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Aircraft with M81 course deviation indicator The same message appears on the front face of the indicator. Aircraft with M73 horizontal situation indicator (HSI) "NAV1/GPS1" pushbutton of M6 advisory panel enables the selected information of VOR/ILS or GPS navigation source to be directed towards the horizontal situation indicator. The pushbutton indicator light relative to selection illuminates. All At energization, the equipment automatically performs a test and displays a page about the validity of the NAV data base card. To exit this page press momentarily the "ENT" pushbutton. The equipment shifts into satellite acquisition phase and then is ready for operation. If the satellite coverage is marginal, the equipment uses the altitude coding supplied by the encoding altimeter of the aircraft. On the advisory panel, GPS function lights are directly controlled by the COMM./VOR-ILS/ GPS transceiver to inform or alert the pilot of a situation requiring his attention. AOAO Validity : GPS 1 - GNS 430 34-57-00 (DO) Page 5 JUN 04 The COMM.NOR-ILS/ GPS transceiver converts GPS navigation information into DC signals, to actuate the vertical pointer, the "TO/FR" indicator and the warning flag of the course deviation indicator or of the HSI. The COMM./VOR-ILS/ GPS transceiver connected to an equipment of the same type (GNS 430) of the GPS 2 enables, via a RS232 type link, flight plans to be transferred from station to station. The A82 flight computer of the autopilot receives the GPS navigation data. For the management of fuel pages, the COMM./VOR-ILS/ GPS transceiver exchanges, via a RS232 type link, data with the fuel flow system. AOAO Validity : GPS 1 - GNS 430 34-57-00 p.) Page 6 NOV 01 RELAIS GENERAL RADIO INTERRUPTEUR GENERAL RADIO RADIO MASTER RELAY RADIO MASTER SWITCH Global Positioning System (GPS) - Schematic Figure 3 MAO Validity : GPS 1 - GNS 430 34-57-00Page 7 (DO) JUN 04 PAGE INTENTIONALLY LEFT BLANK AOAO Validity : GPS 1 - GNS 430 34 57-00(DQ) Page 8 NOV 01 GLOBAL POSITIONING SYSTEM (GPS) DESCRIPTION AND OPERATION 1. GENERAL The GPS is a satellite-based radionavigation system which enables an aircraft to be located anywhere (tridimensional positioning : latitude, longitude and altitude). The system consists of : - the A77 COMM./VOR-ILS/GPS transceiver GNS 430 - the E49 GPS antenna GA 56 The system also uses : - the M74 course deviation indicator to display VOR/ILS or GPS information - refer to 34-52-00, The A77 COMM./VOR-ILS/GPS transceiver receives altitude information from the encoding altimeter - refer to 34-11-00. The A77 COMM.NOR-ILS/GPS transceiver is connected, via RS232 type link to GPS 1 (400-series or 500-series GNS) system - refer to 34-57-00. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 2(71) |
