Banks remain reluctant to infuse an emergency funding of Rs. 1500 crore into Jet Airways, which the teetering airline has sought to stay afloat as it faces a severe cash shortage. The airline was able to fly only five aircraft on Tuesday, the bare minimum required according to the rules of the Directorate General of Civil Aviation and conditions of the Air Operating Permit (AOP), the document that permits a commercial airline to operate across the country. The pilots of the airline told NDTV that the situation is extremely grave and the airline could be grounded any moment in the absence of funds.