Air India has asked its cabin crew to wear minimal jewellery to avoid delays at security checks and not to visit duty-free shops after completing the immigration process as part of the Tatas-owned airline's efforts to improve on-time performance.

Since it took over loss-making Air India on January 27, Tatas have been working on ways to improve the overall performance of the carrier. The cabin crew must also adhere to the uniform regulations and wear minimum jewellery to avoid any delays at customs and security checks, Air India officiating executive director for Inflight Services, Vasudha Chandna said in a communication to cabin crew.