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EGPWS LINE MAINTENANCE MANUAL
MK V
MK VI
MK VII
MK VIII
MK XXII
Enhanced Ground Proximity Warning Systems
Line Maintenance Manual
Document No: 060-4199-180, Rev G
Release date: 29 Mar 2010
Honeywell International, Inc.
Redmond, Washington 98073-9701
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO.: 060-4199-180 REV: G SHEET 1 of 68
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EGPWS LINE MAINTENANCE MANUAL This document is an unpublished work. Copyright 2005, 2010 Honeywell International, Inc. All rights reserved. This document and all information and expression contained herein are the property of Honeywell and is provided to the recipient in confidence on a “need to know” basis. Your use of this document is strictly limited to a legitimate business purpose requiring the information contained therein. Your u
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EGPWS LINE MAINTENANCE MANUAL REVISIONS SHT REV DESCRIPTION DATE APPROVED All Initial release. 23 FEB 00 R. Halbert Reason 01 Severity 10 23 FEB 00 G. Gilliland All A Direct update: 07 AUG 01 R. Henderson Incorporate –008 changes 07 AUG 01 L. Matter Reason 01 Severity 10 All B Direct update to incorporate EGPWC/GNSSU part numbers 13 FEB 02 B. Breen and troubleshooting information. Revised Level 2 13 FEB 02 G. Gilliland descriptions. Reason 01 Severity 10 All C Direct update
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EGPWS LINE MAINTENANCE MANUAL REVISIONS SHT REV DESCRIPTION DATE APPROVED All E Section 3.3.2 – added RAAS maintenance message to short 01 FEB 05 S. Wright Level 1 Self-Test sequence and two notes, one to ensure 03 FEB 05 K. Christofferson RAAS messages only occur if RAAS is activated and one to explain the GPS NOT NAVIGATING enunciation. Section 3.5 - added note to ensure RAAS message only occurs if RAAS is activated. Section 6.1.2 – modified step 6 to add Level 3 Self-Test. Reason
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EGPWS LINE MAINTENANCE MANUAL TABLE OF CONTENTS 1 INTRODUCTION.....................................................................................................................................................8 1.1 SCOPE......................................................................................................................................................................8 1.2 APPLICABILITY.......................................................................................
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EGPWS LINE MAINTENANCE MANUAL 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 Discrete
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EGPWS LINE MAINTENANCE MANUAL 5.1 GENERAL................................................................................................................................................................57 6 REMOVAL/INSTALLATION.................................................................................................................................57 6.1 EGPWC..................................................................................................................................
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EGPWS LINE MAINTENANCE MANUAL 1 INTRODUCTION 1.1 SCOPE This document provides information about the Enhanced Ground Proximity Warning System (EGPWS) with respect to Line Maintenance Operations. This includes Description and Operation, Troubleshooting, Removal and Installation, Adjustment and Test, and other related information. It is intended that the information in this document be combined with detailed aircraft installation documentation for operator specific line maintenance procedur
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EGPWS LINE MAINTENANCE MANUAL MK V & MK VII EGPWC (left) and MK VI, MK VIII, MK XXII EGPWC (right) Figure 1-1 - Enhanced Ground Proximity Warning Computers 1.3 REFERENCE DOCUMENTS The following documents are identified as additional EGPWS references: MK V and MK VII: 965-0976-603 .........Product Specification for the EGPWS (MK V and MK VII) 060-4404-000………Product Description for Runway Awareness and Advisory System (RAAS) prior to -230-230 060-4564-000………Product Descrip
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EGPWS LINE MAINTENANCE MANUAL 2 DESCRIPTION AND OPERATION 2.1 GENERAL SYSTEM DESCRIPTION The purpose for the Enhanced Ground Proximity Warning System (EGPWS) is to help prevent accidents caused by Controlled Flight Into Terrain (CFIT), obstacles, or severe windshear. The Enhanced Ground Proximity Warning Computer (EGPWC) accepts a variety of aircraft sensors and system inputs and applies alerting algorithms to provide the flight crew with aural messages and visual annunciations when the b
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EGPWS LINE MAINTENANCE MANUAL 2.1.1 ENHANCED GROUND PROXIMITY WARNING COMPUTER (EGPWC) All EGPWS functions are processed by a single Line Replaceable Unit (LRU) called the Enhanced Ground Proximity Warning Computer (EGPWC). The MK V and MK VII EGPWC are digitally controlled computers housed in a 2 MCU ARINC 600-6 form factor chassis intended for Air Transport type aircraft. Installation configuration is defined by program pin strapping in the aircraft. The MK VI and MK VIII EGPWC are d
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EGPWS LINE MAINTENANCE MANUAL provides “TOO LOW TERRAIN” or “TOO LOW FLAPS” depending on airspeed. Mode 4C provides “TOO LOW TERRAIN”. EGPWS alert lights are illuminated during these alerts. 2.2.5 MODE 5 - DESCENT BELOW GLIDESLOPE Mode 5 provides audio and visual alerts for excessive glideslope deviation when the aircraft descends below the glideslope beam on front-course ILS approaches. Two levels of alerting are provided. If the aircraft is below 1000 feet AGL and gets to or exceeds
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EGPWS LINE MAINTENANCE MANUAL MODEL CALLOUT DESCRIPTION V VI VII VIII XXII 500 TONE Provides 2 second 960 Hz tone at descent below 500 # # # • • feet SMART “FIVE HUNDRED” At descent below 500 feet (only) during non-precision • • • • • approach “FIVE HUNDRED” Above field callout within 5 nm of a runway in the # # # • • database “FIVE HUNDRED ABOVE” Above field callout within 5 nm of a runway in the # # # • • database “FOUR HUNDRED” At descent below 400 feet • • • • # “THREE
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EGPWS LINE MAINTENANCE MANUAL 2.2.6.1 EXCESSIVE BANK ANGLE CALLOUT The Bank Angle Callout feature provides callout enunciation for excessive bank angles based on altitude and bank angle limits defined by aircraft type. It is intended to enhance situational awareness during intentional or unintentional maneuvering, and for protection against wing or engine strikes when close to the runway. When the bank angle limit is reached, the aural callout “BANK ANGLE, BANK ANGLE” is given. Follow-o
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EGPWS LINE MAINTENANCE MANUAL When an aircraft penetrates either the TCF or the RFCF alert envelope, the aural message “TOO LOW TERRAIN” will occur. This aural message will occur once when initial envelope penetration occurs, and one time thereafter for each 20% degradation in either Altitude (AGL) or Altitude (ASL) depending on which envelope was violated (TCF or RFCF respectively). EGPWS cockpit alert annunciations remain illuminated until the alert envelope is exited. The TCF and RFCF
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EGPWS LINE MAINTENANCE MANUAL The Obstacle Database (in MK V and MK VII -204-204 and later, and MK VI, MK VIII and MK XXII) is a separate file included within the terrain database. Both files are loaded into the EGPWS in the terrain database PCMCIA card. The obstacle database is accessed by the EGPWC application software only if obstacle alerting is enabled by installation configuration. The obstacle data is processed by the EGPWS in the same fashion as terrain, and is presented on the d
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EGPWS LINE MAINTENANCE MANUAL below the antenna beam scan resulting in a blank display. Alternately, under-scan, where the antennas scan is hitting the ground below the weather cells, results in ground clutter display. The calculated tilt angle is transmitted on the ARINC 429-output bus (labels 061, 062, 063, 064, and 065) for any compatible Weather Radar system. See the appropriate Part Number ICD for complete Label definitions. 2.2.14 SYSTEM DISPLAY AND ANNUNCIATION In addition to the
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EGPWS LINE MAINTENANCE MANUAL installation does require that the EGPWS has a source of GPS data, software -230-230 or later, Terrain Database version 454 or later, and the Reloadable Customer Definitions (RCD) is loaded. When enabled, Altimeter Monitor operates automatically, without any action required from the flight crew. Altimeter Monitor availability can be verified by performing an EGPWS self test. See Appendix E for Altimeter Monitor Maintenance Messages. 2.2.18 TAKEOFF FLAP CONF
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EGPWS LINE MAINTENANCE MANUAL 2.2.21 LAMP FORMAT The EGPWS contains two different caution/warning lamp illumination formats as described below. Lamp Format 1 provides EGPWS warning (red) and caution (amber) alert lamp drive logic such that: • Only a Mode 5 “Glideslope” alert will activate the caution lamp output (amber). • All other alerts (except “windshear” and Mode 6 callouts) will activate the warning lamp output (red). “SINK RATE, SINK RATE” (RED) “PULL UP” “TERRAIN, TERRAIN” PULL “
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EGPWS LINE MAINTENANCE MANUAL 2.3 SYSTEM MAINTENANCE 2.3.1 MAINTENANCE PHILOSOPHY The EGPWS is an “on-condition” only maintenance system. No scheduled maintenance is required. This is accomplished by both continuous Built-In-Test (BIT) and event initiated test functions. Event initiated test refers to both power-up tests and manually activated Self-Tests. Results of these functions are indicated by system status indicators and messages so that the systems functionality can be assessed
