ATLANTA (AP) _ The airline subsidiary of United Parcel Service said Thursday it will take delivery of 13 MD-11 jumbo jets through 2004 that Boeing Co. will convert from passenger to cargo use.

The deal includes options for another 22 converted MD-11s that would be delivered to UPS Airlines from 2005 to 2010. The firm order will be delivered from 2001 through 2004, UPS said at an investors' conference in Atlanta.

The agreement is worth more than $2 billion if all 35 planes are delivered.

``It's providing us with additional lift to meet international demand,'' said Travis Spalding, a UPS Airlines spokesman. ``It won't replace anything.''

The plane, which Boeing has begun phasing out since it bought the former McDonnell-Douglas Corp., will be the fourth long-range plane in UPS's fleet. UPS Airlines, based in Louisville, Ky., also flies Boeing 747s, 767s and Airbus A300s.

The airline has 234 planes.

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