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EGPWS LINE MAINTENANCE MANUAL
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO.: 060-4199-180 REV: G SHEET 6 of 68
3.8.3 +28V Landing Gear Discrete.....................................................................................................................38
3.8.4 GND Landing Flap Discrete or Flap Override ...........................................................................................39
3.8.5 +28V Landing Flap or Flap Override Discrete...........................................................................................39
3.8.6 Flap Position Discretes..............................................................................................................................40
3.8.7 Self-Test Discrete......................................................................................................................................40
3.8.8 Steep Approach Discretes.........................................................................................................................40
3.8.9 GND ILS Tuned Discrete...........................................................................................................................41
3.8.10 +28V ILS Tuned Discrete ..........................................................................................................................41
3.8.11 Glideslope Validity Discretes.....................................................................................................................41
3.8.12 GND Glideslope Inhibit Discrete................................................................................................................42
3.8.13 +28 V Glideslope Inhibit Discrete ..............................................................................................................42
3.8.14 GND Glideslope Cancel Discrete..............................................................................................................42
3.8.15 Decision Height Discrete...........................................................................................................................42
3.8.16 Mode 6 Volume Control Discrete ..............................................................................................................43
3.8.17 Callouts Enable Discrete (MK V and MK VII only) ....................................................................................43
3.8.18 GND Audio Suppress(Inhibit)/All Modes Inhibit Discrete ..........................................................................43
3.8.19 +28 V Audio Suppress(Inhibit)/All Modes Inhibit Discrete.........................................................................43
3.8.20 AOA Validity Discretes (MK V and MK VII only) .......................................................................................44
3.8.21 Display Select Discretes............................................................................................................................44
3.8.22 Terrain Awareness & TCF Inhibit ..............................................................................................................44
3.8.23 Simulator Reposition (MK V and MK VII only) ..........................................................................................44
3.8.24 Weather Radar On/Off...............................................................................................................................45
3.8.25 Localizer Validity Discretes (MK V and MK VII only).................................................................................45
3.8.26 Attitude Validity Discretes..........................................................................................................................45
3.8.27 Airspeed Validity Discrete .........................................................................................................................45
3.8.28 Barometric Altitude Rate Validity Discretes...............................................................................................46
3.8.29 Acceleration Self-Test In Progress Discrete .............................................................................................46
3.8.30 Longitudinal Acceleration Validity Discrete ...............................................................................................46
3.8.31 .......................................................................................................................................................................46
3.8.32 Normal Acceleration Validity Discrete .......................................................................................................46
3.8.33 Magnetic Heading Validity Discrete...........................................................................................................47
3.8.34 AOA Vane Heater Discrete .......................................................................................................................47
3.8.35 PLI Deselect Switch Discretes (MK V and MK VII only)............................................................................47
3.8.36 Autopilot Disconnect Discretes..................................................................................................................47
3.8.37 Tactical Select Discrete.............................................................................................................................48
3.8.38 Altitude Alert Discrete................................................................................................................................48
3.8.39 Corrected Barometric Altitude Validity Discrete ........................................................................................48
3.8.40 Momentary Flap Override Discrete ...........................................................................................................48
3.8.41 Weight On Wheels Discrete ......................................................................................................................49
3.8.42 GPWS Inhibit Discrete...............................................................................................................................49
3.8.43 RAAS EnABLE Discrete (MK V and MK VII Only) ....................................................................................49
3.8.44 RAAS Inhibit Discrete (MK V and MK VII Only) ........................................................................................49
3.8.45 Stabilized Approach Monitor Enable Discrete (MK V and MK VII Only) ...................................................50
3.8.46 Stabilized Approach Monitor Inhibit Discrete (MK V and MK VII Only).....................................................50
3.8.47 Low Airspeed Monitor Inhibit Discrete (MK V – 737NG Only) ..................................................................50
4 MAINTENANCE PRACTICES..............................................................................................................................51
4.1 GENERAL................................................................................................................................................................51
4.2 DATABASE UPDATE .................................................................................................................................................51
4.2.1 Database Update Frequency ....................................................................................................................51
4.2.2 Loading a Database ..................................................................................................................................51
4.3 FLIGHT HISTORY DOWNLOADING..............................................................................................................................52
4.3.1 Obtaining an EGPWS Flight History Download Card ...............................................................................52
4.3.2 Download Procedure.................................................................................................................................52
4.3.3 Transcription of the PCMCIA Card............................................................................................................53
4.4 PROGRAMMING THE CONFIGURATION MODULE (MK VI, MK VIII, MK XXII ONLY)........................................................54
4.4.1 Configuration Module Reprogramming (MK VI, MK VIII, MK XXII only) ...................................................55
5 SERVICING ..........................................................................................................................................................57