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

66 -- OZONE BALLOON SENSORS SOL 1-074-CAE.5161 DUE 031299 POC Artistine Lethcoe-Reid, Purchasing Agent, Phone (757)-864-2432, Fax (757) 864-9774, Email A.LETHCOE-REID@larc.nasa.gov -- Sandra M. Glenn, Contracting Officer, Phone (757)-864-2413, Fax (757) 864-8863, Email S.M.GLENN@larc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LaRC/date.html#1-074-CAE.5161. E-MAIL: Artistine Lethcoe-Reid, A.LETHCOE-REID@larc.nasa.gov. THIS NOTICE CONSTITUTES AMENDMENT NO. 3 TO THE COMBINED SYNOPSIS/RFQ FOR Ozone Balloon Sensors, CAE.5161. Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to replace Specification (4) on page 1 of the Ozone Balloon Sensors with the following: "(4) The sampling pump efficiency standard deviations shall remain at + 2% of specified values over the ambient atmospheric pressure range of 1013-5 hPa." Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on 02/25/99. 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 reside on the 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 pageis http://procurement.nasa.gov/EPS/LaRC/class.html Posted 03/11/99 (D-SN307250). (0070)

Loren Data Corp. http://www.ld.com (SYN# 0336 19990315\66-0004.SOL)