Air India says teams found polythene bags, rags, and clothes that had been flushed down and stuck in the plumbing. Eight of the 12 lavatories in the aircraft became unserviceable, causing discomfort to all on board. A Mumbai-New York flight of Air India, with 322 people on board, returned from Azerbaijan skies eight hours after take-off on Monday due to a bomb threat, which was later found to be a hoax. Air India urges passengers to use lavatories only for the purposes that they are meant for. The flight had crossed over Greenland and circled back to Chicago’s O’Hare International Airport after issues with the toilets were raised by travellers. The aircraft was overflying the Atlantic, leaving points in Europe as potential cities to divert to. However, due to restrictions on night operations at most of the European airports, it was decided to divert back to the United States, the airline said. The plane landed safely in Chicago and all passengers were provided immediate assistance, including hotel accommodation and alternative flight options to continue their journey to Delhi.