Exhibit 4.1 SUBSCRIPTION AGREEMENT Dear Subscriber: You (the "Subscriber") hereby agree to purchase, and Advanced Aerodynamics & Structures, Inc., a Delaware corporation (the "Company"), hereby agrees to issue and to sell to the Subscriber, an 8%...Subscription Agreement • November 14th, 2001 • Advanced Aerodynamics & Structures Inc/ • Aircraft • New York
Exhibit 4.2 SECURITY AGREEMENT 1. Identification. This Security Agreement (the "Agreement"), dated October 26, 2001, is entered into by and between Advanced Aerodynamics & Structures, Inc., a Delaware corporation ("Debtor"), and Barbara Mittman, as...Security Agreement • November 14th, 2001 • Advanced Aerodynamics & Structures Inc/ • Aircraft • New York
LOCKUP AGREEMENTLockup Agreement • November 14th, 2001 • Advanced Aerodynamics & Structures Inc/ • Aircraft
PUT AGREEMENT -------------Put Agreement • November 14th, 2001 • Advanced Aerodynamics & Structures Inc/ • Aircraft
