<h1>Air India flight returns to Chicago after lavatories malfunction due to improper waste disposal on board.</h1> An Air India flight from Chicago to Delhi returned to Chicago due to unserviceable lavatories caused by flushed polythene bags, rags, and clothes obstructing the plumbing. The incident occurred on March 6, with eight out of twelve lavatories becoming unusable, prompting the decision to return for passenger comfort and safety, as night operations were restricted at European airports. Air India emphasized the importance of using lavatories appropriately, noting prior incidents of improper waste disposal. The airline initially cited a technical issue for the diversion and urged passengers to adhere to proper lavatory use.