State-owned Air India today said the aviation jet fuel payment issues are being sorted out and will be resolved soon with the oil PSUs, which have warned the carrier of snapping supplies at six key airports if it does not make monthly lump sum payment by Friday.<br />'' <br />'' The airline in statement also assured its customers of smooth operations, saying it has taken all the measures in the eventuality of the two sides failing to reach an understanding on the issue.<br />'' <br />'' In a letter sent to Air India last Thursday, the three government-owned oil marketing firms — Indian Oil Corporation Ltd (IOCL), Bharat Petroleum Corporation Ltd (BPCL) and Hindustan Petroleum Corporation Ltd (HPCL) — said the outstanding had not come down considerably in the absence of the committed monthly lump sum payment.<br />'' <br />'' <br />