Britain’s aviation regulator, the Civil Aviation Authority (CAA), has asked Air India to explain how its Boeing Dreamliner took off from London on February 1, 2026, despite concerns over a possibly faulty fuel switch. The plane was later grounded upon arrival in India for safety checks. In a letter dated February 3, the CAA warned Air India that it must provide a full explanation within a week. The letter also mentioned potential regulatory action against Air India and its Boeing 787 fleet if the response is incomplete. Air India responded on February 2 saying they completed a precautionary re-inspection of the fuel control switches and found no problems. The airline said it would respond to the UK regulator soon. The CAA clarified that requesting details after such an incident is a standard safety procedure. Fuel switches control the jet fuel flow to plane engines. These switches were involved in last year’s tragic Air India Dreamliner crash in Gujarat, which killed 260 people and led to stricter safety checks. The Indian civil aviation authority reported that the fuel control switch failed to stay in the ‘run’ position twice during engine start in London but was stable on the third try. The flight crew decided to continue to India where the regulator’s current tests found the switches functioning properly. The CAA has demanded a detailed account of all maintenance work done to keep the aircraft safe and support its flight release to Bengaluru. The UK regulator also seeks a full root cause analysis of the incident and a plan to prevent similar problems in Air India’s 33 Boeing 787 planes, according to an internal letter. Air India confirmed it had inspected all fuel switches in its Boeing 787 fleet and found no issues.