ONY WHEREOF WE HAVE SET OUR HAND AND SEAL THIS 30th DAY OF December 1999 NAME (S) OF SELLER (TOE OR MINTED) SIGNATURE (S) (IN DOC) (IF memo, FOR CO-OWNEASIID. AU. MUST SIGN.) TITLE (TYPED OR PRINTED) Raytheon Travel Air Company .....--•-• Terry L. Carr tr 4._ Sr. Contracts Manager ACKINOWLEDGEMENT