Flights have now resumed." Incidentally, oil marketing companies (OMCs) like HPCL and IOC had already put the Kalanithi Maran promoted low cost carrier on a cash and carry mode for several weeks because of the airline's worsening financial condition. In contrast to a credit line on which airlines operate, cash and carry means that the airline has to pay for fuel every time a flight takes off. "Spicejet is buying fuel from public sector OMCs on cash-and-carry model. Its ATF bill could range up to Rs 7-8 crore a day in Delhi airport in a day," an oil ministry official said. Spicejet has total liabilities of over Rs 2,000 crores to vendors, tax authorities and service providers, of which it needs to clear dues of Rs 1,400 crore immediately to continue operations, a top civil aviation ministry official said on Monday after day long meetings with the company management to find a lifeline.