Honeywell MK VIII manual AOA Validity Discretes MK V and MK VII only, Display Select Discretes

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EGPWS LINE MAINTENANCE MANUAL

3.8.20 AOA VALIDITY DISCRETES (MK V AND MK VII ONLY)

Two AOA validity discretes may be used by EGPWS, one for each source of AOA. Input will come from either an AOA Indication System or a Stall Warning Computer, depending on the type being used by the aircraft.

Type:

Fail Flag from AOA Indication System or a Stall Warning Computer

Signal Status:

Fail or Not Fail

 

 

 

 

 

 

 

 

 

 

 

Level 6 Audio readout

AOA Validity Discrete #1

 

Valid =>

“AOA 1

Valid”

 

Invalid =>

“AOA 1

Invalid”

 

 

 

AOA Validity Discrete #2

 

Valid =>

“AOA 2

Valid”

 

Invalid =>

“AOA 2

Invalid”

 

 

 

3.8.21 DISPLAY SELECT DISCRETES

Type: Supplied by momentarily actuated cockpit manual switch. Two types are supported:

Type 1: momentary make/break switch

Type 2: toggle type switch

Signal Status: Terrain Awareness Display (TAD) activated if not active or TAD canceled if currently active.

 

 

Level 6 Audio readout

 

Display Select Discrete #1

 

True =>

“Display Discrete 1 True”

 

False =>

“Display Discrete 1

False”

 

 

Display Select Discrete #2

 

True =>

“Display Discrete 2

True”

 

False =>

“Display Discrete 2

False”

 

 

3.8.22 TERRAIN AWARENESS & TCF INHIBIT

Type: Switch for inhibit of Terrain Awareness & TCF functions

Signal Status: Terrain Awareness & TCF Inhibit or Not Inhibit

“Terrain Inhibited” will be enunciated during cockpit Self-Test if inhibited.

Fault monitoring: For some installations, activation of this input for more than 5 seconds will activate the Terrain

Monitor (refer to the Terrain Display Configuration Data table for each aircraft type).

Level 6 Audio readout

Terrain Awareness & TCF Inhibit

Disabled =>

“Terrain Off”

Normal =>

“Terrain On”

3.8.23 SIMULATOR REPOSITION (MK V AND MK VII ONLY)

Type:

Switch for activating Simulator Reposition

Signal Status:

Reposition or Normal

If the Simulator Reposition program pin option is activated, then this discrete can be used to ‘preset’ the EGPWS to match simulator initial conditions.

Level 6 Audio readout

Simulator Reposition Discrete

Reposition =>

“Simulator Reposition On”

Normal =>

“Simulator Reposition Off”

CAGE CODE: 97896

SCALE: NONE SIZE: A DWG NO.: 060-4199-180

REV: G

SHEET 44 of 68

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Contents Egpws Line Maintenance Manual Drawn Revisions DescriptionDate ApprovedEFF PT 14A Disp USE Table of Contents Maintenance Practices 10.1 MK V Egpwc Part Numbers MK VII Egpwc Part Numbers Introduction ScopeApplicability Reference Documents MK VI, MK VIII, MKDescription and Operation General System Description Enhanced Ground Proximity Warning SystemOperation Mode 1 Excessive Descent Rate Mode 2A/2B Terrain Closure RateMode 3 Descent After Takeoff Mode 4A/4B/4C Unsafe Terrain ClearanceCallout Description Mode 5 Descent below GlideslopeMode 6 Advisory Callouts Optional Smart Five Hundred Mode 7 Windshear Detection Optional for MK V/VII only Excessive Bank Angle CalloutTail Strike Callout Envelope Modulation not Available in MK VI/VIIITerrain and Obstacle Database Runway DatabaseTerrain Alerting and Display Optional Weather Radar Autotilt MK V and MK VII only Peaks Display Mode OptionalGeometric Altitude GPS Required Altimeter Monitor Option for MK V and MK VII only System Display and AnnunciationStabilized Approach Monitor Option for MK V and MK VII only Long Landing Monitor Option for MK V and MK VII only LOW Airspeed Monitor MK V Boeing 737NG onlyBelow Lamp FormatBIT Description System Maintenance Maintenance PhilosophySystem Operation During AN Inop Condition Front Panel Test Connector Egpwc Front PanelEgpws Status LED’S Front Panel SELF-TEST Interface MK V and MK VII onlySELF-TEST Functions External Computer Fault Fail Corrective Action Fault Isolation Troubleshooting GeneralTroubleshooting Guide Level 1 SELF-TEST GO/NO GO Test SELF-TEST PreambleShort Level 1 SELF-TEST Gpws INHIBITED, Terrain InhibitedGpws Inhibited SELF-TEST InhibitedLevel 2 SELF-TEST Current Faults Long Level 1 SELF-TESTCurrent Faults Internal Current Faults ExternalFault Example Reason Bussignal Fault BUS Wiring FaultFlap Switch Fault Gear Switch FaultProgram PIN Read Error System or Mode Tasked FailedCallouts Option Invalid Audio Menu InvalidSheet 31 Terrain AWARENESS-POSITION Error Terrain Clearance Floor Position ErrorTerrain Awareness no Valid Latitude Terrain Awareness no Valid LongitudeLevel 3 SELF-TEST System Configuration Following Information is Given in the Level 3 SELF-TESTIRS 1 Attitude Mode Selected Egpws Line Maintenance Manual Level 4 SELF-TEST Fault History Following Information is Given in the Level 4 SELF-TESTFollowing Information is Given in the Level 5 SELF-TEST Level 5 SELF-TEST Alert HistoryLevel 6 SELF-TEST Discrete Input Test 3 +28V Landing Gear Discrete Arinc 552 / ALT 55 Radio Altitude Validity Flag DiscretesGND Landing Gear Discrete GND Landing Flap Discrete or Flap Override 5 +28V Landing Flap or Flap Override DiscreteFlap Position Discretes SELF-TEST DiscreteSteep Approach Discretes Steep Approach Discrete #1 MK V and MK VII onlySteep Approach Discrete #2 GND ILS Tuned Discrete10 +28V ILS Tuned Discrete Glideslope Validity DiscretesGND Glideslope Cancel Discrete GND Glideslope Inhibit Discrete13 +28 V Glideslope Inhibit Discrete Decision Height DiscreteMode 6 Volume Control Discrete Callouts Enable Discrete MK V and MK VII onlyGND Audio SUPPRESSINHIBIT/ALL Modes Inhibit Discrete 19 +28 V Audio SUPPRESSINHIBIT/ALL Modes Inhibit DiscreteAOA Validity Discretes MK V and MK VII only Display Select DiscretesTerrain Awareness & TCF Inhibit Simulator Reposition MK V and MK VII onlyWeather Radar ON/OFF Localizer Validity Discretes MK V and MK VII onlyAttitude Validity Discretes Airspeed Validity DiscreteBarometric Altitude Rate Validity Discretes Acceleration SELF-TEST in Progress DiscreteLongitudinal Acceleration Validity Discrete Normal Acceleration Validity DiscretePLI Deselect Switch Discretes MK V and MK VII only Magnetic Heading Validity DiscreteAOA Vane Heater Discrete Autopilot Disconnect DiscretesTactical Select Discrete Altitude Alert DiscreteCorrected Barometric Altitude Validity Discrete Momentary Flap Override DiscreteWeight on Wheels Discrete Raas Enable Discrete MK V and MK VII onlyGpws Inhibit Discrete Raas Inhibit Discrete MK V and MK VII onlyLOW Airspeed Monitor Inhibit Discrete MK V 737NG only Maintenance Practices General Database UpdateDatabase Update Frequency Loading a DatabaseObtaining AN Egpws Flight History Download Card Download ProcedureFlight History Downloading Transcription of the Pcmcia Card Via email aerotechsupport@honeywell.comSheet 54 CFG CAT 7 92 T CUW command/data string REMOVAL/INSTALLATION 6.1 Egpwc Removal InstallationConfiguration Module MK VI, MK VIII, and MK Xxii only Servicing GeneralEgpws Ground Tests Display Switching Relays if InstalledADJUSTMENT/TEST Adjustment Repairs General CLEANING/PAINTING GeneralINSPECTION/CHECK General Appendix a Winviews Appendix B Troubleshooting DO’S and do NOT’S Appendix C Raas Maintenance Messages Aural & Displayed Maint Function MessageMaint Function Displayed Message RAAS-NA-xxxx amber RAAS-RTO green RAAS-INOP amberAppendix D Stabilized Approach Monitor Maintenance Messages Self-Test Level 3 RCD Part NumberAppendix E Altimeter Monitor Maintenance Messages Self-Test Level 1 Flaps Monitor Inop Appendix G Long Landing Monitor Maintenance Messages Appendix H LOW Airspeed Monitor Maintenance Messages Self-Test Level 3 Airspeed Low Inhibited Annunciated at

MK VIII, MK V, MK XXII, MK VII, MK VI specifications

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The Honeywell MK VI control system is renowned for its ability to provide effective plant control and management tools, featuring advanced operator interfaces and robust hardware components. It employs a modular design, which allows for easy scalability and integration into existing infrastructure. The MK VI is equipped with Ethernet-based communication protocols, ensuring high-speed data transfer and enabling seamless connectivity with other systems.

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