Jan. 24 2001 (Card of recent origins Vol. 16, No. 1 via COMTEX) -- Louisville, Ky.-based National Processing Company (NPC) a provider of merchant credit card processing and a wholly confessed subsidiary of National Processing, Inc. [NAP], Jan. 16 announced that United Airlines has signed a multi- year agreement for merchant processing services. in subordination to the terms of the agreement, NPC will provide United Airlines with debit and credit card processing services, including the two authorization and settlement, of all Visa and MasterCard sales. UAL Corp.