Garmin GFC 600H, Maintenance Manual

Page 1: ...ystem Part 27 STC Maintenance Manual Contains Instructions for Continued Airworthiness Rotorcraft Make Model Registration Number and Serial Number and accompanying STC configuration information in App...

Page 2: ...y prohibited Garmin flyGarmin GFC are registered trademarks of Garmin International or its subsidiaries GNS GDL GTN and GTX are trademarks of Garmin International or its subsidiaries These trademarks...

Page 3: ...Garmin in connection with this Agreement c Licensed Software means the software in binary executable form that is embedded in the i Devices and or made available for use on the Devices via a software...

Page 4: ...tware and documentation are provided as is and as available with no warranties guarantees or representations and neither Garmin nor its affiliates make any representation warranty or guarantee statuto...

Page 5: ...arge any part of this Agreement or any rights or obligations of any Party under or by reason of this Agreement No delay or failure in exercising any right power or remedy hereunder will affect or oper...

Page 6: ...ption 1 02 05 2020 Initial release 2 04 28 2020 Minor change to include GMU 44B 3 01 13 2023 Minor change to update Collective Position Sensor adjustment Section Description of Change 4 1 Updated stat...

Page 7: ...Perchlorate Material special handling may apply Refer to www dtsc ca gov hazardouswaste perchlorate NOTE All screen shots used in this document are current at the time of publication Screen shots are...

Page 8: ...vals 4 5 4 4 Visual Inspection 4 6 4 5 Electrical Bonding Check 4 8 4 6 Magnetic Field Updates 4 8 4 7 Servo Arm Torque Check 4 9 5 TROUBLESHOOTING 5 1 5 1 General Troubleshooting 5 2 5 2 GMC 605H Mod...

Page 9: ...URN TO SERVICE 8 1 8 1 Maintenance Records 8 2 8 2 Configuration Mode Functional Checkout 8 2 8 3 Normal Mode Functional Checkout 8 3 APPENDIX A INSTALLATION SPECIFIC INFORMATION A 1 A 1 General Insta...

Page 10: ...052 Connectors 5 14 Figure 5 3 GFS 83 P831 P R Y Connector 5 17 Figure 5 4 GSU 75H J751 Connector 5 18 Figure 5 5 GSU 79H J791 Connector 5 20 Figure 5 6 GMU 44 J441 Pigtail Connector 5 22 Figure 5 7 G...

Page 11: ...1 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page x Figure 6 20 GRS 79H or GSU 75H Configuration Module Installation 6 36 Figure 7 1 Rotorcraft Position Example 7 15 Figure 8 1 Audio Test P...

Page 12: ...3 GMC 605H CAS Troubleshooting 5 4 Table 5 4 GMC 605H Configuration Mode Post Install Procedures Test Faults 5 7 Table 5 5 General Troubleshoot Guide for AHRS ADC Install Tool 5 10 Table 5 6 ADC Field...

Page 13: ...3 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 1 1 1 INTRODUCTION 1 1 Purpose 1 2 1 2 Scope 1 2 1 3 Applicability 1 2 1 4 Revision and Distribution 1 2 1 5 Terminology 1 3 1 6 Reference Doc...

Page 14: ...ance with STC SR02647SE 1 3 Applicability This document applies to all rotorcraft with the GFC 600H FCS installed in accordance with STC SR02647SE Maintenance information provided in this document mus...

Page 15: ...Ground Speed Mode CAN Controller Area Network GSU Garmin Sensor Unit CAS Crew Alerting System GTN Garmin Touch Navigator radio CCW Counter Clockwise GTP Garmin Temperature Probe CDI Course Deviation I...

Page 16: ...chnical Standard Order ODA Organization Designation Authorization USB Universal Serial Bus PC Personal Computer VDC Volts of Direct Current PFD Primary Flight Display VFR Visual Flight Rules PFT Pre f...

Page 17: ...these documents are used during operation servicing or maintenance of the GFC 600H FCS All of the documents listed in Table 1 1 are available for download on the Garmin Dealer Resource Center Table 1...

Page 18: ...H Flight Control System Functions 2 2 2 2 System Overview 2 3 2 2 1 Attitude Hold ATT 2 3 2 2 2 Helicopter Electronic Stability and Protection H ESP 2 4 2 2 3 Flight Director Modes 2 5 2 2 4 GMC 605H...

Page 19: ...ions The GFC 600H FCS is a 2 axis flight control system with an optional 3rd axis Yaw The GFC 600H utilizes a parallel servo installed in each control axis to provide force trim attitude hold and auto...

Page 20: ...the pilot is hands on When trimmed to a level roll attitude the system will make small corrections to maintain and stabilize an aircraft heading When holding a pitch attitude at higher airspeeds speed...

Page 21: ...may lead to unsafe flight conditions The system assists pilots in maintaining the helicopter in a safe attitude within the flight envelope This functionality is automatically enabled on each power cyc...

Page 22: ...ction provides roll inputs to capture and maintain the selected navigational source such as VHF VOR LOC or GPS lateral guidance APR This function provides pitch and roll inputs to maintain the selecte...

Page 23: ...STC Maintenance Manual Rev 3 Page 2 6 The block diagram shown in Figure 2 1 illustrates the high level system interconnectivity The following sections will provide an overview of the system components...

Page 24: ...is also the maintenance interface for software updates and configuration of the GFC 600H via a micro USB port located on the front panel of the bezel Figure 2 2 GMC 605H Mode Controller The GMC 605H i...

Page 25: ...ions interfaces as well as analog signal interfaces The following list summarizes the available I O within the GMC 605H Aircraft Power and Ground One I2C bus Configuration module Three Ethernet Inputs...

Page 26: ...oach navigation LOC Localizer navigation VOR Enroute VOR navigation VAPP Approach VOR navigation Pitch GS ILS Glideslope navigation GP GPS Glidepath navigation The GFC 600H does not support coupled en...

Page 27: ...t When the aircraft is in trim forces are minimized The GFS 83 also works as an autopilot and provides automated control functions within the GFC 600H system The GFS 83 contains a brushless DC motor t...

Page 28: ...e as the primary state for control functions Two attitude sources are required by the system They to provide the following sensor data to the GFS 83 servos for ATT and autopilot functionality Pitch Ro...

Page 29: ...GMC 605H AHRS solution 2 2 6 2 Air Data The GFC 600H requires one air data source for AHRS aiding and air data thresholds for various flight control modes GMC 605H can share a common air data source...

Page 30: ...robe 2 2 6 4 AHRS ADAHRS Interfaces GRS 79H and GSU 75H support various digital system I O The system supports ARINC 429 RS 232 RS 485 and CAN communications interfaces The following list summarizes t...

Page 31: ...to the system AHRS The GMU 44 receives power directly from the GSU 75H and communicates with the AHRS unit using an RS 485 or RS 422 digital interface Figure 2 9 GMU 44 and GMU 44B Magnetometers 2 2...

Page 32: ...GMC 605H over an RS 232 serial connection The following GPS SBAS units are approved as a source of GPS for the GMC 605H GTN 6XX 7XX or GTN Xi series navigators GNS 4XX 5XXW series navigators GTX 3X5...

Page 33: ...to the individual Environmental Qualification Forms for details on surge ratings and minimum maximum operating voltages Current draw of each LRU is summarized in Table 2 2 Table 2 2 GFC 600H Electrica...

Page 34: ...3 10 3 3 1 Software Loading 3 13 The following sections provide visual layout and descriptions of the interfaces and modes of the GFC 600H FCS Refer to GFC 600H Pilot s Guide P N 190 02081 04 and Roto...

Page 35: ...eference when this mode is engaged Heading is also the default lateral flight director mode for the system When activating NAV or APR if the system cannot immediately capture the guidance HDG will bec...

Page 36: ...the cyclic ALT hold reference may only be adjusted 250 feet from the current aircraft altitude Large changes in altitude should be done with IAS or VS using the altitude select function Altitude selec...

Page 37: ...itches Label Function TRIM Adjusts pitch roll reference or flight director reference FTR FCS ENG Force Trim Release Flight Control System Engage Set reference attitude or flight director reference FCS...

Page 38: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 3 5 Figure 3 3 Yaw Switch May be located in alternate location...

Page 39: ...hat are seen with a Garmin GDU Figure 3 4 G500H Alerts and Annunciations Layout Table 3 4 Description of GDU FCS Annunciation Bar Description Location Active lateral flight director mode GREEN 1 Armed...

Page 40: ...represents any valid active lateral mode or may be blank 3 FCS Status Low Max speed protection alerts will display next to the Vertical Mode Annunciation box Not Engaged Not present Approach APR Mode...

Page 41: ...of Detent Out of Detent 10 sec flashing Servo Transition active to off flashing Single Axis Failure FCS Unavailable Decoupled FCS not engaged Not present Level Mode will display as Active Lat and Ver...

Page 42: ...Altitude Capture mode is automatically armed when selecting the VS or IAS vertical modes XXX represents any valid active vertical mode or may be blank 8 Second Armed Vertical Mode XXX represents any v...

Page 43: ...energized then press and hold the LVL key while applying power to the system 2 Release the LVL key when the splash screen is displayed 3 Press the GMC key located below the displayed CONT arrow Basic...

Page 44: ...OSE UP DN Scroll page selections Refer to Figure 3 7 for page selections 5 IAS Move cursor left cancel navigation or selection code upload summary May also be used to enter Normal mode instead of ente...

Page 45: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 3 12 Not used under this STC Figure 3 7 GMC 605H Configuration Mode Map...

Page 46: ...n to go into Configuration mode 7 The VS and IAS keys navigate the cursor across the screen Selected data is shown in reverse video on the display The scroll wheel navigates through selected pages opt...

Page 47: ...e used for various tasks The following list describes what tasks can be performed from which SD card slot Either slot Installer Unlock Card Top or left slot Software updates GSU GRS log downloads Flig...

Page 48: ...e accomplished using the following procedure 1 Create a Software Update SD card using approved software and instructions available on the Dealer Resource Center NOTE All software updates must be conta...

Page 49: ...uration mode 3 Access the GSU GRS Flight Log Downloads page Diagnostics AHRS ADC GSU GRS Flight Log Downloads 4 Press Select Unit and choose which AHRS unit data should be retrieved from 5 Select the...

Page 50: ...quired Tools 4 3 4 2 4 Specialty Tools 4 4 4 3 Maintenance Intervals 4 5 4 4 Visual Inspection 4 6 4 4 1 Lightning Strike 4 6 4 5 Electrical Bonding Check 4 8 4 6 Magnetic Field Updates 4 8 4 7 Servo...

Page 51: ......

Page 52: ...ction 5 1 4 2 3 Required Tools The following tools and test equipment are required to perform maintenance tasks Calibrated 4 wire milliohm meter with an accuracy of 0 1 milliohms or better is required...

Page 53: ...Maintenance Manual Rev 3 Page 4 4 4 2 4 Specialty Tools Required None Optional Shaft Locking Device Garmin P N 117 01307 00 is recommended The tool is used with the clutchless GFS 83 servo variant to...

Page 54: ...ve and replace GFC 600H equipment per Section 1 as required On Condition 1 AHRS Magnetic Field Model Update Update GMC 605H internal AHRS unit and GSU 75H AHRS Earth Magnetic Field Model per Section 4...

Page 55: ...r and the sensor arm is tightly clamped on the collective control torque tube 5 Inspect GMC 605H knobs and buttons are not damaged and markings are legible Return the unit to Garmin for repair if knob...

Page 56: ...required Verify the electrical bond following procedure in Section 4 5 4 To ensure GMU 44 performance is not compromised by magnetized surrounding structure perform the Magnetic Interference Check in...

Page 57: ...e Airbus Helicopters Standard Procedures Manual MTC and using materials specified in Section 20 01 01 Overseal bond areas per 20 02 07 Refer to P N 190 02081 01 for more details Table 4 3 Repaired Ele...

Page 58: ...the servo output arm ensuring the torque wrench drive is square to the arm NOTE The 117 01080 output arm has a square hole as well as 1 125 flats both of which can be used to couple with a torque wre...

Page 59: ...on either side of the P N 117 01080 XX arm and that the Belleville washers are stacked as depicted Use new Belleville washers when performing the reset procedure NOTE Optional washer maybe necessary...

Page 60: ...ve into the square hole in the servo output arm Use a extension bar if desired Ensure the wrench drive is perpendicular to servo output arm and the output arm movement is not restricted by the wrench...

Page 61: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 4 12 Figure 4 2 Shear Fuse Installation...

Page 62: ...er to Appendix A of this document retained in the aircraft permanent records for a list of the interfaced equipment and system configuration data When troubleshooting the GFC 600H FCS refer to wire ro...

Page 63: ...witch to the GMC 605H and GFS 83 Ensure all post installation calibration procedures Section 7 7 have been successfully completed GMC 605H display is blank Ensure the system is powered Ensure the GMC...

Page 64: ...of calibration Press FTR This will reset the reference to the current attitude This should not be used as an initial troubleshooting step as it may not resolve the primary reason for the out of detent...

Page 65: ...may be due to an internal failure loss of AHRS data inputs or the servos are exceeding their engagement limits Refer to Table 5 3 for troubleshoot procedures Annunciated Fault Possible Cause Correctiv...

Page 66: ...U 44 in accordance with Section 5 3 Contact Garmin ADC FAIL Air Data inputs have failed Ensure the GMC 605H and GSU 75H connectors are securely mated to the units Ensure wiring is correct Ensure the p...

Page 67: ...FEST One or more of the GFC 600H units is not reporting the expected software and or gains version to the GMC 605H Power cycle the GFC 600H FCS by cycling the FCS circuit breaker Reload software in ac...

Page 68: ...FAILED AIRCRAFT IN MOTION Rotorcraft is moving GMC 605H is being subjected to excessive vibration The GMC 605H is not receiving valid GPS or Air Data An internal error has occurred with the GMC 605H...

Page 69: ...ds Appendix A Power cycle the GFC 600H FCS by cycling the FCS circuit breaker Reload software in accordance with Section 3 3 1 Contact Garmin If message persists replace the GMC 605H unit Refer to Sec...

Page 70: ...MPLETED FAST ENOUGH TOO MANY STATIONS AROUND COMPASS ROSE NOT ENOUGH N E S W STATION DATA COMPUTED MAGNETIC OFFSETS ARE TOO LARGE SITE DOESN T HAVE UNIFORM MAGNETIC FIELD SITE MAG FIELD DIFFERENT FROM...

Page 71: ...e GMU 44 Ensure that an electronic device has NOT become grounded through the aircraft structure instead of the proper ground wire especially if the ground return path through the aircraft structure p...

Page 72: ...view of the sky Ensure the GRS 79H or GSU 75H is not subject to excessive vibration Rerun procedure Timeout occurred while starting procedure name AHRS did not respond for test procedure before inter...

Page 73: ...S 79H or GSU 75H internal calibration error Return unit to Garmin Refer to Section 6 3 for removal procedures Pitch roll offset calibration not done Complete pitch roll calibration and then retry proc...

Page 74: ...light log before timing out Cycle power on the sensor and retry download Flight Log download was not successful Download directory is invalid Download Location is not valid to save file Ensure the Dow...

Page 75: ...the LRU TSO installation manuals for more detailed signal information on each LRU All D Sub connectors follow a similar pin numbering scheme as shown below 5 4 1 GMC 605H The GMC 605H has two high de...

Page 76: ...55 RS 485 3B I O 17 DISC IN 1 IN 56 CONFIG DISC IN 3 IN 18 CONFIG DISC IN 13 IN 57 CONFIG DISC IN 5 IN 19 CAN TERM 2 58 CONFIG DISC IN 26 IN 20 CAN HI 2 I O 59 CONFIG DISC IN 25 IN 21 ARINC 429 IN 3 H...

Page 77: ...T DIRECTOR LEFT OUT 55 FLIGHT DIRECTOR UP OUT 17 LIGHTING BUS HI IN 56 VERTICAL DEV DOWN IN 18 ETHERNET IN 3B IN 57 VERTICAL DEV UP IN 19 ETHERNET IN 3A IN 58 LATERAL DEV RIGHT IN 20 ETHERNET OUT 3A O...

Page 78: ...p to determine the required servo functionality The servo will not read the strap or pass functional checks until the strapping configuration is saved in configuration Ref Des Description CONN P N Kit...

Page 79: ...75H The GSU 75H has one high density 78 pin d sub connector Note that the GTP 59 OAT Probe does not have a connector shown since it is pinned directly into the GSU 75H connector Figure 5 4 GSU 75H J7...

Page 80: ...RCRAFT PWR 1 IN 53 CONFIG MODULE PWR OUT 15 SIGNAL GND 54 CONFIG MODULE DATA I O 16 AIRCRAFT PWR 2 IN 55 CONFIG MODULE CLOCK OUT 17 RS 232 OUT ADC 2 OUT 56 DISCRETE IN 1 IN 18 RS 232 IN ADC 2 IN 57 SY...

Page 81: ...age 5 20 5 4 4 GSU 79H The GSU 79H has one high density 78 pin d sub connector Figure 5 5 GSU 79H J791 Connector View looking at back of GSU 79H Ref Des Description CONN P N Kit P N P791 Conn HiDen D...

Page 82: ...AHRS 1 IN 14 AIRCRAFT PWR 1 IN 53 CONFIG MODULE PWR OUT 15 SIGNAL GND 54 CONFIG MODULE DATA I O 16 AIRCRAFT PWR 2 IN 55 CONFIG MODULE CLOCK OUT 17 RESERVED 56 DISCRETE IN 1 IN 18 RESERVED 57 SYS ID PR...

Page 83: ...ector Figure 5 6 GMU 44 J441 Pigtail Connector Table 5 14 J441 Connector Pinout Ref Des Description CONN P N Kit P N P441 Conn Circular Female 9 ckt 330 00360 00 011 00871 00 Pin Function I O 1 SIGNAL...

Page 84: ...as one 6 pin connector Figure 5 7 GMU 44B Connector Table 5 15 J442 Connector Pinout Ref Des Description CONN P N Kit P N P442 Conn Pigtail Female 9 ckt 330 01430 01 011 04205 00 Pin Function I O 1 SH...

Page 85: ...nector as the GMU 44B which has one 6 pin connector Figure 5 8 Collective Position Sensor P6053 Connector Table 5 16 P6053 Connector Pinout Ref Des Description CONN P N Kit P N J6053 Conn Kit String P...

Page 86: ...d rotorcraft metallic structure Resistance must be verified using calibrated milliohm meter For electrical equipment the wiring harness must be disconnected during measurement Electrical bonding of me...

Page 87: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 2 Figure 6 1 Location of GFC 600H System Components...

Page 88: ...de Controller NOTE GMC 605H must be calibrated if unit mounting rack has moved or any of its fasteners were loosened Removal and re installation of the same GMC 605H no change to serial number without...

Page 89: ...ism is correct by inserting a 3 32 hex drive tool into the access hole at the bottom of the face of the unit and turning the tool counterclockwise until if fully stops 1 Visually inspect the connector...

Page 90: ...2 UNJF 3B 2 22 MS20470AD4 3 RIVET SOLID UNIVERSAL HEAD 0 125 IN X 0 188 IN LONG 6 21 MS20470AD3 3 RIVET SOLID UNIVERSAL HEAD 3 32 IN X 3 16 IN LONG 16 20 MS20426AD3 3 RIVET SOLID COUNTERSUNK 100 PRECI...

Page 91: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 6 Figure 6 3 GFS 83 Pitch and Roll Servo Installation...

Page 92: ...UNF 3A 13 16 IN GRIP DRILLED SHANK CRES 1 12 AN320 4 NUT PLAIN CASTELLATED SHEAR STEEL 1 4 28 UNF 3B 4 11 AN3H5A BOLT MACHINE AIRCRAFT 1900 32 UNF 3A 1 4 IN GRIP DRILLED HEAD 2 10 AN3 3A BOLT MACHINE...

Page 93: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 8 Figure 6 4 GFS 83 Yaw Servo Installation...

Page 94: ...the helicopter control linkage system Refer to Figure 6 3 and Figure 6 4 for details Re installation WARNING Before connecting the control push rod linkage verify that the servo output arm is oriente...

Page 95: ...l push rod may require that rotorcraft controls are moved into position See Airbus Aircraft Maintenance Manual task 29 00 00 2 1 for instructions on connecting and disconnecting hydraulic ground power...

Page 96: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 11 Figure 6 5 Pitch Control Push Rod Adjustment...

Page 97: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 12 Figure 6 6 Roll Control Push Rod Adjustment...

Page 98: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 13 Figure 6 7 Yaw Control Push Rod Adjustment...

Page 99: ...ion NOTE If necessary it may be beneficial to accomplish the re installation steps of Section 6 2 4 for the servo output arm and Section 6 2 3 for the shear fuse while the servo is attached to the bra...

Page 100: ...re 6 8 for details of the shear fuse installation Removal 1 If necessary gain access to the shear fuse by rotating the servo output arm around until the shear fuse is visible If the shear fuse is brok...

Page 101: ...rm NOTE Ensure that the steps of Section 6 2 1 for the control rod linkage removal and Section 6 2 3 for the shear fuse removal have been completed prior to beginning removal of the servo output arm a...

Page 102: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 17 Figure 6 9 Yaw Clutched Servo Output Arm and Shear Fuse Installation...

Page 103: ...shaft keyways CAUTION Ensure the arm is oriented as required for a particular control axis roll servo and yaw servo arms point up pitch servo arm points down Refer to Figure 6 5 Figure 6 6 or Figure 6...

Page 104: ...5H must be recalibrated if the GSU 75H mounting rack or support shelf was re moved or had the fasteners loosened Removal and re installation of the same GSU 75H unit only same serial number without di...

Page 105: ...r Beam Y398 5 RH Refer to Figure 6 10 for details 2 Inspect GSU 75H mounting rack and ensure it is securely fastened to GSU 75H support shelf Ensure the shelf and remote rack are securely installed to...

Page 106: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 21 Figure 6 11 Pitot and Static Connections...

Page 107: ...H must be recalibrated if the GRS 79H mounting rack or support shelf was re moved or had the fasteners loosened Removal and re installation of the same GRS 79H unit only same serial number without dis...

Page 108: ...ure it is securely fastened to existing Center Beam Y398 5 LH Refer to Figure 6 12 for details 2 Inspect GRS 79H mounting rack and ensure it is securely fastened to GRS 79H support shelf Ensure the sh...

Page 109: ...ctrical components or ferrous materials within 10 feet of the GMU 44 will require recalibration of the AHRS units NOTE Do not use magnetic tipped tools for servicing the magnetometer The GMU 44 is ins...

Page 110: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 25 Figure 6 13 GMU 44 Installation on Existing Flux Valve Support GMU 44 shown GMU 44B similar...

Page 111: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 26 Figure 6 14 GMU 44 Installation with Universal Mount GMU 44 shown GMU 44B similar...

Page 112: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 27 Figure 6 15 GMU 44B Installation...

Page 113: ...remaining magnetic effect can be compensated for during calibration of the GMU 44 NOTE The GMU 44 is fastened with brass screws that include a nylon locking patch Garmin P N 211 60037 08 When reusing...

Page 114: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 29 6 6 GTP 59 OAT Probe Figure 6 16 GTP 59 OAT Probe Installation...

Page 115: ...probe and probe doubler Replace the probe if damaged 2 Place the GTP 59 through the hole in existing ADF mount and reinforcing doubler 3 Slide the self sealing washer and install the skirt nut as show...

Page 116: ...kewise do not pull the steel cable beyond its maximum extension length of 2 inch limit as it will damage the sensor Tension must be maintained on the cable at all times NOTE See the GMC 605 Installati...

Page 117: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 32 Figure 6 17 Collective Position Sensor...

Page 118: ...190 02081 03 GFC 600H HFCS Part 27 STC Maintenance Manual Rev 3 Page 6 33 Figure 6 18 Collective Position Sensor Adjustment...

Page 119: ...g replacement sensor the collective pitch control must be in the down position to allow for adjustment of cable length in retracted position The sensor cable must be extended by a minimum of 0 2 inche...

Page 120: ...circuit breaker and remove the GMC 605H per Figure 6 1 2 Disconnect the J6052 connector from the GMC 605H backplate by removing the two screws 3 Remove the backshell cover item 7 from the J6052 by un...

Page 121: ...1 5 Remove the screw item 10 securing the configuration module item 1 to the backshell item 6 6 Lift the configuration module item 1 out of the backshell item 6 and disconnect the wiring harness item...

Page 122: ...75H GMU 44 Heading Offset Calibration 7 19 7 7 6 Site Evaluation of Magnetic Disturbances 7 19 7 7 7 Run Up Vibration Check GSU 75H OR GRS 79H Only 7 20 7 8 GFC 600H System Configuration 7 21 This se...

Page 123: ...to Section 1 for pre flight and functional check of the GMC 605H If the GMC 605H mounting rack WAS removed or its fasteners loosened the GMC 605H internal AHRS must be recalibrated in accordance with...

Page 124: ...guration module is re installed original equipment no configuration is required NOTE Verify the installed software and gains versions are exactly as documented in the rotorcraft permanent records No s...

Page 125: ...full range of motion i e from stop to stop and select STOP 8 Verify that the range calibration was successful Method B NOTE Method B does not require the controls to be moved through their full range...

Page 126: ...e HDG button when CONT is displayed on the GMC 605H 3 Navigate to the GFC COLL SNSR page 4 Using the scroll wheel highlight START under the BEGIN CALIBRATION and press the VS key 5 Move the collective...

Page 127: ...efer to Section 7 7 Verify the installed software versions match the rotorcraft permanent records 7 4 1 Pitot Static Leak Air Data Check Procedures The checks in this section only need to be performed...

Page 128: ...perating altitude or service ceiling Table 7 1 Airspeed Test Points Notes 1 If available the aircraft or instrument manufacturer s data should be referenced for standby tolerances 5 Decrease the indic...

Page 129: ...module is used software and configuration as detailed in the rotorcraft permanent records Appendix A must be loaded and the GSU 75H AHRS must be recalibrated refer to Section 7 7 Verify the installed...

Page 130: ...if rack or its fasteners are loosened NOTE Repeat of the GMC 605H or GRS 79H or GSU 75H Pitch Roll Offset Procedure requires a repeat of the Magnetometer Calibration and Heading Offset Calibration NO...

Page 131: ...n 7 7 5 GMC 605H was removed original unit and the mounting rack was NOT removed and or loosened No GMC 605H was removed original unit and the mounting rack WAS removed and or loosened Yes No No Yes Y...

Page 132: ...lect each step when complete so that a green checkmark appears next to the selection a On the GMC 605H scroll through each of the pitch roll calibration pages following the instructions on each page t...

Page 133: ...applicable informs the operator if the installation has passed or failed the Magnetometer Interference Test 9 If the test passes no further action is required If the check fails the installation is c...

Page 134: ...t Begins Calibration Period no activity permitted 00 20 Calibration Period Ends Cyclic Full Right 00 30 Cyclic Full Left 00 40 Cyclic Full Forward 00 50 Cyclic Full Back 01 00 Cyclic Centered 01 10 Co...

Page 135: ...ect the desired AHRS unit to calibrate from the AHRS Unit selection 6 Complete the Before Calibration steps listed on the display Select each step when complete so that a green checkmark appears next...

Page 136: ...pass rose at a heading of 360 5 Magnetic North or select a level magnetically clean location and use a calibrated sight compass a The rotorcraft must be positioned to enable clockwise turning around t...

Page 137: ...happens more than once for a given station A minimum of two 2 successful stations per quadrant is required where a successful station is a full 18 second countdown followed by instruction to move Ensu...

Page 138: ...rd 9 Calculate the heading errors by subtracting the displayed B value from the actual A value for each of the headings If each heading displayed on the PFD or PFD 1 and PFD 2 is at or within 3 of the...

Page 139: ...l Heading A Displayed PFD Heading B Heading Error A B GMC 605H Heading Standby Compass Heading 360 North 30 60 90 East 120 150 180 South 210 240 270 West 300 330 Actual Heading A Displayed PFD Heading...

Page 140: ...bances If the evaluation of an existing compass rose indicates that magnetic disturbances are present an alternative location must be found to perform the magnetometer calibration procedure A G500H TX...

Page 141: ...Select Test to begin the procedure 5 Follow the on screen commands except rotorcraft execute the Run up Check at ground idle If failures are indicated on the GDU the engine run up check may be repeate...

Page 142: ...ssing the VS button to accept the value the new value is stored in the configuration module at that time Refer to Section 3 3 for a description of the GMC 605H Configuration mode and how to navigate t...

Page 143: ...heckout applicable to any GFC 600H system component that was removed replaced and installed must be performed as described in Section 1 before return to service functional checks All system failure al...

Page 144: ...Other relevant rotorcraft maintenance information Verify that replacement LRUs software versions match those in the rotorcraft permanent records in Appendix A 8 2 Configuration Mode Functional Checkou...

Page 145: ...e text 5 Verify the following sequence of events during PFT The yellow LEDs are illuminated momentarily followed by the red LEDs being illuminated momentarily next to the FCS key on the GMC 605H A nor...

Page 146: ...ow until removed on the GDU After 5 seconds all FCS annunciations should be removed from the PFD and GMC 605H 6 Re engage the system by pressing the FTR FCS ENG pilot cyclic switch 7 Verify the follow...

Page 147: ...ht should illuminate green 4 Press and hold FTR FCS ENG Slowly move the cyclic and pedals systematically through the full range of control First move pitch fore aft followed by roll left right Likewis...

Page 148: ...air data test set to 3000 feet altitude and 65 knots airspeed 3 Allow the air data test set to stabilize at the target altitude and airspeed 4 Lift the collective to approximately 50 5 Rotate the head...

Page 149: ...m the system enters low speed protection In this mode of operation the active mode on the GMC and GDU will show IAS with a reference of 45 KTS If the system does not immediately enter low speed protec...

Page 150: ...on the CDI toward the simulated VOR bearing until the course pointer is within approximately 5 of the rotorcraft heading 14 Verify the following annunciations and displays are present A flashing VOR i...

Page 151: ...pment 12 Verify the following annunciations and displays A flashing LOC is displayed in place of HDG on the GMC 605H for approximately 3 seconds then stops flashing A flashing green LOC is displayed o...

Page 152: ...the CDI is centered 5 Press the NAV key on the GMC 6 Verify the following annunciations and displays GPS is displayed on the GMC 605H GPS P R and CPLD are displayed in green text on the PFD 7 Verify...

Page 153: ...2 2 Other Equipment A 4 A 3 Configuration Log A 5 A copy of this appendix must be used to record information for a specific installation of the GFC 600H system and maintained with the rotorcraft perma...

Page 154: ..._______________________ Aircraft Serial ______________________________ Aircraft Reg ______________________________ Unit Part Number Serial Number Mod Level GMC 605H 011 02967 ______ GFS 83 Pitch 011 0...

Page 155: ...equipment installed in the rotorcraft The GFC 600H FCS interfaces to all equipment listed in Table A 1 are covered by this STC Refer to installation specific interconnect diagrams retained with the ro...

Page 156: ...Installation Manual P N 190 02081 00 to determine whether interfaces between the GFC 600H FCS and the equipment listed in Table A 2 are approved by this STC In the Notes column record the external LR...

Page 157: ...Yes GI 285 No Yes HSI DG No GDU KI525 SYS INSTALL Page 2 3 FLT DIR No GDU GPS ROLSTR No Yes GPS DEV ANGULR LINEAR VNAV No Yes SYS INSTALL Page 3 3 COL SNSR NONE LVDT POT GMC DSP BACKLIGHT Page SOURCE...

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