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Boeing Testing Finds No Fault in 787 Fuel-Switch Locking Mechanism

The finding reduces immediate concern over the pilot-reported switch fault while a full inspection of the thrust control module and the AAIB crash probe continue.

Overview

  • An Air India pilot logged a possible defect on February 2 after a London–Bengaluru 787 flight and the airline grounded that aircraft for checks and alerted the regulator.
  • The Directorate General of Civil Aviation ordered OEM-level testing at Boeing’s Seattle facility as a continued airworthiness measure and Boeing examined the fuel control switch detents.
  • Boeing’s detailed examination found no abnormality in the fuel control switch locking mechanism, according to the minister’s written reply to Parliament on July 30.
  • Further inspection of the complete Thrust Control Module at the OEM facility is still under way and could identify issues that a standalone switch check would miss.
  • The Aircraft Accident Investigation Bureau’s major-accident probe of the June 12, 2025 AI-171 crash remains open with no fixed publication date for the final report and regulators will review any draft findings.