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Air India's B787 Plane Grounded Due to Engine Switch Fault

A malfunction in the fuel control switch raises safety concerns after the previous crash incident involving Air India's Boeing 787.
PT
pocketias team
••5 mins read
Air India grounds Boeing 787 after left engine fuel control switch malfunction
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1. Immediate Incident: Fuel Control Switch Malfunction on Boeing 787

An Air India Boeing 787 operating the London–Bengaluru sector reported abnormal behaviour of the left engine fuel control switch during engine start. The switch failed to remain locked in the “Run” position and moved towards “Cutoff” on two attempts, prompting grounding of the aircraft.

The incident is significant because the fuel control switch is a critical engine control that directly regulates fuel flow. Any unintended movement towards “Cutoff” can interrupt fuel supply and potentially lead to engine shutdown under specific conditions.

Air India responded by grounding the aircraft, informing the Directorate General of Civil Aviation (DGCA), and involving Boeing, the original equipment manufacturer. This reflects established safety protocols and regulatory reporting norms.

If such incidents are not treated with urgency, even isolated malfunctions can escalate into systemic safety risks, undermining confidence in aviation safety oversight.

Prompt grounding and regulatory intimation demonstrate the precautionary principle in aviation governance. Ignoring early warning signs can allow latent technical faults to manifest during critical flight phases.

Key facts:

  • Aircraft type: Boeing 787 / 787-9
  • Route: London–Bengaluru
  • Component involved: Left engine fuel control switch

2. Linkages with the Air India Flight AI171 Crash Investigation

Fuel control switches were central to the Air India Flight AI171 crash of June 12 last year in Ahmedabad, which resulted in 241 fatalities out of 242 people on board. The preliminary report by the Aircraft Accident Investigation Bureau (AAIB), released in July 2025, highlighted this aspect.

According to the report, both fuel control switches were moved to “Cutoff” in quick succession. Although they were returned to “Run” about 10 seconds later, the engines had already flamed out, leading to loss of thrust.

The report did not conclusively attribute responsibility to either pilot and did not rule out technical faults. Aviation medicine and psychology experts have been involved, indicating a multi-dimensional investigation.

If investigation findings are not integrated into preventive checks, past accidents risk repeating themselves through unresolved technical or human–machine interface issues.

Accident investigations serve a preventive governance function. Failure to translate findings into operational safeguards weakens the learning loop essential for aviation safety.

Evidence from investigation:

  • AAIB preliminary report: July 2025
  • Time gap before switch reset: ~10 seconds
  • Fatalities: 241 of 242

3. Regulatory Oversight and the Role of DGCA

Following the AI171 crash, the DGCA had directed checks of fuel control switches across Air India’s Boeing 787 fleet. Air India stated that these checks found no issues at the time.

The recurrence of a reported switch malfunction after these precautionary checks raises questions about the depth, scope, and effectiveness of regulatory inspections. It also highlights the challenge of detecting intermittent or condition-specific faults.

Non-governmental actors, such as the Safety Matters Foundation, have called for transparent disclosure of inspection findings and an urgent regulatory review to determine whether the incident is isolated or fleet-wide.

If regulatory oversight does not adapt to emerging evidence, gaps between formal compliance and real-world safety conditions may persist.

Effective regulation requires continuous reassessment, not one-time compliance. Ignoring post-check incidents can erode trust in aviation safety institutions.

Governance concern:

  • Possibility of fleet-wide issue
  • Demand for airworthiness directive if systemic risk is found

4. Manufacturer Responsibility and Technical Scrutiny

Boeing stated that it is in contact with Air India and is supporting the review of the reported issue. Manufacturer involvement is critical when defects relate to core engine or electronic control systems.

Pilots’ associations have pointed to possible electrical malfunctions linked to the Thrust Control Management Apparatus. Concerns have also been raised about water seepage into the main electronic bay of Boeing 787-8 aircraft, potentially causing electrical faults.

Past incidents have been cited, including a February 17, 2019, All Nippon Airways Boeing 787-8 incident in Osaka where both engines lost thrust during landing, and a June 12, 2025, Air India Vienna–Delhi flight grounded due to flooding in the electronic bay.

If manufacturer-level design or systemic issues are not addressed, airline-level checks alone may be insufficient to ensure safety.

Aircraft safety is a shared responsibility between operators, regulators, and manufacturers. Weak coordination can leave structural vulnerabilities unaddressed.

Comparative references:

  • ANA Boeing 787-8 incident: 2019, Osaka
  • Air India Vienna–Delhi grounding: June 12, 2025

5. Role of Pilots’ Bodies and Civil Society in Aviation Safety

The Federation of Indian Pilots and the Safety Matters Foundation have consistently flagged concerns about fuel control switches and electrical systems in Boeing 787 aircraft. Their interventions highlight the role of professional bodies in safety governance.

Such organisations act as early warning mechanisms by aggregating frontline operational experience that may not be immediately visible in formal audits.

However, repeated warnings without decisive regulatory action can create friction between stakeholders and delay corrective measures.

Inclusive safety governance values inputs from pilots and civil society. Ignoring these voices risks normalising preventable hazards.

“We have been insisting that all Boeing 787 aircraft be grounded and checked for the electrical systems.” — C. S. Randhawa, Federation of Indian Pilots

Conclusion

The reported fuel control switch malfunction on an Air India Boeing 787 underscores unresolved safety concerns in the backdrop of an ongoing fatal crash investigation. For long-term aviation safety, regulatory vigilance, transparent investigations, manufacturer accountability, and incorporation of pilot feedback are essential. Strengthening these linkages will reinforce public confidence and uphold India’s civil aviation safety framework.

Quick Q&A

Everything you need to know

The reported issue involved the left engine fuel control switch, which failed to remain locked in the “Run” position during engine start on two attempts and moved toward the “Cutoff” position.

  • Significance: The fuel control switch is a critical engine component that regulates fuel flow. When in the 'Run' position, it allows normal fuel supply; in 'Cutoff', it shuts off fuel, which could lead to engine flameout if not corrected promptly.
  • Historical context: This is particularly alarming because a similar malfunction contributed to the Air India Flight AI171 crash in Ahmedabad in June 2025, which resulted in 241 fatalities. In that incident, both fuel control switches moved to 'Cutoff' in quick succession, leading to engine shutdown despite corrective actions.
  • Implication for aviation safety: The recurrence of such a defect raises questions about the robustness of pre-flight inspections, fleet-wide preventive measures, and the reliability of the Boeing 787 fuel control system. It emphasizes the need for rigorous technical investigation and regulatory oversight.

The repeated reports of fuel control switch malfunctions on Boeing 787 aircraft have significant implications for aviation safety in India.

  • Passenger safety: Any inadvertent engine shutdown during flight poses a direct threat to passengers and crew. Even on the ground, multiple start attempts failing can compromise operational safety.
  • Regulatory implications: The Directorate General of Civil Aviation (DGCA) needs to ensure that all preventive checks are thorough and effective. Past incidents, such as Flight AI171 in Ahmedabad and other international cases, indicate a potential systemic issue.
  • Operational trust and confidence: Crew members, passengers, and airline stakeholders rely on aircraft systems’ integrity. Recurrent technical anomalies can undermine confidence in airline operations and aircraft certification standards, emphasizing the need for transparency and urgent corrective measures.

Air India immediately grounded the affected Boeing 787 aircraft and involved the original equipment manufacturer (Boeing) to examine the issue.

  • Coordination with regulators: The incident was reported to the DGCA, highlighting compliance with statutory safety reporting obligations.
  • Technical review: Boeing has been engaged to support the review of the fuel control switch malfunction, ensuring that engineering analysis identifies whether the issue is isolated or indicative of a fleet-wide defect.
  • Precautionary measures: Air India had already conducted checks of all 787 fuel control switches following previous directives. Nonetheless, this incident underscores the importance of rigorous inspection protocols, crew reporting procedures, and proactive communication to regulators and stakeholders to prevent recurrence.
Outcome: Such immediate action reflects the airline’s prioritization of safety and aligns with global aviation best practices, emphasizing early detection and mitigation of critical system malfunctions.

The fuel control switch malfunction may be linked to electrical, mechanical, and system design issues inherent in the aircraft.

  • Electrical system vulnerabilities: Experts have noted that Boeing 787-8 aircraft can experience water seepage into the main electronic bay, which could trigger automatic movement of the fuel control switches and other electrical malfunctions.
  • Thrust Control Management Apparatus (TCMA) faults: During Flight AI171, pilots reported unexpected switch movement, which may be associated with TCMA electrical anomalies affecting fuel regulation. Similar scenarios have been reported in international flights, such as the All Nippon Airways 787 incident in Osaka, Japan (2019).
  • Human-machine interface considerations: Misinterpretation of cockpit alerts, switch feedback, or delayed corrective response can compound the technical risk. Aviation medicine and psychology experts have been involved in prior investigations to analyze such interactions.
Conclusion: While investigations are ongoing, the incident highlights the need for both technical rectifications and crew training to manage critical system malfunctions.

Regulatory oversight by bodies like DGCA is crucial in maintaining safety standards in civil aviation.

  • Preventive inspections: Regular technical audits and compliance checks are essential to detect anomalies before they manifest into in-flight emergencies. The recurrence of fuel control switch malfunctions suggests potential gaps in inspection protocols.
  • Transparency and communication: Clear reporting mechanisms between airlines, OEMs, and regulators are vital. Discrepancies between Air India’s fleet checks and the subsequent incident raise questions about the thoroughness of inspections and information flow.
  • Policy implications: Fleet-wide safety directives, airworthiness certifications, and mandatory corrective measures should be promptly issued when recurring faults are identified. Learning from international cases, such as ANA’s engine shutdown events, can enhance domestic oversight.
Way forward: A proactive regulatory framework that integrates technical audits, incident reporting, and independent verification can prevent repeat occurrences, ensuring passenger safety and sustaining confidence in aviation operations.

Several past incidents involving Boeing 787 aircraft demonstrate the criticality of fuel control and electrical system integrity.

  • Air India Flight AI171 (June 2025): Both fuel control switches moved to 'Cutoff,' causing engine flameout and resulting in 241 fatalities. The incident triggered an AAIB investigation highlighting possible electrical malfunctions and human factors in switch operation.
  • ANA Flight, Osaka, Japan (Feb 2019): A Boeing 787-8 experienced sudden engine thrust loss during landing, highlighting global concerns regarding fuel and electrical system reliability in this aircraft model.
  • Vienna-Delhi Air India Flight (June 2025): Flooding in the electronic bay forced groundings, demonstrating how water ingress can affect electrical and engine systems.
Implication: These examples underline the importance of preventive maintenance, fleet-wide inspections, and the need for both technical and human factor interventions to safeguard aviation operations.

The AI132 incident on the London-Bengaluru route highlights critical aspects of aviation risk management.

  • Proactive detection: The left engine fuel control switch failed to remain in the 'Run' position during start, detected by the crew before takeoff. Immediate grounding of the aircraft prevented a potential in-flight emergency.
  • Stakeholder coordination: Air India promptly involved Boeing, informed the DGCA, and followed internal safety protocols. This multi-layered response reflects adherence to international safety standards.
  • Lessons for risk management: The incident illustrates the need for continuous monitoring of fleet-wide technical issues, transparent reporting of anomalies, and incorporation of historical data (AI171 crash, ANA incidents) in preventive strategies. Additionally, it underscores the importance of training pilots to handle sudden technical malfunctions effectively.
Conclusion: AI132 demonstrates the effectiveness of early detection and structured risk management in preventing disasters, while emphasizing the systemic need for regulatory oversight, fleet audits, and technical rectifications for critical aircraft systems.

Attribution

Original content sources and authors

DP
Deepak Patel
BS
Business Standard
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