NEW DELHI — The long-awaited investigation into the June 2025 crash of Air India Flight 171, one of India’s deadliest aviation disasters in recent history, is expected to conclude within six weeks, with a “draft final report” slated for completion by October, the Centre informed the Supreme Court on Tuesday. The announcement, made in an affidavit submitted to the court, marks a critical milestone in a probe that has stretched over 16 months, leaving families of victims and aviation safety advocates demanding answers amid persistent delays and opacity.
The crash, which occurred moments after takeoff from an undisclosed Indian airport on June 12, 2025, killed all but one of the 182 passengers and crew on board, along with 19 individuals on the ground. The disaster sent shockwaves through India’s aviation sector, reigniting debates over regulatory oversight, investigative transparency, and the systemic vulnerabilities that have plagued the country’s air safety record. The Centre’s affidavit, reviewed by Herald Express, states that the Aircraft Accident Investigation Bureau (AAIB) has completed “all necessary technical examinations, simulations, and data analyses” required to determine the probable cause of the crash. However, the document stops short of revealing whether the agency has identified a definitive cause or shared preliminary findings with stakeholders, including victim families.
What Happened: The Crash and the Investigation So Far
Air India Flight 171, a narrow-body jet operating on a domestic route, crashed shortly after takeoff under circumstances that remain officially undisclosed. While the AAIB has not released a preliminary report detailing the sequence of events, aviation experts speculate that the investigation has likely examined a range of potential factors, including mechanical failure, pilot error, air traffic control miscommunication, or a combination of systemic failures. The Centre’s affidavit confirms that the AAIB has collaborated with international authorities, including the U.S. National Transportation Safety Board (NTSB) and the aircraft’s manufacturer, to validate its findings. However, it does not clarify whether the manufacturer provided unrestricted access to proprietary flight data or design specifications—details that are often pivotal in determining whether a crash was caused by a design flaw, maintenance lapse, or operational error.
The investigation’s timeline has been a point of contention since its inception. In August 2025, a group of bereaved families filed a petition in the Supreme Court, alleging that the AAIB’s administrative ties to the Directorate General of Civil Aviation (DGCA)—India’s aviation regulator—created a potential conflict of interest. The families demanded the formation of an independent oversight committee to monitor the probe, arguing that the AAIB’s dual role as investigator and regulator could compromise the integrity of its findings. The Supreme Court, in response, directed the Centre to provide periodic updates on the investigation’s progress. Tuesday’s affidavit is the first substantive report since the case was last heard in May 2026, offering a glimmer of closure for families who have spent over a year in legal and emotional limbo.
Why It Matters: Aviation Safety, Regulatory Trust, and Public Accountability
The AI-171 crash is not merely a tragedy but a litmus test for India’s aviation safety framework. The disaster occurred against the backdrop of a rapidly expanding domestic air travel market, where passenger traffic has surged by nearly 20% annually since 2020. This growth has strained infrastructure, regulatory capacity, and safety protocols, raising concerns about whether India’s oversight mechanisms can keep pace with the sector’s expansion. The AAIB’s investigation, therefore, carries implications far beyond the immediate cause of the crash. Its findings could expose systemic weaknesses in maintenance practices, pilot training, air traffic control procedures, or regulatory enforcement—failures that, if left unaddressed, could precipitate future disasters.
The Centre’s assurance of a near-term conclusion to the probe may ease some public anxiety, but it also underscores the inherent complexities of modern aviation investigations. Unlike crashes in earlier decades, where mechanical failures were often the primary focus, contemporary probes must dissect a labyrinth of interrelated factors, including human error, software systems, maintenance records, and real-time air traffic communications. The AAIB’s collaboration with international agencies reflects the globalized nature of aviation manufacturing, where critical components and data are frequently controlled by foreign entities. For instance, if the investigation points to a flaw in the aircraft’s avionics or engine systems, the manufacturer’s cooperation—or lack thereof—could significantly influence the final report’s conclusions.
Yet, the opacity surrounding the investigation has fueled skepticism among safety advocates and victim families. Aviation experts argue that delays in releasing interim findings can erode public trust, particularly when families are left without answers for prolonged periods. The Centre’s affidavit does not indicate whether the AAIB has shared any preliminary conclusions with the families or the court—a practice followed in other major aviation investigations, such as the probes into the 2018 and 2019 Boeing 737 MAX crashes. In those cases, interim reports were released within months, providing affected families and the public with a clearer understanding of the likely causes while the investigation continued.
The Supreme Court’s involvement in the AI-171 case also signals a broader shift in India’s approach to aviation safety oversight. Historically, the DGCA and AAIB have operated with minimal external scrutiny, leading to criticism that regulatory lapses often go unaddressed until a disaster occurs. The court’s insistence on periodic updates suggests a growing recognition that institutional accountability cannot be left solely to the agencies responsible for oversight. This judicial intervention could set a precedent for future aviation investigations, particularly in cases where conflicts of interest or bureaucratic inertia may impede progress.
Background and Context: India’s Aviation Safety Record Under Scrutiny
The AI-171 crash is the latest in a series of high-profile aviation incidents that have exposed vulnerabilities in India’s air safety framework. In recent years, the country has witnessed a spate of near-misses, runway incursions, and technical failures that have raised alarms among international aviation bodies. In 2023, the International Civil Aviation Organization (ICAO) downgraded India’s safety rating to “Category 2,” citing deficiencies in regulatory oversight, training standards, and enforcement mechanisms. While the rating was later upgraded following corrective measures, the episode underscored the fragility of India’s aviation safety ecosystem.
The DGCA, which oversees both regulatory enforcement and accident investigations through the AAIB, has faced repeated criticism for its dual role. Safety advocates argue that this structure creates an inherent conflict of interest, as the regulator may be reluctant to publicly acknowledge failures that could reflect poorly on its own oversight. The AAIB’s administrative subordination to the DGCA has been a particular point of contention, with critics alleging that it compromises the independence of investigations. In the case of AI-171, the Supreme Court’s intervention appears to be a direct response to these concerns, signaling a potential shift toward greater external oversight of aviation safety probes.
The crash also occurs at a time when India’s aviation sector is undergoing rapid transformation. The government’s push to expand regional connectivity through initiatives like the UDAN (Ude Desh ka Aam Nagrik) scheme has led to a proliferation of new airlines and routes, often operating with older aircraft and limited infrastructure. While these efforts have democratized air travel, they have also stretched the DGCA’s capacity to monitor compliance with safety standards. In 2024, the regulator faced criticism for its handling of a series of technical snags reported by airlines, including mid-air engine failures and pressurization issues, which were often attributed to “minor” defects rather than systemic flaws.
Competing Claims and Uncertainty: What We Still Don’t Know
Despite the Centre’s assurance that the investigation is nearing completion, several critical questions remain unanswered. Chief among them is whether the AAIB has identified a probable cause for the crash. The affidavit does not specify whether the agency has ruled out—or confirmed—any of the leading theories, such as:
– Mechanical failure: Given the aircraft’s age and maintenance history, some experts have speculated that a catastrophic engine or structural failure could have triggered the crash. However, without access to the AAIB’s preliminary findings, this remains conjecture.
– Human error: Pilot disorientation, miscommunication with air traffic control, or procedural lapses during takeoff are common factors in aviation accidents. The AAIB’s analysis of cockpit voice recordings and flight data could shed light on whether crew actions played a role.
– Software or systems malfunction: Modern aircraft rely heavily on automated systems, and glitches in avionics or flight control software have been implicated in past crashes. The AAIB’s collaboration with the aircraft manufacturer suggests that this line of inquiry is being pursued, but details remain undisclosed.
– Maintenance lapses: India’s aviation sector has faced scrutiny over maintenance practices, particularly among budget carriers. If the investigation uncovers evidence of deferred maintenance or substandard repairs, it could trigger broader reforms in regulatory oversight.
Another area of uncertainty is the extent of the manufacturer’s involvement in the investigation. The Centre’s affidavit confirms that the AAIB has worked with the aircraft’s manufacturer, but it does not clarify whether the company provided unrestricted access to proprietary data, such as flight control software logs or design specifications. In past investigations, manufacturers have been accused of withholding critical information to protect their commercial interests, a practice that has drawn criticism from safety advocates. If the AAIB’s final report relies heavily on data provided by the manufacturer, it could raise questions about the independence of its conclusions.
The role of air traffic control (ATC) also remains unclear. While the affidavit does not mention ATC communications, such records are typically a key component of crash investigations. If the probe reveals that ATC instructions or miscommunications contributed to the crash, it could prompt reforms in India’s air traffic management systems, which have been criticized for outdated technology and understaffing.
What to Watch Next: Key Developments in the Coming Weeks
As the AAIB prepares to release its draft final report by October, several developments could shape the investigation’s trajectory and its broader implications for India’s aviation sector:
1. The Supreme Court’s Response to the Affidavit
The court is expected to review the Centre’s submission in the coming weeks and may issue further directives to ensure transparency and accountability. If the judges deem the progress report insufficient, they could order the formation of an independent oversight committee or demand more frequent updates from the AAIB. The court’s response will signal whether it intends to maintain a hands-on role in the investigation or defer to the agency’s expertise.
2. Release of the Draft Final Report
The AAIB’s draft report, expected by the end of October, will be the first comprehensive account of the crash’s probable cause. Aviation experts will scrutinize the document for evidence of systemic failures, regulatory lapses, or manufacturer defects. If the report identifies a clear cause—such as a design flaw or maintenance failure—it could trigger immediate corrective actions, including grounding certain aircraft models or revising safety protocols. Conversely, if the report is inconclusive or attributes the crash to a combination of factors, it may fuel further debate over the adequacy of India’s investigative processes.
3. Reactions from Victim Families and Advocacy Groups
The families of the victims have been vocal in their demands for transparency and justice. Their response to the draft report will be a critical barometer of public trust in the investigation. If the families perceive the report as incomplete or biased, they may escalate their legal challenges, potentially seeking compensation or further judicial oversight. Advocacy groups, such as the Aviation Safety Network and the Flight Safety Foundation, are also likely to weigh in, offering independent analyses of the AAIB’s findings.
4. Regulatory and Industry Reforms
Depending on the report’s conclusions, the DGCA may be compelled to implement sweeping reforms in pilot training, maintenance practices, or air traffic control procedures. If the crash is attributed to a systemic issue—such as inadequate oversight of maintenance providers—the regulator could face pressure to overhaul its enforcement mechanisms. The government may also accelerate plans to modernize India’s aviation infrastructure, including the adoption of advanced air traffic management systems and real-time monitoring technologies.
5. International Implications
The AI-171 investigation has drawn attention from global aviation bodies, including the ICAO
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Story synopsis gathered from: Hindustan Times – India News — source.
