3.8.24 Weather Radar On/Off...........................................................................................................................40
3.8.25 Localizer Validity Discretes (MK V and MK VII only) ............................................................................. 40
3.8.26 Attitude Validity Discretes ...................................................................................................................... 41
3.8.27 Airspeed Validity Discrete......................................................................................................................41
3.8.28 Barometric Altitude Rate Validity Discretes ........................................................................................... 41
3.8.29 Acceleration Self-Test In Progress Discrete..........................................................................................41
3.8.30 Longitudinal Acceleration Validity Discrete............................................................................................42
3.8.31 Normal Acceleration Validity Discrete.................................................................................................... 42
3.8.32 Magnetic Heading Validity Discrete ....................................................................................................... 42
3.8.33 AOA Vane Heater Discrete....................................................................................................................42
3.8.34 PLI Deselect Switch Discretes (MK V and MK VII only) ........................................................................ 43
3.8.35 Autopilot Disconnect Discretes .............................................................................................................. 43
3.8.36 Tactical Select Discrete ......................................................................................................................... 43
3.8.37 Altitude Alert Discrete ............................................................................................................................ 43
3.8.38 Corrected Barometric Altitude Validity Discrete.....................................................................................44
3.8.39 Momentary Flap Override Discrete........................................................................................................44
3.8.40 Weight On Wheels Discrete................................................................................................................... 44
3.8.41 GPWS Inhibit Discrete ........................................................................................................................... 44
4 MAINTENANCE PRACTICES..............................................................................................................................45
4.1 GENERAL ................................................................................................................................................................ 45 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：增强型近地警告系统 Enhanced Ground Proximity Warning 航线维护手册 Systems Line Maintenance Manual(5)
