Created Wednesday, May 27th 2026 16:58Z, last updated Wednesday, May 27th 2026 16:58Z
An Air India Boeing 777-300, registration VT-ALL performing flight
AI-173 from Delhi (India) to San Francisco,CA (USA) with 230 people on board, was enroute at 9500 meters (FL311) over China when the crew decided to turn around and return to Delhi due to non-working TCAS, which is mandatory for the Oceanic Crossing. The aircraft landed safely back in Delhi about 8:25 hours after departure.
The airline reported a technical malfunction indicating the TCAS was not working properly, so that the airline asked the pilots to return to Delhi.
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