SpiceJet chairman Ajay Singh said Wednesday any potential bidder of Jet Airways must have to contend with a viability gap funding of INR250b, out of which INR110b needed to paid up front. This casts a shadow on the grounded carrier’s ability to take to the skies again even as the civil aviation ministry sought to protect Jet’s much coveted slots at the premier airports by limiting advance booking on these slots to just 3 months. “The slots are being allotted on a temporary basis for a 3 month period and they should not resort to advance booking beyond that period,” a civil aviation ministry official said. The slots allotted temporarily can be taken back when Jet is able to fly. Jet Airways had 280 slots at the Mumbai airport and 180 in Delhi. <br/>