NEW DELHI: Concerned at long queues at international arrivals of passengers waiting to get screened for coronavirus , the Directorate General of Civil Aviation (DGCA) has warned airlines of strict action over not carrying required quantity of self-declaration forms to be given to flyers before landing.The Airport Health Organization has reportedly said long queues of passengers at screening counters is partly due to flyers lining up without filling the form, that essentially gives details like their recent travel history and contact details in India, and then doing so there.The DGCA on Tuesday wrote to airlines: "...Some airlines are not ensuring availability of self-declaration form(s) leading to long queues at arrival points. This has been viewed very seriously by this office. All airlines operating on international sector, therefore, are advised again to ensure availability of sufficient number of self-declaration form(s) as specified by Ministry of Health and Family Welfare..."These forms, which have to be filled in duplicate for being given at health screening and immigration each, are required to be distributed when a flight is preparing to land in India so that passengers can fill them up before disembarkation.The failure to do so has led to long queues and waiting times at screening counters, sparking fears that the chokepoints could become a place for infection to spread. "Some international airlines are not carrying forms in required numbers. If they do not make amends, we can stop their flights to India," warned a senior official.The circular also states, "All airlines shall also ensure in-flight announcement in flights coming to India in this regard. All airlines shall strictly adhere to above instructions and intimate action taken in the matter."