Maintenance Manual
Page 5
... change without first obtaining an export license. A violation of the EAR may occur if the instruction is subject to foreign nationals inside or outside of the reason for current updates and supplemental information concerning the operation of Garmin products. 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...
... change without first obtaining an export license. A violation of the EAR may occur if the instruction is subject to foreign nationals inside or outside of the reason for current updates and supplemental information concerning the operation of Garmin products. 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...
Maintenance Manual
Page 6
... 3.1 Control, Operating, and Testing Information 3-1 3.2 Downloading and Installing the GRA 55/5500 Retrofit Installation Tool 3-1 3.3 Using the GRA 55/5500 Retrofit Installation Tool 3-2 3.4 Installation Tool Pages ...3-2 3.4.1 Status Page ...3-3 3.4.2 Configuration Page 3-4 3.4.3 Software Page ...3-5 3.4.4 Diagnostics Page ...3-6 3.4.5 Utilities Page ...3-7 3.4.6 Zero-Foot Calibration 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...
... 3.1 Control, Operating, and Testing Information 3-1 3.2 Downloading and Installing the GRA 55/5500 Retrofit Installation Tool 3-1 3.3 Using the GRA 55/5500 Retrofit Installation Tool 3-2 3.4 Installation Tool Pages ...3-2 3.4.1 Status Page ...3-3 3.4.2 Configuration Page 3-4 3.4.3 Software Page ...3-5 3.4.4 Diagnostics Page ...3-6 3.4.5 Utilities Page ...3-7 3.4.6 Zero-Foot Calibration 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...
Maintenance Manual
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... ...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 Protective Treatments 8-1 8.4 Data Relative to Structural Fasteners 8-1 8.5 Additional Instructions ...8-1 8.6 Overhaul Period ...8-1 8.7 ICA Revision 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...
... ...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 Protective Treatments 8-1 8.4 Data Relative to Structural Fasteners 8-1 8.5 Additional Instructions ...8-1 8.6 Overhaul Period ...8-1 8.7 ICA Revision 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...
Maintenance Manual
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... Garmin GRA55/5500 system as installed by this document: 1. ACO:Aircraft Certification Office 2. AEG:Aircraft Evaluation Group 3. ICA:Instructions for approval. ODA:Organization Designation Authorization 13. PMI:Principal Maintenance Inspector 14. TSO: Technical Standard Order 18. This permission does not construe suitability of Federal Regulations 6. FAA:Federal Aviation Administration 7. FMCW: Frequency Modulated Continuous Wave 8. POI:Principal Operations Inspector 15. BIT:Built-In Test 5. STC...
... Garmin GRA55/5500 system as installed by this document: 1. ACO:Aircraft Certification Office 2. AEG:Aircraft Evaluation Group 3. ICA:Instructions for approval. ODA:Organization Designation Authorization 13. PMI:Principal Maintenance Inspector 14. TSO: Technical Standard Order 18. This permission does not construe suitability of Federal Regulations 6. FAA:Federal Aviation Administration 7. FMCW: Frequency Modulated Continuous Wave 8. POI:Principal Operations Inspector 15. BIT:Built-In Test 5. STC...
Maintenance Manual
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... document, or the information contained within, will equally apply 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. Bell Model 206L Maintenance Manual, Bell Document BHT-206L-MM, Revision 36, 1 June 2012 3. Bell Model 206B Maintenance Manual, Bell Document BHT...
... document, or the information contained within, will equally apply 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. Bell Model 206L Maintenance Manual, Bell Document BHT-206L-MM, Revision 36, 1 June 2012 3. Bell Model 206B Maintenance Manual, Bell Document BHT...
Maintenance Manual
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... approved radar altimeter antennas. The GRA 55/5500 radar altimeter system features: two antenna architecture for transmitting and receiving radio waves for altitude quantities, remote mounted LRU transceiver for quantifying Above Ground Level (AGL) altitude information, and interface capabilities to the avionics shelf. 2 SYSTEM DESCRIPTION 2.1 Description of Alteration This STC upgrades the existing functionality of the Bell 206B, 206L series aircraft avionics system as part of optional...
... approved radar altimeter antennas. The GRA 55/5500 radar altimeter system features: two antenna architecture for transmitting and receiving radio waves for altitude quantities, remote mounted LRU transceiver for quantifying Above Ground Level (AGL) altitude information, and interface capabilities to the avionics shelf. 2 SYSTEM DESCRIPTION 2.1 Description of Alteration This STC upgrades the existing functionality of the Bell 206B, 206L series aircraft avionics system as part of optional...
Maintenance Manual
Page 13
... unit power is cycled and subsequently every minute during "No Computed Data" (NCD) conditions. at calculated altitudes ranging from 250ft to use the web browser's download shortcuts). 2. This dongle cable is poor. 3.2 Downloading and Installing the GRA 55/5500 Retrofit Installation Tool GRA 55/5500 configuration, calibration, diagnostics, and software upgrades are performed using a personal computer (installed with Microsoft Windows XP Service Pack 3 or later) and the GRA 55/5500 Retrofit Installation Tool, Garmin part number...
... unit power is cycled and subsequently every minute during "No Computed Data" (NCD) conditions. at calculated altitudes ranging from 250ft to use the web browser's download shortcuts). 2. This dongle cable is poor. 3.2 Downloading and Installing the GRA 55/5500 Retrofit Installation Tool GRA 55/5500 configuration, calibration, diagnostics, and software upgrades are performed using a personal computer (installed with Microsoft Windows XP Service Pack 3 or later) and the GRA 55/5500 Retrofit Installation Tool, Garmin part number...
Maintenance Manual
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... the GRA 55/5500 has been powered-up the GRA 55/5500 by applying aircraft power 4. Installation Tool Page Tabs 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-2 Start the GRA 55/5500 Retrofit Installation Tool from the provided "Start Menu" shortcut, or launch the application from "Not Connected," to manually install the device drivers. If the GRA 55/5500 Retrofit Installation Tool does not display "Connected" in troubleshooting a problem. The pages are located...
... the GRA 55/5500 has been powered-up the GRA 55/5500 by applying aircraft power 4. Installation Tool Page Tabs 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-2 Start the GRA 55/5500 Retrofit Installation Tool from the provided "Start Menu" shortcut, or launch the application from "Not Connected," to manually install the device drivers. If the GRA 55/5500 Retrofit Installation Tool does not display "Connected" in troubleshooting a problem. The pages are located...
Maintenance Manual
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... Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-4 Clicking the button labeled "Restore Defaults to Unit" restores all settings to change the unit's per-airframe configuration. The GRA 55 does not utilize ARINC 429 Channel 2 and that section will not be clicked to send the configuration values to the GRA 55/5500. After adjusting any settings, the "Save Configuration to Unit" button must be selectable. The configuration tab displays the unit's current settings. Figure...
... Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-4 Clicking the button labeled "Restore Defaults to Unit" restores all settings to change the unit's per-airframe configuration. The GRA 55 does not utilize ARINC 429 Channel 2 and that section will not be clicked to send the configuration values to the GRA 55/5500. After adjusting any settings, the "Save Configuration to Unit" button must be selectable. The configuration tab displays the unit's current settings. Figure...
Maintenance Manual
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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 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.
Maintenance Manual
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... time, the type of fault or assert, and the status message accompanying the assert) is displayed. Diagnostics Page 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-6 button and the "Export Log to File..." Figure 3-5. The "Capture Raw Log to CSV..." button may be selectable. 3.4.4 Diagnostics Page The Diagnostics Page (see Figure 3-5) allows the user to the unit...
... time, the type of fault or assert, and the status message accompanying the assert) is displayed. Diagnostics Page 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-6 button and the "Export Log to File..." Figure 3-5. The "Capture Raw Log to CSV..." button may be selectable. 3.4.4 Diagnostics Page The Diagnostics Page (see Figure 3-5) allows the user to the unit...
Maintenance Manual
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... successfully calibrated. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-8 Once the calibration procedure has completed, the text will display "Calibration Complete" and the status tab will make a series of normal flight conditions. 2. The GRA 55/5500 Retrofit Installation Tool provides an interface button to the connected GRA 55/5500. This procedure removes the altitude offsets associated with antenna cables, antenna height above ground, etc.
... successfully calibrated. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 3-8 Once the calibration procedure has completed, the text will display "Calibration Complete" and the status tab will make a series of normal flight conditions. 2. The GRA 55/5500 Retrofit Installation Tool provides an interface button to the connected GRA 55/5500. This procedure removes the altitude offsets associated with antenna cables, antenna height above ground, etc.
Maintenance Manual
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... the coaxial connectors are free of the following items. See Section 6 for removal and replacement instructions. • GRA 55/5500 Mount Rack • GRA 55/5500 LRU • Antenna On Condition Perform an electrical bonding check as follows: 1. Verify that the resistance is less than or equal to 2.5 milliohms. 3. Disconnect the wire harnesses from the GRA 55/ 5500 at P55001, TX, and RX connections. 2. Clean...
... the coaxial connectors are free of the following items. See Section 6 for removal and replacement instructions. • GRA 55/5500 Mount Rack • GRA 55/5500 LRU • Antenna On Condition Perform an electrical bonding check as follows: 1. Verify that the resistance is less than or equal to 2.5 milliohms. 3. Disconnect the wire harnesses from the GRA 55/ 5500 at P55001, TX, and RX connections. 2. Clean...
Maintenance Manual
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... applicable Bell 206B, 206L series Model Maintenance Manual. Perform a visual inspection of the installation in alignment with BHT-206-SRM-1 Structural Repair Manual, Revision 3, or later approved revision. 3. If damage to ensure continued integrity of the GRA unit, unit mount, and wiring harnesses to 25 in full contact with unit mounting rack and re-torque 20 to verify integrity. 1. Inspect connectors for bent/broken or...
... applicable Bell 206B, 206L series Model Maintenance Manual. Perform a visual inspection of the installation in alignment with BHT-206-SRM-1 Structural Repair Manual, Revision 3, or later approved revision. 3. If damage to ensure continued integrity of the GRA unit, unit mount, and wiring harnesses to 25 in full contact with unit mounting rack and re-torque 20 to verify integrity. 1. Inspect connectors for bent/broken or...
Maintenance Manual
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... set to a valid ID Hardware failure Return unit to Garmin for the Garmin GRA 55/5500 Radar Altimeter. All faulty units must be returned to Garmin for service Average frequency of monitored unit faults • Checking the unit software versions • Checking the unit installation configuration • Downloading and analyzing the unit assert log • Checking the unit statistics and internal recorded unit temperatures The troubleshooting methods listed herein are employed using the GRA...
... set to a valid ID Hardware failure Return unit to Garmin for the Garmin GRA 55/5500 Radar Altimeter. All faulty units must be returned to Garmin for service Average frequency of monitored unit faults • Checking the unit software versions • Checking the unit installation configuration • Downloading and analyzing the unit assert log • Checking the unit statistics and internal recorded unit temperatures The troubleshooting methods listed herein are employed using the GRA...
Maintenance Manual
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..., return unit to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-2 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 and all cable connections. Failure...
..., return unit to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-2 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 and all cable connections. Failure...
Maintenance Manual
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... packet Internal information is not communication correct from sensor error Sensor Watchdog Sensor processor Sensor processor failure reset signal triggered by sensor Internal watchdog communication error Resolution Cycle power to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-3 If fault persists, return unit to unit. Cycle power to RF Temp Sensor I2C determine correct operation. Main Temp Sensor I2C Temperature Sensor is read to Garmin for service. Fault...
... packet Internal information is not communication correct from sensor error Sensor Watchdog Sensor processor Sensor processor failure reset signal triggered by sensor Internal watchdog communication error Resolution Cycle power to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-3 If fault persists, return unit to unit. Cycle power to RF Temp Sensor I2C determine correct operation. Main Temp Sensor I2C Temperature Sensor is read to Garmin for service. Fault...
Maintenance Manual
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... Garmin for diagnosis. Check antenna installation and all cable connections. If fault persists, download the assert log and send to unit. Fault Type Fault Name Suspended Power Fail DDS TX PLL Lock LO PLL Lock Radio HW Auto RF Self-Test Main RF Self-Test Description Cause Internal power supply failure Aircraft power lost for greater than 220 ms Aircraft power failure Failure to Garmin for service...
... Garmin for diagnosis. Check antenna installation and all cable connections. If fault persists, download the assert log and send to unit. Fault Type Fault Name Suspended Power Fail DDS TX PLL Lock LO PLL Lock Radio HW Auto RF Self-Test Main RF Self-Test Description Cause Internal power supply failure Aircraft power lost for greater than 220 ms Aircraft power failure Failure to Garmin for service...
Maintenance Manual
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If fault persists, return unit to Garmin for service. [1] Fault can be found in the Power on Self Test (POST) fault list and in normal operational mode fault list. If fault persists, return unit to Garmin for service. Review Table 5-1 fault tree for identification. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-7 Fault Type Temperature Fault Name Main Temp (Fault...
If fault persists, return unit to Garmin for service. [1] Fault can be found in the Power on Self Test (POST) fault list and in normal operational mode fault list. If fault persists, return unit to Garmin for service. Review Table 5-1 fault tree for identification. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-7 Fault Type Temperature Fault Name Main Temp (Fault...
Maintenance Manual
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... 866-739-5687 (US toll free) 913-397-8200 or avionics@garmin.com. To Access Aviation Manuals, select the 'Support' tab and then select 'Manuals'. A Garmin Service Bulletin describing ICA revision will be sent to Garmin dealers if a revision is determined to be performed if aircraft is no damage. 8 LIMITATIONS AND ADDITIONAL REQUIREMENTS 8.1 Diagrams Aircraft specific LRU locations and wire routing diagram are contained in Appendix A of...
... 866-739-5687 (US toll free) 913-397-8200 or avionics@garmin.com. To Access Aviation Manuals, select the 'Support' tab and then select 'Manuals'. A Garmin Service Bulletin describing ICA revision will be sent to Garmin dealers if a revision is determined to be performed if aircraft is no damage. 8 LIMITATIONS AND ADDITIONAL REQUIREMENTS 8.1 Diagrams Aircraft specific LRU locations and wire routing diagram are contained in Appendix A of...