Maintenance Manual
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Number: 190-01277-A3 Rev. 1 Garmin International, Inc. 1200 E. 151st Street Olathe, Kansas 66062 USA 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page A System Maintenance Manual GRA 55/5500 Bell 206 STC as installed in Bell 206B, 206L Series Reg. No. S/N Contains Instructions for Continued Airworthiness for Bell 206 STC Dwg.
Number: 190-01277-A3 Rev. 1 Garmin International, Inc. 1200 E. 151st Street Olathe, Kansas 66062 USA 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page A System Maintenance Manual GRA 55/5500 Bell 206 STC as installed in Bell 206B, 206L Series Reg. No. S/N Contains Instructions for Continued Airworthiness for Bell 206 STC Dwg.
Maintenance Manual
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... without first obtaining an export license. Visit the Garmin web site (www.garmin.com) for the particular operation. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page i CAUTION Cautions are used to bring to the installer's immediate attention that damage to equipment may result...information in this document. A violation of the EAR may be exported, released, or disclosed to foreign nationals inside or outside of Garmin products. NOTE Notes are used to alert the individual that not only damage to $1,000,000 under Section 2410 of the Export ...
... without first obtaining an export license. Visit the Garmin web site (www.garmin.com) for the particular operation. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page i CAUTION Cautions are used to bring to the installer's immediate attention that damage to equipment may result...information in this document. A violation of the EAR may be exported, released, or disclosed to foreign nationals inside or outside of Garmin products. NOTE Notes are used to alert the individual that not only damage to $1,000,000 under Section 2410 of the Export ...
Maintenance Manual
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... 3-8 4 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 4-1 4.1 Servicing Information ...4-1 4.2 Periodic Maintenance ...4-1 4.3 Special Tools ...4-1 4.4 Maintenance Intervals ...4-2 5 TROUBLESHOOTING INFORMATION 5-1 5.1 GRA 55/5500 General Troubleshooting 5-1 6 REMOVAL AND REPLACEMENT INFORMATION 6-1 6.1 Unit Installation ...6-1 6.1.1 Installation Procedure 6-1 6.1.2 Removal Procedure 6-1 6.2 Rack Installation ...6-1 6.2.1 Installation Procedure 6-1 6.2.2 Removal Procedure 6-1 6.3 Antenna Installation ...6-1 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page ii
... 3-8 4 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 4-1 4.1 Servicing Information ...4-1 4.2 Periodic Maintenance ...4-1 4.3 Special Tools ...4-1 4.4 Maintenance Intervals ...4-2 5 TROUBLESHOOTING INFORMATION 5-1 5.1 GRA 55/5500 General Troubleshooting 5-1 6 REMOVAL AND REPLACEMENT INFORMATION 6-1 6.1 Unit Installation ...6-1 6.1.1 Installation Procedure 6-1 6.1.2 Removal Procedure 6-1 6.2 Rack Installation ...6-1 6.2.1 Installation Procedure 6-1 6.2.2 Removal Procedure 6-1 6.3 Antenna Installation ...6-1 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page ii
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TABLE OF CONTENT CONTINUED 6.3.1 Installation Procedure 6-1 6.3.2 Removal Procedure 6-2 7 RETURN TO SERVICE PROCEDURE 7-1 7.1 Return to Service ...7-1 7.2 Maintenance Records ...7-1 8 LIMITATIONS AND ADDITIONAL REQUIREMENTS 8-1 8.1 Diagrams ...8-1 8.2 Special Inspection Requirements 8-1 8.3 Application of ...and Distribution 8-1 8.8 Assistance ...8-1 8.9 Implementation and Record Keeping 8-2 9 AIRWORTHINESS LIMITATIONS SECTION 9-1 APPENDIX A AIRCRAFT SPECIFIC INFORMATION A-1 A.1 Weight and Balance ...A-5 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page iii
TABLE OF CONTENT CONTINUED 6.3.1 Installation Procedure 6-1 6.3.2 Removal Procedure 6-2 7 RETURN TO SERVICE PROCEDURE 7-1 7.1 Return to Service ...7-1 7.2 Maintenance Records ...7-1 8 LIMITATIONS AND ADDITIONAL REQUIREMENTS 8-1 8.1 Diagrams ...8-1 8.2 Special Inspection Requirements 8-1 8.3 Application of ...and Distribution 8-1 8.8 Assistance ...8-1 8.9 Implementation and Record Keeping 8-2 9 AIRWORTHINESS LIMITATIONS SECTION 9-1 APPENDIX A AIRCRAFT SPECIFIC INFORMATION A-1 A.1 Weight and Balance ...A-5 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page iii
Maintenance Manual
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...Page ...3-7 GRA 55/5500 Installation 6-2 Rack Installation 6-3 GRA 55/5500 Antenna Installation 6-3 GRA STC Equipment Fuselage Station Location for Bell 206 A-1 GRA STC Equipment Fuselage Station Location for Bell 206L Series A-1 GRA 55/5500 Unit and Rack Installation in Bell ...GRA 55/5500 Unit Location and Moment Arm in the Bell 206B, 206L Series ......... Figure 3-1. Figure 3-2. Figure A-3. Figure 3-3. Figure A-1. Figure A-6. A-5 Bell 206B LRU and Antenna Locations A-6 Bell 206L Series LRU and Antenna Locations A-7 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55...
...Page ...3-7 GRA 55/5500 Installation 6-2 Rack Installation 6-3 GRA 55/5500 Antenna Installation 6-3 GRA STC Equipment Fuselage Station Location for Bell 206 A-1 GRA STC Equipment Fuselage Station Location for Bell 206L Series A-1 GRA 55/5500 Unit and Rack Installation in Bell ...GRA 55/5500 Unit Location and Moment Arm in the Bell 206B, 206L Series ......... Figure 3-1. Figure 3-2. Figure A-3. Figure 3-3. Figure A-1. Figure A-6. A-5 Bell 206B LRU and Antenna Locations A-6 Bell 206L Series LRU and Antenna Locations A-7 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55...
Maintenance Manual
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...Instructions for Continued Airworthiness for the Bell 206B, 206L, L-1, L-3, and L-4 rotorcraft, modified by the agency installing the Garmin GRA 55/5500 radar altimeter system under the GRA 55/5500 STC. ICA:Instructions for Continued Airworthiness 10. ODA:Organization Designation Authorization 13. RX:Receive 16. LRU:Line...requirements of 14 CFR §27.1529, and Part 27 Appendix A. TX:Transmit 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 1-1 This permission does not construe suitability of Federal Regulations 6. NAV:Navigation 12. PMI:Principal ...
...Instructions for Continued Airworthiness for the Bell 206B, 206L, L-1, L-3, and L-4 rotorcraft, modified by the agency installing the Garmin GRA 55/5500 radar altimeter system under the GRA 55/5500 STC. ICA:Instructions for Continued Airworthiness 10. ODA:Organization Designation Authorization 13. RX:Receive 16. LRU:Line...requirements of 14 CFR §27.1529, and Part 27 Appendix A. TX:Transmit 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 1-1 This permission does not construe suitability of Federal Regulations 6. NAV:Navigation 12. PMI:Principal ...
Maintenance Manual
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... of the aircraft by the installation of the Garmin GRA 55/5500 Part 27 STC. 1.7.1 Applicability Applies to aircraft altered by the installation of the Garmin GRA 55/5500 Part 27 STC. 1.7.2 Definition of Abbreviations See Section 1.5 and Section 1.6. 1.7.3 Precautions None. 1.7.4 Units of measurement None. 1.7.5 Referenced publications (or their later revisions) 1. Electrical Standard Practices Manual for Bell Model 206...
... of the aircraft by the installation of the Garmin GRA 55/5500 Part 27 STC. 1.7.1 Applicability Applies to aircraft altered by the installation of the Garmin GRA 55/5500 Part 27 STC. 1.7.2 Definition of Abbreviations See Section 1.5 and Section 1.6. 1.7.3 Precautions None. 1.7.4 Units of measurement None. 1.7.5 Referenced publications (or their later revisions) 1. Electrical Standard Practices Manual for Bell Model 206...
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... shelf. GRA 55/5500 Block Diagram System Maintenance Manual GRA 55/5500 Bell 206 STC Page 2-1 The GRA 55/5500 radar altimeter may also integrate with the approved radar altimeter antennas. The system requires a 5 Amp minimum circuit breaker installed on center using approved antenna mounts installed via STC...functionality. The two approved radar altimeter antennas are compatible with an installed Garmin GTN 6XX/7XX for the purpose of providing the optional 50 ft callout as summarized below. The GRA 55/5500 radar altimeter system features: two antenna architecture for transmitting ...
... shelf. GRA 55/5500 Block Diagram System Maintenance Manual GRA 55/5500 Bell 206 STC Page 2-1 The GRA 55/5500 radar altimeter may also integrate with the approved radar altimeter antennas. The system requires a 5 Amp minimum circuit breaker installed on center using approved antenna mounts installed via STC...functionality. The two approved radar altimeter antennas are compatible with an installed Garmin GTN 6XX/7XX for the purpose of providing the optional 50 ft callout as summarized below. The GRA 55/5500 radar altimeter system features: two antenna architecture for transmitting ...
Maintenance Manual
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... computer USB-A receptacle and the GRA 55/5500 USB-B receptacle installed in the tool's installation directory for download from the Dealer Resource Center portion of the Garmin website (www.garmin.com). Click the "Close" button to close the setup wizard. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-1 3 GRA 55/5500 CONTROL AND OPERATION 3.1 Control...
... computer USB-A receptacle and the GRA 55/5500 USB-B receptacle installed in the tool's installation directory for download from the Dealer Resource Center portion of the Garmin website (www.garmin.com). Click the "Close" button to close the setup wizard. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-1 3 GRA 55/5500 CONTROL AND OPERATION 3.1 Control...
Maintenance Manual
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... can be necessary to the GRA 55/5500 2. Figure 3-1. Installation Tool Page Tabs 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-2 3.3 Using the GRA 55/5500 Retrofit Installation Tool Once the GRA 55/5500 Retrofit Installation Tool has been installed: 1. The connection status in the target installation directory selected during installation. Start the GRA 55/5500 Retrofit Installation Tool from the provided...
... can be necessary to the GRA 55/5500 2. Figure 3-1. Installation Tool Page Tabs 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-2 3.3 Using the GRA 55/5500 Retrofit Installation Tool Once the GRA 55/5500 Retrofit Installation Tool has been installed: 1. The connection status in the target installation directory selected during installation. Start the GRA 55/5500 Retrofit Installation Tool from the provided...
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3.4.3 Software Page The software page (Figure 3-4) provides a list of currently installed software regions on the GRA 55/5500 as well as an interface to load new software regions to the unit. Figure 3-4. Software Page 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-5
3.4.3 Software Page The software page (Figure 3-4) provides a list of currently installed software regions on the GRA 55/5500 as well as an interface to load new software regions to the unit. Figure 3-4. Software Page 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-5
Maintenance Manual
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... the unit. During the calibration procedure, the GRA 55/5500 Retrofit Installation Tool will be performed to the connected GRA 55/5500. A visual inspection must be completely installed and mounted in the status bar area indicates "0 ft" and "Normal," the unit has been successfully calibrated. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-8
... the unit. During the calibration procedure, the GRA 55/5500 Retrofit Installation Tool will be performed to the connected GRA 55/5500. A visual inspection must be completely installed and mounted in the status bar area indicates "0 ft" and "Normal," the unit has been successfully calibrated. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-8
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...corrosion and apparent signs of wire installation. 5. Ensure that they are in full contact with unit mounting rack and re-torque 20 to GRA unit support structure is found , treat affected areas in accordance with BHT-206-SRM-1 Structural Repair Manual, Revision 3, or later approved .... 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-4 Check for security of attachment, including visual inspection of the mounting rack and rotorcraft support structure to ensure continued integrity of the installation in alignment with Bell 206B, 206L series maintenance...
...corrosion and apparent signs of wire installation. 5. Ensure that they are in full contact with unit mounting rack and re-torque 20 to GRA unit support structure is found , treat affected areas in accordance with BHT-206-SRM-1 Structural Repair Manual, Revision 3, or later approved .... 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-4 Check for security of attachment, including visual inspection of the mounting rack and rotorcraft support structure to ensure continued integrity of the installation in alignment with Bell 206B, 206L series maintenance...
Maintenance Manual
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...If nutplates are secured with Bell Specification BHT-ELEC-SPM CHP 8. Re-install using approved solvents and methods per methods specified in BHT-ELEC-SPM CHP 8. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-5 Verify that are used in accordance with... Bell Test - Any reworked antenna installation shall have a resistance of conductive aircraft structure (i.e. Remove one each mounting screw from...
...If nutplates are secured with Bell Specification BHT-ELEC-SPM CHP 8. Re-install using approved solvents and methods per methods specified in BHT-ELEC-SPM CHP 8. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-5 Verify that are used in accordance with... Bell Test - Any reworked antenna installation shall have a resistance of conductive aircraft structure (i.e. Remove one each mounting screw from...
Maintenance Manual
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...the antenna is cracked, or deformed, the internal structure must be performed in good condition. Inspect aircraft skin around first. installed antenna: 1. suspected lightning 2. Interval To be replaced. Verify that all sealing fillets around the antenna are not loose. ...the aircraft skin is broken, cracked, or dented it must also be inspected for applicable repairs. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-6 Verify that antenna fasteners are in In the event attachment is not deformed. 3. Clean the exterior of...
...the antenna is cracked, or deformed, the internal structure must be performed in good condition. Inspect aircraft skin around first. installed antenna: 1. suspected lightning 2. Interval To be replaced. Verify that all sealing fillets around the antenna are not loose. ...the aircraft skin is broken, cracked, or dented it must also be inspected for applicable repairs. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-6 Verify that antenna fasteners are in In the event attachment is not deformed. 3. Clean the exterior of...
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... 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-1 Table 5-1. No internal or comprehensive unit troubleshooting is larger/smaller than allowable frequencies Improper antenna connections Check antenna installation and all cable connections and retry calibration....the GRA 55/5500 Retrofit Installation Tool as described in the following sections. GRA 5500 Fault Descriptions Fault Type Fault Name Configuration N/A Zero-Foot Lock Calibration Zero-Foot Cal Description Cause Resolution GRA HW Revision Update software to Garmin for the Garmin GRA 55/5500...
... 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-1 Table 5-1. No internal or comprehensive unit troubleshooting is larger/smaller than allowable frequencies Improper antenna connections Check antenna installation and all cable connections and retry calibration....the GRA 55/5500 Retrofit Installation Tool as described in the following sections. GRA 5500 Fault Descriptions Fault Type Fault Name Configuration N/A Zero-Foot Lock Calibration Zero-Foot Cal Description Cause Resolution GRA HW Revision Update software to Garmin for the Garmin GRA 55/5500...
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... run during Power On Self-Test (POST). Cycle power to unit. If fault persists, return unit to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-2 Failure of the PLL register values does not match what was sent from...Garmin for service. Fault Type Fault Name PLL Register RF Self-Test POST (Power On Self-Test) Sensor Boot Various [1] Description Cause Resolution After programming, read-back of these tests is not within the acceptable frequency range Improper antenna connections Internal failure Check antenna installation ...
... run during Power On Self-Test (POST). Cycle power to unit. If fault persists, return unit to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-2 Failure of the PLL register values does not match what was sent from...Garmin for service. Fault Type Fault Name PLL Register RF Self-Test POST (Power On Self-Test) Sensor Boot Various [1] Description Cause Resolution After programming, read-back of these tests is not within the acceptable frequency range Improper antenna connections Internal failure Check antenna installation ...
Maintenance Manual
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... unit. Cycle power to Garmin for diagnosis. Note there are no assert log entries for diagnosis. If fault persists, return unit to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-6 Check antenna installation and all cable connections. ...If fault persists, return unit to Garmin for service. The LO PLL is not locked...
... unit. Cycle power to Garmin for diagnosis. Note there are no assert log entries for diagnosis. If fault persists, return unit to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-6 Check antenna installation and all cable connections. ...If fault persists, return unit to Garmin for service. The LO PLL is not locked...
Maintenance Manual
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...Installed unit location is too hot/ cold RF board temperature greater than 100° C or less than -60° C Internal failure Resolution Return unit to qualified temperature range as specified in Environmental Qualification Form (EQF). If fault persists, return unit to Garmin for identification. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55.../5500 Bell 206 STC Page 5-7 Return unit to Garmin for service. [1] Fault can be found in the ...
...Installed unit location is too hot/ cold RF board temperature greater than 100° C or less than -60° C Internal failure Resolution Return unit to qualified temperature range as specified in Environmental Qualification Form (EQF). If fault persists, return unit to Garmin for identification. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55.../5500 Bell 206 STC Page 5-7 Return unit to Garmin for service. [1] Fault can be found in the ...
Maintenance Manual
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....44 Figure A-5. For additional details refer to include the coaxial cable installation for the GRA 55/5500 system, to the GRA 55/5500 installation manual. GRA 55/5500 WIRING HARNESS WL 0.00 REF. GRA 55/5500 Wire Routing in the Bell 206B, 206L Series 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page A-4 Due to aircraft configurations, minor deviations...
....44 Figure A-5. For additional details refer to include the coaxial cable installation for the GRA 55/5500 system, to the GRA 55/5500 installation manual. GRA 55/5500 WIRING HARNESS WL 0.00 REF. GRA 55/5500 Wire Routing in the Bell 206B, 206L Series 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page A-4 Due to aircraft configurations, minor deviations...