NASA/Langley Research Center, Mail Stop 144, Industry Assistance Office, Hampton, VA 23681-0001

A -- SPACE TECHNOLOGY RESEARCH AND DEVELOPMENT SOL 1-047-CG.0017 POC Richard J. Siebels, Contracting Officer, Phone (757)-864-2418, Fax (757) 864-6131, Email R.J.SIEBELS@larc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LaRC/date.html#1-047-CG.0017. E-MAIL: Richard J. Siebels, R.J.SIEBELS@larc.nasa.gov. This is modification number 4 to the synopsis entitled Space Technology Research and Development which was posted on December 3, 1998. You are notified that the following changes are made: The release date for the draft Request for Proposal (DRFP) is changed from April 15, 1999 to June 30, 1999. Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The WWW address or URL of the NASA/LaRC Business Opportunities home page is http://procurement.nasa.gov/EPS/LaRC/class.html. Offerors are responsible for monitoring this site for the release of the solicitation and any amendments. Potential offerors are responsible for downloading their own copy of the solicitation and amendments (if any). Posted 06/04/99 (D-SN339243). (0155)

Loren Data Corp. http://www.ld.com (SYN# 0004 19990608\A-0004.SOL)