Avolar, the newly formed business aviation subsidiary of UAL Corp., reached an agreement with Airbus to market and/or manage, but not buy, up to 15 Airbus Corporate Jetliners under a program to be operated separately from Avolar’s fractional-ownership program for smaller business jets. Terms also permit Avolar customers to purchase an ACJ. The executive twinjets will be crewed by mainline United Airlines pilots. Additionally, United Services, a division of United Airlines, will provide maintenance for ACJ customers. The agreement will also allow customers to purchase an aircraft directly from Airbus and have it managed by Avolar.