Air India Boeing 787 Suddenly Fell Over A Defective Fuel Control Switch And Then Slipped To Cut-Off

On 2 February 2026 an Air India Boeing 787-8 (registration VT-ANX) was grounded after a pilot defect report indicated the left Fuel Control Switch (FCS) slipped from the RUN position to CUTOFF when nudged slightly and did not lock positively in its selected position. The Directorate General of Civil Aviation (DGCA) supervised inspections and functional testing with the airline and has ordered further inspection at the original equipment manufacturer (OEM) facility in the United States.

Flight and initial defect report
The affected aircraft completed flight sector AIC-132 from London Heathrow (EGLL) to Bengaluru (VOBL) before maintenance action was initiated. Following disembarkation, a pilot entry in the Pilot Defect Report documented that the left FCS could be moved from RUN to CUTOFF with a slight push and that the switch did not exhibit positive locking in the selected position. Based on that entry the aircraft was grounded pending investigation and remedial action.

DGCA and airline response
The DGCA said its officers were present when Air India carried out inspections and OEM-prescribed functional tests of the fuel control switches. The airline and DGCA personnel reported that during those tests the FCS “was mechanically functioning as designed” and was considered serviceable. Despite that initial finding, the DGCA has directed that the involved FCS be sent to the OEM facility in the United States for further inspection in the presence of DGCA representatives, as part of continued airworthiness oversight.

Technical issue described

Fuel Control Switch (FCS) function

• Purpose: The FCS on the Boeing 787 controls fuel flow to the respective engine(s) and must be robust against inadvertent movement.
• Reported symptom: The left FCS reportedly slipped from RUN to CUTOFF with slight pressure and lacked a positive lock in the selected position.

Aircraft type and registration

• Model: Boeing 787-8 Dreamliner
• Registration: VT-ANX
• Flight sector: AIC-132 (EGLL–VOBL) on 2 February 2026

Inspection, testing and findings

• Airline action: Air India performed inspections and functional testing of the left and other fuel control switches per OEM procedures, with DGCA officers present.
• DGCA statement: The switch “was mechanically functioning as designed and considered the unit serviceable” after those checks.
• Further action: Despite the serviceability determination, DGCA ordered the unit be inspected at the OEM facility in the United States to ensure continued airworthiness and to verify any latent defects or manufacturing/service issues not detectable during routine functional testing.

Context: Safety oversight and international coordination
The DGCA’s involvement during on‑aircraft testing and its decision to send the component to the OEM underscore regulatory prudence and the need for specialist facilities for root-cause analysis. Sending components to OEM facilities is standard when initial checks do not fully explain a reported anomaly or when deeper laboratory or bench testing (material analysis, wear measurement, mechanical endurance testing) is required.

Relation to the 2025 Air India 787 crash
Although the defect report and grounding concern a different aircraft and a technical issue detected in February 2026, the incident comes against the backdrop of the June 2025 crash of Air India flight AI-171, a Boeing 787-8, which killed 260 people. That crash has prompted heightened public, regulatory and investigative scrutiny of Air India’s 787 operations and of the type generally. The DGCA has previously said the investigation into the June 2025 accident was in its final stage, and the ministry has emphasized transparency and international coordination in that probe.

Authorities’ public statements
Union Civil Aviation Minister Ram Mohan Naidu Kinjarapu has said the AI-171 crash investigation is in its final stages and reiterated that the probe is being conducted transparently and is open to international scrutiny. The DGCA has not linked the February 2026 FCS report to the 2025 crash; instead, it has treated the FCS report as an independent maintenance and continued-airworthiness matter requiring confirmation at the OEM.

Safety implications and likely follow-up

• Short-term: The individual aircraft (VT-ANX) remained grounded until inspectors could complete tests and until the OEM examination clarified whether the FCS had any latent defect. Grounding a single aircraft after a pilot report is a precautionary maintenance action consistent with aviation safety practices.
• Medium-term: The OEM inspection will determine whether the switch has a manufacturing defect, wear-related degradation, installation/rigging issues, or if the report reflected a transient condition. If the OEM identifies a design or manufacturing problem, the DGCA may issue airworthiness directives (ADs) or mandatory inspections for the fleet.
• Operational impact: A single grounded airframe typically has limited effect on overall airline schedules; however, broader inspection mandates could affect multiple aircraft if a systemic fault is discovered.

Expert and industry perspective
Aviation safety specialists note that pilot defect reports are an essential part of the safety feedback loop and that many anomalies discovered in service are resolved through component testing and corrective maintenance. Mechanical components that appear serviceable on bench or functional testing can still require in‑depth analysis (metallurgical, microstructural, or fatigue testing) to find intermittent or latent problems. OEM facilities often possess specialized equipment and historical part data required for definitive conclusions.

What to watch next

• DGCA release: The regulator’s report on the OEM inspection of the FCS and any subsequent directives or safety recommendations.
• OEM findings: Whether the OEM confirms the switch functioned within tolerance or identifies defects requiring fleet action.
• Broader inspections: Whether the DGCA or other regulators require inspections of similar switches across the Indian-registered 787 fleet or globally, depending on OEM findings.

Background: Fuel control switches and continued airworthiness
Fuel control switches are critical engine control hardware. Continued-airworthiness oversight involves periodic inspections, technical evaluations after unusual reports, and escalation to manufacturers when necessary. Regulators commonly act conservatively—grounding an aircraft and sending suspect components for specialized analysis—to ensure no systemic risk exists to flight safety.

Conclusion
Air India grounded one Boeing 787-8 after a pilot reported a left fuel control switch slipping from RUN to CUTOFF and not locking positively. Airline and DGCA on‑aircraft tests deemed the unit mechanically serviceable, but the DGCA has ordered OEM-level inspection in the United States to verify the component’s condition and eliminate any latent risks. The matter will be monitored closely, particularly in light of ongoing attention to the type following the June 2025 AI-171 crash.

Image Credit:Air India