Whalesbook
Indian aviation authorities are intensifying their examination of a specific component in Boeing's 787 Dreamliner after an Air India aircraft was taken out of service due to a suspected fuel control switch malfunction.
Fuel Switch Under Investigation
An Air India Boeing 787-8 Dreamliner, registered VT-ANX, was grounded on February 2, 2026. A pilot reported that the left fuel control switch could easily slip from the 'RUN' position to 'CUTOFF' with light pressure and would not stay in its set position. While Air India's initial inspections, following Boeing's guidance and with the Directorate General of Civil Aviation (DGCA) observing, found the switch to be mechanically functional and serviceable, the DGCA has ordered further testing. The switch will be sent to the Original Equipment Manufacturer's (OEM) facility in the U.S. for laboratory analysis. DGCA officials plan to visit Boeing's Seattle facility in June to observe these tests. This heightened scrutiny is particularly relevant given the ongoing investigation into a fatal Air India Boeing 787-8 crash in June 2025, where preliminary findings suggested both fuel switches were turned off shortly after takeoff, leading to engine failure.
Link to Past Tragedy and Industry Watch
The current focus on the 787's fuel control switches is directly tied to the tragic crash of Air India flight AI-171 near Ahmedabad in June 2025, which resulted in 260 fatalities. Initial reports from that investigation indicated that fuel supply to the engines was cut off soon after takeoff, with pilot conversations captured on recordings questioning the fuel cutoff. Despite Boeing and the FAA stating the switch design is safe and not requiring an airworthiness directive, this event has raised concerns about the 787's fuel system reliability. Previous reports from 2019 and 2020 also noted other fuel system issues on the 787, such as fuel leaks from improperly installed connectors. Competitors are closely monitoring these developments, as any significant findings could affect Boeing's standing and market position. While the FAA has not mandated further action on these switches, the DGCA's proactive approach highlights a commitment to thoroughness. It is noted that while the Boeing 737 has experienced issues with incorrect installation of fuel control switches, the 787 uses a different part, and there were no widespread reports of similar malfunctions on the 787 fleet before the AI-171 crash. Globally, over 1,100 Boeing 787s are in operation, with millions of flight hours logged without documented fuel switch malfunctions causing fatal accidents or engine shutdowns on this model prior to the AI-171 incident.
Regulatory Concerns and Manufacturing Questions
The possibility of critical flight systems failing mechanically remains a significant worry. The DGCA's insistence on overseeing the U.S. testing, even after initial assessments found the component serviceable, indicates ongoing regulatory unease, fueled by the memory of the fatal AI-171 crash. Boeing has informed Air India that the switch is "serviceable," but the decision for further lab testing signals a desire for absolute certainty. The exact cause of the AI-171 crash remains unclear, with ambiguity surrounding whether the switch activation was intentional, accidental, or a technical fault, leaving room for theories of pilot error or mechanical failure. The Federation of Indian Pilots has also suggested that an electrical failure, rather than pilot action, might have been the cause of the crash. Furthermore, past quality control issues at Boeing, including problems with fuel system components and fasteners on the 787, contribute to underlying concerns about manufacturing integrity. The lack of definitive findings on the AI-171 crash and conflicting pilot statements fuel skepticism that a deeper, systemic issue might affect the 787's fuel control system, possibly due to manufacturing or design flaws.
Next Steps and Oversight
Upcoming laboratory tests in Seattle are expected to provide conclusive findings on the integrity of the fuel control switch. These results will be vital for the Aircraft Accident Investigation Bureau's final report on the AI-171 crash, which is anticipated next month. The DGCA's diligent approach and engagement with Boeing reflect a broader trend of increased regulatory oversight in aviation, especially concerning prominent aircraft models and previous incidents. This thorough examination aims to rebuild confidence in the safety of the Boeing 787 fleet and prevent similar tragic events.