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

B -- STUDY TO DETERMINE WHETHER INSTABILITY MECHANISMS ASSOCIATED WITH COHERENT STRUCTURES PLAY A DOMINANT ROLE IN CREATING NOISE EMANATING FROM A FLAP SIDE-EDGE AND SLAT FLOW FIELD SOL 1-074-DFM.1255 DUE 042098 POC Artistine Lethcoe-Reid, Purchasing Agent, Phone (757)-864-2432, Fax (757) 864-9774, Email A.LETHCOE-REID@larc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LaRC/date.html#1-074-DFM.1255. E-MAIL: Artistine Lethcoe-Reid, A.LETHCOE-REID@larc.nasa.gov. This is a modification to the synopsis entitled Study to Determine Whether Instability Mechanisms Associated with Coherent Structures Play a Dominant Role in Creating Noise Emanating from a Flap Side-Edge and Slat Flow Field which was posted on April 10, 1998. You are notified that the paragraph stating that NASA/LaRC intends to purchase the items from Professor Philip Morris should be amended to read as follows: NASA LaRC intends to purchase the items from Professor Philip Morris, the only source for, and internationally recognized expert in, noise generation due to instability modes. (0097)

Loren Data Corp. http://www.ld.com (SYN# 0018 19980409\B-0003.SOL)