itself is a painstaking process that can take months, or even years, to complete. It moves from the physical evidence of the crash site to a deep analysis of data and human factors.
- Securing the Site and Analyzing Wreckage: Investigators meticulously map the debris field to understand the aircraft’s trajectory and angle of impact. Key components—engines, control surfaces, and in the case of AI171, the fuel control switch quadrant—are recovered for detailed forensic examination in a lab.
- The ‘Black Boxes’: The Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR) are often the most critical pieces of evidence. The FDR provides a second-by-second log of thousands of flight parameters, while the CVR captures the conversations and ambient sounds in the cockpit. Together, they allow investigators to reconstruct the flight’s final moments with incredible accuracy.
- Data-Driven Analysis: The investigation goes far beyond the black boxes. Teams analyze the aircraft’s maintenance history, the pilots’ training and medical records, weather conditions, and air traffic control communications to build a complete picture of all contributing factors.
The Ripple Effect: How Reports Drive Global Aviation Safety
The ultimate output of an investigation is not a verdict of guilt, but a set of safety recommendations. While these recommendations are not legally binding, their influence is immense. Airlines, manufacturers, and regulators are under intense public and industry pressure to adopt them. The history of aviation is a story of learning from tragedy.
- Upgrading Technology: Past crash investigations have been the direct impetus for life-saving technologies now standard on every airliner. The investigation into a 1974 crash led to the development of the Ground Proximity Warning System (GPWS), which has virtually eliminated “controlled flight into terrain” accidents. The 1986 mid-air collision over Cerritos, California, accelerated the mandatory implementation of the Traffic Collision Avoidance System (TCAS).
- Making Protocols Robust: Findings often lead to fundamental changes in Standard Operating Procedures (SOPs). The concept of Crew Resource Management (CRM), which trains flight crews to work as a collaborative team, was born from investigations in the 1970s that found that autocratic captains were not listening to their junior crew members. Today, CRM is a global standard.
- Improving Aircraft Design: Manufacturers like Boeing and Airbus constantly use findings from accident reports to improve the design and safety features of their aircraft, from strengthening fuselage structures to making cockpit controls more intuitive and less prone to human error.
So, while the preliminary report on Flight AI171 provides a tragic glimpse into what went wrong, it is also the first step in a time-tested global process. This collaborative, blame-free investigation is the aviation industry’s solemn promise that every accident, no matter how devastating, will yield lessons that make the skies safer for everyone.
(A veteran media personality, communication specialist and SBCC expert, the author is the Editor of OdishaLIVE and OdishaPlus, leading the strategy for their digital and social media channels.)