READ THIS LETTER FIRST - STC PURCHASE AGREEMENT November 27, 2000 Jet Aviation Palm Beach International Airport West Palm Beach, FL 33406 RE: STC ST00298W1 Data Package for a TCAS ll CAS-67 w/7.0 softwre in a Gutfstream II Series Aircraft. Reference: O3177 Dear Ms. Snowball: This letter authorizes Jet Aviation to