Federal Aviation Administration, 800 Independence Avenue, S.W., Washington, D.C. 20591, ASU-320

D -- LOW LEVEL WIND SHEAR ALERT SYSTEM (LLWAS) SUSTAINMENT, CONSOLIDATION AND REFURBISHMENT OF CURRENT SYSTEMS DUE 043096 POC Contracting Officer, Lou Hammond 202/267-9464 FAA is preparing for the operational sustainment of fielded Low Level Wind Shear Alert Systems (LLWASs). Fielded systems include Climatronics PC-based LLWAS-2's, and LORAL Data Systems PDP-based LLWAS-2's and LLWAS-NE's. Each system is composed of from 6 to 32 anemometers, processor system, memory and backup recorders, power control, maintenance terminal, antenna, and displays. For the ''sustainment effort'', FAA plans to procure at least fifty-one (51) LLWASs which maximize the use of commercial-off-the-shelf (COTS) technology. Current fielded LLWASs will be replaced with new COTS computers/processors, anemometers, displays, site and depot spares, etc. The ultimate goal is to unify the FAA sensor/computer logistic supply support/ maintenance effort for LLWAS. LLWAS functional requirements are to: operate within FAA National Airspace System (NAS) with no impact to existing NAS systems.; provide real-time detection and location of hazardous wind shears, microbursts and wind gusts, around and in the vicinity of airport runways; collect wind data at remote stations and transmit to Master Station Controller; analyze wind data using Government furnished algorithms based on Temporal Shear, Divergence and Network Mean methods; determine if any inherent elements (stations, edges, or triangles) are in an alarm status; process alarm elements with respect to runways to determine location and magnitude of hazardous wind shear; generate runway alert for persistent wind shear conditions; display all runway alerts, runway oriented winds, gusts, airport center wind (a.k.a., CFW or Centerfield wind), and system status to local and approach controllers and communicate same to other FAA systems (as required); provide local Maintenance Data Terminal for LLWAS Remote Monitoring Subsystem continuous system status display; provide remote system status control via the FAA Maintenance Processing Subsystem (MPS) interface; archive all pertinent information including but not limited to wind data, alarms, operator actions, Controller displays and system conditions. FAA LLWAS operational requirements are to provide: low-level hazardous wind shear and microburst detection; measurement and location of the level of the hazard; airport center wind and runway oriented wind measurements; and a clear direct transmission of collected wind information/measurements to the local and approach air traffic controllers for provision to the aviation user. All responding sources should include the following (as appropriate): a) current company capabilities in system, software and hardware design, development and integration, b) readily available COTS technologies, c) wind related Government contracts, including software development standards adherence, d) sensor and system design specifications/standards, mean-time-between-failures, and mean-time-to-repair (if available), and e) available system documentation format, standards, tools and titles. Interested industry representatives shall notify the Contracting Officer, of their capabilities, by April 5, 1996. An RFP is planned for SEP/OCT 1996. (0087)

Loren Data Corp. http://www.ld.com (SYN# 0031 19960328\D-0006.SOL)