LINKS TO OTHER SITES ASSOCIATED WITH ARN PROGRAMS

                      Aviation System Capacity (Terminal Area Productivity)                   gobut.jpg (1473 bytes)

SUMMARY: The Terminal Area Productivity (TAP) program will increase the capacity of existing major US airports that experience delays in non-visual, or instrument meteorological conditions. TAP will increase capacity and reduce delays by reducing spacing requirements between aircraft approaching an airport and by expediting ground operations while meeting all FAA safety guidelines. In the United States, over 300,000 flights annually experience delays that exceed 15 minutes. More than 60 percent of these are due to the conduct of operations in non-visual or instrument meteorological conditions.

                          Secondary Surveillance Product Team (AND-450)                      gobut.jpg (1473 bytes)
                                                          Products

Precision Runway Monitor (PRM)
SUMMARY: PRM will provide the capability to conduct simultaneous independent indtrument flight rules (IFR) approaches to parallel runways spaced less than 4300 feet apart, thus increasing airport throughput, reducing delays, and providing fuel savings. Based on Congressional direction, the prototype radar at Raleigh-Durham was upgraded and commissioned. In addition, a production contract for manufacture and installation of 5 E-scan radars was awarded to Allied Signal Inc.

Mode S
SUMMARY: Mode S replaces the existing air traffic control radar beacon system (ATCRBS) providing enhanced surveillance information for use by Air Traffic Control automation. The Mode S provides more accurate position information and minimizes interference by discreet interrogation of each aircraft. Through this ability to address each aircraft individually, Mode S provides the medium for a digital data link. This data link will be used to exchange information between aircraft and various ATC functions and weather databases. These systems were produced by a joint venture between Westinghouse (now Northrop Grumman Corporation) and Unisys.

ATCRBS
SUMMARY:  Air Traffic Control Radar Beacon System (ATCRBS) Relocate - This program provides for the relocation of the newer ATCBI-4/5 systems available as a result of Mode S installations to locations with new requirements for Beacon systems and to sites which presently use the older vacuum tube-type (ATCBI-3s). It also provides for the disposal of the ATCBI-3s and provisions for Radar Beacon Performance Monitors (RBPMs) at 25-30 ATCBI locations where shortages exist. The contractor for this program is Raytheon Corporation.

ATCBI
SUMMARY: Air Traffic Control Beacon Interrogator (ATCBI) Replace - This program will replace aging ATCBI equipment (ATCBI-4/5) at up to 200 operational sites to maintain ground surveillance and decrease supportability costs. This equipment is becoming difficult to maintain due to its age. The contractor for this effort is TBD. (See ATCBI Replacement Program (ATCBI-6))