Maintenance Manual
Page 6
... Alteration ...2-1 2.2 Block Diagram ...2-1 3 GRA 55/5500 CONTROL AND OPERATION 3-1 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 ... ...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...
... Alteration ...2-1 2.2 Block Diagram ...2-1 3 GRA 55/5500 CONTROL AND OPERATION 3-1 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 ... ...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...
Maintenance Manual
Page 8
... Diagram 2-1 Installation Tool Page Tabs 3-2 Status Page ...3-3 Configuration Page 3-4 Software Page ...3-5 Diagnostics Page 3-6 Utilities 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 206B, 206L Series ..... Figure 3-1. Figure A-1.
... Diagram 2-1 Installation Tool Page Tabs 3-2 Status Page ...3-3 Configuration Page 3-4 Software Page ...3-5 Diagnostics Page 3-6 Utilities 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 206B, 206L Series ..... Figure 3-1. Figure A-1.
Maintenance Manual
Page 9
Table 4-1. Table 5-1. Table A-1. LIST OF TABLES Maintenance Intervals for GRA 55/5500 4-2 Maintenance Intervals for Antennas Replaced Under this STC 4-4 GRA 5500 Fault Descriptions 5-1 Bill of Materials A-2 Circuit Breaker Placard A-3 Weight and Balance Details A-5 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page v Table A-2. Table A-3. Table 4-2.
Table 4-1. Table 5-1. Table A-1. LIST OF TABLES Maintenance Intervals for GRA 55/5500 4-2 Maintenance Intervals for Antennas Replaced Under this STC 4-4 GRA 5500 Fault Descriptions 5-1 Bill of Materials A-2 Circuit Breaker Placard A-3 Weight and Balance Details A-5 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page v Table A-2. Table A-3. Table 4-2.
Maintenance Manual
Page 12
...of providing the optional 50 ft callout as summarized below. The GRA 55/5500 radar altimeter may also integrate with the approved radar altimeter antennas. GRA 55/5500 Block Diagram System Maintenance Manual GRA 55/5500 Bell 206 STC Page 2-1 The system requires a 5 Amp...Rev. 1 0DLQ 3URFHVVLQJ 8QLW 5; .(< *5$ /58 $5,1& 0LFURSURFHVVRU EDVHGVXEV\VWHP Figure 2-1. The two approved radar altimeter antennas are compatible with an installed Garmin GTN 6XX/7XX for pilot display of the Bell 206B, 206L series aircraft avionics system as part of 20" on the underside...
...of providing the optional 50 ft callout as summarized below. The GRA 55/5500 radar altimeter may also integrate with the approved radar altimeter antennas. GRA 55/5500 Block Diagram System Maintenance Manual GRA 55/5500 Bell 206 STC Page 2-1 The system requires a 5 Amp...Rev. 1 0DLQ 3URFHVVLQJ 8QLW 5; .(< *5$ /58 $5,1& 0LFURSURFHVVRU EDVHGVXEV\VWHP Figure 2-1. The two approved radar altimeter antennas are compatible with an installed Garmin GTN 6XX/7XX for pilot display of the Bell 206B, 206L series aircraft avionics system as part of 20" on the underside...
Maintenance Manual
Page 20
... display "Calibration Complete" and the status tab will report progress updates next to verify antenna installation and the antenna coaxial cables are installed and connected properly. 3. A visual inspection must be connected to the connected GRA 55/5500. The entire GRA 55/5500 must be completely installed and mounted in the final configuration as representative of requests...
... display "Calibration Complete" and the status tab will report progress updates next to verify antenna installation and the antenna coaxial cables are installed and connected properly. 3. A visual inspection must be connected to the connected GRA 55/5500. The entire GRA 55/5500 must be completely installed and mounted in the final configuration as representative of requests...
Maintenance Manual
Page 22
...mounting rack. Verify that the mating surfaces To be performed in 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... the mounting rack and a nearby exposed portion of corrosion alignment with Bell or any other debris. Maintenance Intervals for GRA 55/5500 Item Description/Procedure Interval Equipment Removal and Replacement Removal and replacement of the following items. See Section 6 for the LRU...
...mounting rack. Verify that the mating surfaces To be performed in 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... the mounting rack and a nearby exposed portion of corrosion alignment with Bell or any other debris. Maintenance Intervals for GRA 55/5500 Item Description/Procedure Interval Equipment Removal and Replacement Removal and replacement of the following items. See Section 6 for the LRU...
Maintenance Manual
Page 23
... bent, broken, or recessed pins. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-3 Repair GRA unit support structure in -lbs, and remove and replace antenna sealant (MIL-A-46146). 4. Visually inspect integrity of the GRA antennas, antenna fasteners, and antenna sealant for damage. Check and re-torque mounting rack fasteners 20 to 25...
... bent, broken, or recessed pins. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-3 Repair GRA unit support structure in -lbs, and remove and replace antenna sealant (MIL-A-46146). 4. Visually inspect integrity of the GRA antennas, antenna fasteners, and antenna sealant for damage. Check and re-torque mounting rack fasteners 20 to 25...
Maintenance Manual
Page 25
... methods specified in alignment with Bell Specification BHT-ELEC-SPM CHP 8. Bonding Check, Antennas For antennas that use stud mounts, prep the area underneath the washer on antennas installed by this STC Item Description/Procedure Interval An electrical bonding test must be performed... in BHT-ELEC-SPM CHP 8. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-5 Maintenance Intervals for Antennas Replaced Under this STC. 1. Any reworked antenna installation shall have a resistance of the fastener head itself. exposed rivet).
... methods specified in alignment with Bell Specification BHT-ELEC-SPM CHP 8. Bonding Check, Antennas For antennas that use stud mounts, prep the area underneath the washer on antennas installed by this STC Item Description/Procedure Interval An electrical bonding test must be performed... in BHT-ELEC-SPM CHP 8. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 4-5 Maintenance Intervals for Antennas Replaced Under this STC. 1. Any reworked antenna installation shall have a resistance of the fastener head itself. exposed rivet).
Maintenance Manual
Page 26
...antenna. 12 months, whichever comes Visual inspection of the rotorcraft exterior skin around the antenna ...antenna is cracked, or deformed, the internal structure must be replaced. Item Visual Inspection of the antennas Description/Procedure Visual inspection on the antenna and around the antenna... are in In the event attachment is not deformed. 3. Verify there are no cracks on the antenna...aircraft skin is not secure, re-attach antenna alignment with water and mild inspection in the ...
...antenna. 12 months, whichever comes Visual inspection of the rotorcraft exterior skin around the antenna ...antenna is cracked, or deformed, the internal structure must be replaced. Item Visual Inspection of the antennas Description/Procedure Visual inspection on the antenna and around the antenna... are in In the event attachment is not deformed. 3. Verify there are no cracks on the antenna...aircraft skin is not secure, re-attach antenna alignment with water and mild inspection in the ...
Maintenance Manual
Page 27
... using the GRA 55/5500 Retrofit Installation Tool as described in the following methods: • Checking the status of zero-foot signal is larger/smaller than allowable frequencies Improper antenna connections Check antenna installation and all cable connections and retry calibration. All faulty units must be returned to the need for the Garmin GRA 55/5500 Radar...
... using the GRA 55/5500 Retrofit Installation Tool as described in the following methods: • Checking the status of zero-foot signal is larger/smaller than allowable frequencies Improper antenna connections Check antenna installation and all cable connections and retry calibration. All faulty units must be returned to the need for the Garmin GRA 55/5500 Radar...
Maintenance Manual
Page 28
... service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-2 If fault persists, return unit to Garmin for service. Cycle power to Garmin for service. Fault Type Fault Name PLL Register RF Self-Test POST (Power On Self-Test) Sensor Boot Various ...frequency range Improper antenna connections Internal failure Check antenna installation and all cable connections. If fault persists, return unit to unit. Failure of the PLL register values does not match what was sent from Internal communication error the CPU Cycle power to Garmin for diagnosis. Sensor...
... service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-2 If fault persists, return unit to Garmin for service. Cycle power to Garmin for service. Fault Type Fault Name PLL Register RF Self-Test POST (Power On Self-Test) Sensor Boot Various ...frequency range Improper antenna connections Internal failure Check antenna installation and all cable connections. If fault persists, return unit to unit. Failure of the PLL register values does not match what was sent from Internal communication error the CPU Cycle power to Garmin for diagnosis. Sensor...
Maintenance Manual
Page 32
...log and send to unit. Cycle power to Garmin for diagnosis. Check antenna installation and all cable connections. If fault persists, download the assert log and send to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-6 If fault persists..., return unit to Garmin for diagnosis. If fault ...
...log and send to unit. Cycle power to Garmin for diagnosis. Check antenna installation and all cable connections. If fault persists, download the assert log and send to Garmin for service. 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 5-6 If fault persists..., return unit to Garmin for diagnosis. If fault ...
Maintenance Manual
Page 34
... head machine screws (No. 10, supplied) to secure antennas. Place the rack on the mounting rack, ensuring the GRA 55/5500 rear feet are fully engaged with lockdown knob facing forward. 3. Remove 4 ea. Slide the GRA 55/5500 back until the feet are aligned in continuous contact with ...the mounting shelf assembly with the mounting rack. 3. Clean and inspect the antenna mount. Lift the lockdown collar in lbs. 4. Remove GRA 55/5500 unit if not already done. 2. Verify that the antenna base and antenna mount are in the mounting rack slots. 2. Pull back on the underside...
... head machine screws (No. 10, supplied) to secure antennas. Place the rack on the mounting rack, ensuring the GRA 55/5500 rear feet are fully engaged with lockdown knob facing forward. 3. Remove 4 ea. Slide the GRA 55/5500 back until the feet are aligned in continuous contact with ...the mounting shelf assembly with the mounting rack. 3. Clean and inspect the antenna mount. Lift the lockdown collar in lbs. 4. Remove GRA 55/5500 unit if not already done. 2. Verify that the antenna base and antenna mount are in the mounting rack slots. 2. Pull back on the underside...
Maintenance Manual
Page 35
... VIEW SHOWING UNIT FEET ENGAGED INTO MOUNTING RACK 2 PLACES Figure 6-1. Lower the antenna enough to disconnect the coaxial connector, and disconnect. 4. Remove the antenna and conductive gasket from the airframe. GRA 55/5500 Installation 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 6-2 Remove the sealant compound (MIL-A-46146) along the...
... VIEW SHOWING UNIT FEET ENGAGED INTO MOUNTING RACK 2 PLACES Figure 6-1. Lower the antenna enough to disconnect the coaxial connector, and disconnect. 4. Remove the antenna and conductive gasket from the airframe. GRA 55/5500 Installation 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page 6-2 Remove the sealant compound (MIL-A-46146) along the...
Maintenance Manual
Page 36
... IN ANTENNA KIT GARMIN P/N 013-00378-00 (2X) S67-2002 RADAR ALTIMETER ANTENNA INCLUDED WITH 013-00378-00 ANTENNA KIT MS24693-C272 SCREW, MACHINE COUNTERSUNK .1900-32UNF 2A INCLUDED WITH 013-00378-00 ANTENNA KIT. TYP. 4 PLCS Figure 6-3. ADDED OR EXISTING MOUNTING SHELF ASSEMBLY 0.20 4 PLCS 0.098 THROUGH 0.179-100 8 PLCS REF. REF. GRA 55/5500 Antenna Installation...
... IN ANTENNA KIT GARMIN P/N 013-00378-00 (2X) S67-2002 RADAR ALTIMETER ANTENNA INCLUDED WITH 013-00378-00 ANTENNA KIT MS24693-C272 SCREW, MACHINE COUNTERSUNK .1900-32UNF 2A INCLUDED WITH 013-00378-00 ANTENNA KIT. TYP. 4 PLCS Figure 6-3. ADDED OR EXISTING MOUNTING SHELF ASSEMBLY 0.20 4 PLCS 0.098 THROUGH 0.179-100 8 PLCS REF. REF. GRA 55/5500 Antenna Installation...
Maintenance Manual
Page 38
... permanent records. N/A. 8.4 Data Relative to Structural Fasteners See Table A-1 and Figure A-3 for the GRA 55/5500 system to ensure the system is determined to be removed and replaced (See Section 6 for Antenna fastener information. 8.5 Additional Instructions None. Power on the Garmin website (www.flyGarmin.com). Completed forms are to be contacted during normal business...
... permanent records. N/A. 8.4 Data Relative to Structural Fasteners See Table A-1 and Figure A-3 for the GRA 55/5500 system to ensure the system is determined to be removed and replaced (See Section 6 for Antenna fastener information. 8.5 Additional Instructions None. Power on the Garmin website (www.flyGarmin.com). Completed forms are to be contacted during normal business...
Maintenance Manual
Page 41
....00 FS 136.45 FS 142.33 TBS 50.22 TBS 71.44 Figure A-1. GRA STC Equipment Fuselage Station Location for the GRA55/5500 component locations. GARMIN GDU 620 DISPLAY REF. CIRCUIT BREAKER INSTALLATION WL 51.67 REF. EXISTING ANTENNA MOUNTS REF. APPENDIX A AIRCRAFT SPECIFIC INFORMATION Figure A-1 and Figure A-2 depicts the typical location for...
....00 FS 136.45 FS 142.33 TBS 50.22 TBS 71.44 Figure A-1. GRA STC Equipment Fuselage Station Location for the GRA55/5500 component locations. GARMIN GDU 620 DISPLAY REF. CIRCUIT BREAKER INSTALLATION WL 51.67 REF. EXISTING ANTENNA MOUNTS REF. APPENDIX A AIRCRAFT SPECIFIC INFORMATION Figure A-1 and Figure A-2 depicts the typical location for...
Maintenance Manual
Page 44
... for the GRA 55/5500 system, to the GRA 55/5500 installation manual. COAXIAL CABLE REF. 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 Figure A-5 depicts the typical wire harness installation for the antennas. Due to...
... for the GRA 55/5500 system, to the GRA 55/5500 installation manual. COAXIAL CABLE REF. 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 Figure A-5 depicts the typical wire harness installation for the antennas. Due to...
Maintenance Manual
Page 46
REF. GARMIN GTN NAVIGATOR WL 0.00 190-01277-A3 Rev. 1 Figure A-7. All harnesses fabricated as part of the LRUs and antennas for the GRA 55/5500 throughout the aircraft structure for the Bell 206B rotorcraft. EXISTING AVIONICS SHELF GRA RADAR ALTIMETER INSTALLATION FS 0.00 FS 130.00 FS 136.45 FS... 142.33 TBS 50.22 TBS 71.44 CIRCUIT BREAKER INSTALLATION WL 51.67 REF. Bell 206B LRU and Antenna Locations System Maintenance Manual GRA 55/5500 Bell 206 STC Page A-6 GARMIN GDU 620 DISPLAY REF. Figure A-7 depicts the location of this STC follow existing wire bundles as depicted in ...
REF. GARMIN GTN NAVIGATOR WL 0.00 190-01277-A3 Rev. 1 Figure A-7. All harnesses fabricated as part of the LRUs and antennas for the GRA 55/5500 throughout the aircraft structure for the Bell 206B rotorcraft. EXISTING AVIONICS SHELF GRA RADAR ALTIMETER INSTALLATION FS 0.00 FS 130.00 FS 136.45 FS... 142.33 TBS 50.22 TBS 71.44 CIRCUIT BREAKER INSTALLATION WL 51.67 REF. Bell 206B LRU and Antenna Locations System Maintenance Manual GRA 55/5500 Bell 206 STC Page A-6 GARMIN GDU 620 DISPLAY REF. Figure A-7 depicts the location of this STC follow existing wire bundles as depicted in ...
Maintenance Manual
Page 47
All harnesses fabricated as part of the LRUs and antennas for the GRA 55/5500 throughout the aircraft structure for the Bell 206L Series rotorcraft. Bell 206L Series LRU and Antenna Locations 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page A-7 EXISTING AVIONICS SHELF FS 0.00 FS 155.00 FS 161.45 FS 167.33 TBS 50.22 TBS 71.44 CIRCUIT BREAKER INSTALLATION WL 51.67 WL 0.00 Figure A-8. Figure A-8 depicts the location of this STC follow existing wire bundles as depicted in Figure A-5. GRA RADAR ALTIMETER INSTALLATION REF. EXISTING ANTENNA MOUNTS REF.
All harnesses fabricated as part of the LRUs and antennas for the GRA 55/5500 throughout the aircraft structure for the Bell 206L Series rotorcraft. Bell 206L Series LRU and Antenna Locations 190-01277-A3 Rev. 1 System Maintenance Manual GRA 55/5500 Bell 206 STC Page A-7 EXISTING AVIONICS SHELF FS 0.00 FS 155.00 FS 161.45 FS 167.33 TBS 50.22 TBS 71.44 CIRCUIT BREAKER INSTALLATION WL 51.67 WL 0.00 Figure A-8. Figure A-8 depicts the location of this STC follow existing wire bundles as depicted in Figure A-5. GRA RADAR ALTIMETER INSTALLATION REF. EXISTING ANTENNA MOUNTS REF.