Maintenance Support Document

to other sections, items, details, etc., the intent of which is to further identify or clarify existing information. 1.5 Revision to ICA Revisions to this document and the documents listed within it are distributed to the operators who have this modification installed on the subject aircraft, either in electronic or paper format. Contact AKV for available revision changes. AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 2 of 32 1.6 Abbreviations and Definitions A&P Airframe & Power plant Mechanic CFR Code of Federal Regulations RFM Rotorcraft Flight Manual RFMS Rotorcraft Flight Manual Supplement FAR Federal Aviation Regulations 2. AIRWORTHINESS LIMITATIONS This section is FAA approved and specifies the inspections, and other maintenance, which are required under 14 CFR 43.16 and 91.403, unless an alternative program has been FAA approved. There are “No airworthiness limitations associated with this type design change”. 3. SYSTEM DESCRIPTION The AKV Starter Interrupt Kit is designed to prevent starter engagement and potential hot starts with the throttle or fuel cutoff open. A hot start (exceeding the engine start temperature limits) on initial ground starts will possibly result in removal of the engine for inspection and repair. The kit provides two (2) micro switches. One that detects the throttle in the closed position and the second that detects the fuel control unit (FCU) is also in the closed position. Either will electrically interrupt the starter relay if they are open. The RHSI circuit is wired in series with the rotor brake which also provides interruption of the starter relay when the rotor brake is engaged. An amber indicator light marked “RHSI L1 PTT” is located next to the pilot collective and when lighted, indicates to the pilot that the throttle or fuel cutoff is in the open position. It also has a built in press-to-test to verify the bulb is operational. Power to the starter interrupt kit is provided via a 1 amp circuit breaker located on the circuit breaker panel in front of the copilot seat and is marked “AKV RHSI” In order for the press-to-test function to operate, the battery switch must be ON, the rotor brake off and circuit breaker pushed in. The starter interrupt circuit is electrically removed from the starter circuit after the MGBP switch rises. NOTE: The starter interrupt kit can be de-energized or overridden by pulling the circuit breaker. Normal operation of initial on ground engine starting without protection is then provided. After normal engine start, the AKV Starter Interrupt kit is disabled via the MGBP rising. This allows for in-flight engine restarts in the event of an engine failure. AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 3 of 32 CAUTION: When the starter Interrupt is disabled after MGBP rising, it will not provide protection during in-flight engine restarts. It is therefore important that the pilot follow the basic rotorcraft flight manual (RFM) in-flight engine restart procedure. 4. MAINTENANCE INSTRUCTIONS 4.1 Routine Cleaning & Maintenance Routine Cleaning & Maintenance may be required as the result of an inspection. Re- tighten loose fasteners to the standard torque values shown in Table 1 and Table 2. Perform routine cleaning to remove contaminants from the Starter Interrupt Kit. Remove grease, fungus, and ground-in dirt from equipment and mounting brackets using a clean, soft cloth. 4.2 Tools Only those required for re-tightening of mounting hardware 4.3 Overhaul There are no component overhaul requirements for this type design change. Under normal operating conditions, the Starter Interrupt Kit will not require component overhaul. All parts and assemblies are designed to be replaced “On Condition”. Any maintenance needed to the Starter Interrupt Kit or its installation beyond that described in this document requires that the components be removed and returned to AKV, Inc. The decision to return damaged components may be a subjective one and should be made by a qualified A & P Mechanic. 4.4 Component Retirement/Retirement Life The Starter Interrupt Kit has been designed with components that have a virtually unlimited life span. However, it is anticipated that some components may require replacement at some time during the service life of the helicopter. The decision to replace these parts is a subjective one and should be made by the operator or an A & P Mechanic. AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 4 of 32 Table 1: Recommended torque values for nut-bolt combinations: Fine Thread Series 1 Torque values without lubrication Bolts -- Steel Tension Bolts -- Steel Tension Bolts -- Aluminum AN 3 – AN 20 MS 20004 – MS 20024 AN 3DD – AN 20DD AN 42 – AN 49 NAS 144 – NAS 158 AN 173DD – AN 186DD AN 73 – AN 81 NAS 583 – NAS 590 AN 509DD AN 173 – AN 186 NAS 144 – NAS 158 AN 525D MS 20033 – MS 20046 NAS 144624 – NAS 644 MS 27039D MS 20073 NAS 1303 – NAS 1320 MS 24694DD MS 20074 NAS 172 -------- AN 509 NK9 NAS 174 -------- MS 24694 NAS 517 -------- AN 525 NK525 -------- -------- MS 27030 -------- -------- Steel Shear Bolt NAS 464 Nuts Nuts Nuts Steel Tension Steel Shear Steel Tension Steel Shear Aluminum Tension Aluminum Shear AN 310 AN 320 AN 310 AN 320 AN 365D AN320D AN 315 AN 364 AN 315 AN 364 AN 310D AN 364D AN 363 NAS 1022 AN 363 NAS 1022 NAS 1021D NAS 1022D AN 365 MS 17826 AN 365 MS 17826 -------- -------- NAS 1021 MA 20364 MS 17825 MS 20364 -------- -------- MS 17825 -------- MS 20365 -------- -------- -------- MS 21045 -------- MS 21045 -------- -------- -------- MS 20365 -------- NAS 1021 -------- -------- -------- MS 20500 -------- NAS 679 -------- -------- -------- NAS 679 -------- NAS 1291 -------- -------- -------- FINE THREAD SERIES1 Nut-Bolt Size Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Min. Max Min. Max Min. Max Min. Max Min. Max Min. Max 8 - 36 12 15 7 9 ------ ------ ------ ------ 5 10 3 6 10 - 32 20 25 12 15 25 30 15 20 10 15 5 10 1/4 - 28 50 70 30 40 80 100 50 60 30 45 15 30 5/16 - 24 100 140 60 85 120 145 70 90 40 65 25 40 3/8 - 24 160 190 95 110 200 250 120 150 75 110 45 70 7/16 - 20 450 550 270 300 520 630 300 400 180 280 110 170 1/2 - 20 480 690 290 410 770 950 450 550 280 410 160 260 9/16 - 18 800 1000 480 600 1100 1300 650 800 380 580 230 360 5/8 - 18 1100 1300 660 780 1250 1550 750 950 550 670 270 420 3/4 - 16 2300 2500 1300 1500 2650 3200 1600 1900 950 1250 5560 880 7/8 - 14 2500 3000 1500 1800 3550 4350 2100 2600 1250 1900 750 1200 1 - 14 3700 4500 2200 3300 4500 5500 2700 3300 1600 2400 950 1500 11/8 - 12 5000 7000 3000 4200 6000 7300 3600 4400 2100 3200 1250 2000 11/4 - 12 9000 11000 5400 6600 11000 13400 6600 8000 3900 5600 2300 3650 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 5 of 32 Table 2: Recommended torque values for nut-bolt combinations: Coarse Thread Series 2 Torque values without lubrication Bolts -- Steel Tension Bolts -- Steel Tension Bolts -- Aluminum AN 3 – AN 20 MS 20004 – MS 20024 AN 3DD – AN 20DD AN 42 – AN 49 NAS 144 – NAS 158 AN 173DD – AN 186DD AN 73 – AN 81 NAS 583 – NAS 590 AN 509DD AN 173 – AN 186 NAS 144 – NAS 158 AN 525D MS 20033 – MS 20046 NAS 144624 – NAS 644 MS 27039D MS 20073 NAS 1303 – NAS 1320 MS 24694DD MS 20074 NAS 172 -------- AN 509 NK9 NAS 174 -------- MS 24694 NAS 517 -------- AN 525 NK525 -------- -------- MS 27030 -------- -------- Steel Shear Bolt NAS 464 Nuts Nuts Nuts Steel Tension Steel Shear Steel Tension Steel Shear Aluminum Tension Aluminum Shear AN 310 AN 320 AN 310 AN 320 AN 365D AN320D AN 315 AN 364 AN 315 AN 364 AN 310D AN 364D AN 363 NAS 1022 AN 363 NAS 1022 NAS 1021D NAS 1022D AN 365 MS 17826 AN 365 MS 17826 -------- -------- NAS 1021 MA 20364 MS 17825 MS 20364 -------- -------- MS 17825 -------- MS 20365 -------- -------- -------- MS 21045 -------- MS 21045 -------- -------- -------- MS 20365 -------- NAS 1021 -------- -------- -------- MS 20500 -------- NAS 679 -------- -------- -------- NAS 679 -------- NAS 1291 -------- -------- -------- COARSE THREAD SERIES2 Nut-Bolt Size Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Torque Limits In-lbs. Min. Max Min. Max Min. Max Min. Max Min. Max Min. Max 8 - 32 12 15 7 9 ------ ------ ------ ------ ------ ------ ------ ------ 10 - 24 20 25 12 15 ------ ------ ------ ------ ------ ------ ------ ------ 1/4 - 20 40 50 25 30 ------ ------ ------ ------ ------ ------ ------ ------ 5/16 - 18 80 90 48 55 ------ ------ ------ ------ ------ ------ ------ ------ 3/8 - 16 160 185 95 110 ------ ------ ------ ------ ------ ------ ------ ------ 7/16 - 14 235 255 140 155 ------ ------ ------ ------ ------ ------ ------ ------ 1/2 - 13 400 480 240 290 ------ ------ ------ ------ ------ ------ ------ ------ 9/16 - 12 500 700 300 420 ------ ------ ------ ------ ------ ------ ------ ------ 5/8 - 11 700 900 420 540 ------ ------ ------ ------ ------ ------ ------ ------ 3/4 - 10 1150 1600 700 950 ------ ------ ------ ------ ------ ------ ------ ------ 7/8 - 9 2200 3000 1300 1800 ------ ------ ------ ------ ------ ------ ------ ------ 1 - 8 3700 5000 2200 3000 ------ ------ ------ ------ ------ ------ ------ ------ 11/8 - 8 5500 6500 3300 4000 ------ ------ ------ ------ ------ ------ ------ ------ 11/4 - 8 6500 8000 4000 5000 ------ ------ ------ ------ ------ ------ ------ ------ AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 6 of 32 5. REQUIRED INSPECTIONS 5.1 Annual Inspection This section contains the time limit intervals and requirements for the scheduled and conditional inspections for the Starter Interrupt Kit Installation. The inspection items are determined through experience, tests, and the judgment of mechanics and engineers. Every calendar inspection is a visual and thorough inspection to determine the airworthiness of the Starter Interrupt Kit. Qualified persons must perform the inspections in accordance with standard aircraft practices and the applicable maintenance manuals. An Annual inspection using this RHSI-R66-ICA document (Instructions for Continued Airworthiness), is required. When using this document to perform the required inspections, use the “Inspection Task Description” forms below to record the appropriate data. Any reference data needed to perform this inspection, other than this document, will be listed in the “Data Reference” column of the inspection forms. The inspection task to be completed is described in the “Inspection Task Description” column of the inspection form. When each task is satisfactorily completed, the mechanic performing the inspection task signs the “Mechanic” column for that task. If the inspection task fails the inspection, the reason for the failure must be determined and remedial action taken before the “Mechanic” block can be signed off. Remedial action may involve cleaning, verifying correct operation, adjusting the tightness of fasteners and hardware, sending the assembly to the manufacturer for overhaul or replacement, etc. Once the appropriate remedial action has been taken and the inspection task has been satisfactorily performed, the mechanic may sign off the “Mechanic” block. Once all tasks are signed off in the “Mechanic” Column, the inspection form may be signed off at the top of the form and the inspection has then been completed. 5.2 Special Inspection In the event of a hard landing, perform the “Annual Inspection” tasks prior to returning the aircraft to service. AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 7 of 31 Helicopter S/N:________________________________ Registration: ____________________________________ Facility: ______________________________________ W.O.: _________________________________________ A/F Total time: ________________________________ Rin: ___________________________________________ Engine Total time: _____________________________ Cycle: _________________________________________ Date started: _________________________________ Date completed: _________________________________ Signature: ___________________________________ License number: ________________________________ Annual Inspection Data Reference Inspection Task Description Mechanic APPENDIX A 1. REMOVE BOTH COVER PLATES UNDER AND BEHIND THE PILOT COLLECTIVE. 2. REMOVE THE LOWER AIRFRAME CENTER BELLY ACCESS PANEL. 3. LOCATE THE THROTTLE POSITION SWITCH S1 PER R66 INSTALLATION DWG RH-105 SHT 1 - 4. 4. CHECK THE S1 POSITION SWITCH MOUNTING HARDWARE IS SECURE AND THERE ARE NO CRACKS IN THE MOUNTING ASSY. 5. VERIFY ALL WIRING ON THE S1 POSITION SWITCH IS SECURE. 6. WITH THE THROTTLE IN THE CLOSED POSITION, VERIFY THE SWITCH ACTUATOR BUTTON IS SECURE AND IT IS CENTER WITH THE S1 POSITION SWITCH PER DWG RH-105 SHT 4. 7. LOCATE RELAY R1 AND R2 PER DWG RH-105 SHT 5 BELOW THE COLLECTIVE AND VERYFY THE RELAYS AND THE WIRE SPADE TERMALS ARE SECURE. 8. LOCATE AMBER LAMP L1 AND VERIFY IT IS SECURE. 1. LOCATE THE FUEL CONTROL UNIT (FCU) ON THE ENGINE. 2. LOCATE THE FCU LEVER AND THE AKV S2 POSITION SWITCH PER DWG RH-105 SHT 10. 3. CHECK THAT THE S2 SWITCH SAFETY WIRE IS SECURE AND THE NUT IS TIGHT. 4. VERIFY THERE IS NO CORROSION AROUND THE SWITCH AND BRACKET. 5. VERIFY THE S2 SWITCH MOUNTING BRACKET S SECURE. 6. USING A MILLIOHM METER, CHECK THAT THE BONDING OF THE SWITCH BODY TO AIRFRAME GROUND IS <2.5 MILLOHM. 7. CHECK THE S2 WIRE BULLET CONNECTION AND HEAT SHRINK TUBING IS TIGHT AND SECURE. AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 8 of 31 Data Reference Inspection Task Description Mechanic Operational Check 1. BATTERY SWITCH ON. 2. FUEL CUTOFF IS PULLED TO CUTOFF POSITION 3. THROTTLE IS CLOSED 4. RELEASE THE ROTOR BRAKE AND CONFIRM ROTOR BRAKE LIGHT IS EXTINGUISHED. 5. PRESS-TO-TEST THE THROTTLE POSITION AMBER LIGHT. 6. OPEN THE THROTTLE APPROX. 1/2" AND CHECK AMBER LIGHT IS ILLUMINATED. 7. PRESS THE COLLECTIVE START PUSHBUTTON TO VERIFY THE STARTER DOES NOT ENGAGE. 8. CLOSE THE THROTTLE AND THE VERIFY AMBER LIGHT EXTINGUISHES. 9. OPEN THE FUEL CUTOFF APPROX. 1” AND CHECK AMBER LIGHT IS ILLUMINATED. 10. PRESS THE COLLECTIVE START PUSHBUTTON TO VERIFY STARTER DOES NOT ENGAGE. 11. CLOSE THE FUEL CUTOFF AND VERIFY THE AMBER LIGHT EXTINGUISHES. 12. PULL THE CIRCUIT BREAKER MARKED “AKV RHSI” 13. PRESS-TO-TEST THE AMBER LIGHT TO VERIFY IT DOES NOT ILLUMINATE. 14. PRESS THE COLLECTIVE START PUSHBUTTON AGAIN TO VERIFY THE STARTER ENAGAGES. 15. PUSH THE CIRCUIT BREAKER BACK IN. 16. START ENGINE PER FLIGHT MANUAL. 12. AFTER ENGINE START IS COMPLETE AND THE HELICOPTER IS AT GROUND IDLE, PRESS-TO-TEST THE AMBER LIGHT AGAIN TO VERIFY IT DOES NOT ILLUMINATE. 15. SHUTDOWN ENGINE. WARNING: THE OPERATIONAL CHECK ABOVE IS IMPORTANT TO CONFIRM CORRECT OPERATION OF THE CIRCUIT BY: 1. Verifying the system interrupts starter engagement when armed. 2. Verifying that with the system armed, engine start is achievable and that the system is disarmed after clutch engagement. This confirms that engine restarts can be accomplished after an in-flight engine failure. 3. Verifying the system can be disarmed by pulling the circuit breaker. IF THIS TEST FAILS, FOLLOW THE TROUBLE SECT. 7 END TEST 6. REMOVING PARTS The Starter Interrupt kit may be overridden such as during replacement of the position switch S1, Relay R1 or R2. If the aircraft needs to be flown while replacement of parts is procured, this is accomplished by pulling the circuit breaker marked “AKV RHSI” and installing a zip tie under the circuit breaker head to prevent energizing the breaker until replacement parts have been installed. AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 Page 9 of 31 NOTE: The instrument panel must be placarded with the system being inoperative to advise the pilot NOTE: If the Starter Interrupt kit is to no longer be used, it must be removed in its integrity 7. TROUBLESHOOTING The troubleshooting table provides the mechanic with guidance for diagnosing malfunctions and the recommended course of action to remedy the fault. Additional help can be found in the Inspection Task (operational task) starting on Pg. 7 or by contacting AKV. See Page 1 for support contact information. Fault Probable Cause Action Test failure 1. Check Circuit Breaker has not popped 2. Position switch S1 out of position 3. FCU Position switch S2 out of position 4. Position switch S1 or S2 is bad. 5. Amber light L1 failure 6. Relay R1 or R2 failure 1. Reset Circuit Breaker. If it does not reset, check for wiring short. 2. Check position switch S1 is adjusted Correctly 3. Check FCU position switch S2 is adjusted Correctly and there is proper ground bonding of the switch thru the bracket to airframe ground. 4. If correctly adjusted, replace position switch S1 or S2. 5. Replace L1 bulb 6. Replace Relay R1 or R2 NOTE: If the above actions do not resolve the issue, contact AKV for additional assistance 8. WEIGHT AND BALANCE CHANGES No effect to weight and balance AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 10 of 32 BLANK AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision Instructions for Continued Airworthiness Nov.10th, 2020 11 of 32 Appendix A INSTALLATION DIAGRAMS This chart is a list of applicable drawings found in the MDL RHSI-002 for the R44 DRAWING# TITLE REV DATE RH-102 sht 1 R66 WIRING DIAGRAM NC 8/26/20 RH-102 sht 2 R66 WIRING HARNESS ARRANGEMENT DIAGRAM NC 8/26/20 RH-102 sht 3 R66 WIRING HARNESS ARRANGEMENT DIAGRAM NC 8/26/20 RH-102 sht 4 R66 WIRING HARNESS ARRANGEMENT DIAGRAM NC 8/26/20 RH-102 sht 5 R66 WIRING ROUTING DIAGRAM NC 8/26/20 RH-102 sht 6 R66 WIRING ROUTING DIAGRAM NC 8/26/20 RH-105 sht 1 R66 COVER REMOVALS NC 8/26/20 RH-105 sht 2 R66 MICRO SWITCH S1 AND BRACKET NC 8/26/20 RH-105 sht 3 R66 MICRO SWITCH S1 AND BRACKET NC 8/26/20 RH-105 sht 4 R66 MICRO SWITCH S1 AND BRACKET NC 8/26/20 RH-105 sht 5 R66 RELAY INSTALLATION NC 8/26/20 RH-105 sht 6 R66 INDICATOR LAMP INSTALLATION NC 8/26/20 RH-105 sht 7 R66 FUEL CONTROL SWITCH INSTALLATION NC 8/26/20 RH-105 sht 8 R66 FUEL CONTROL SWITCH ASSY. NC 8/26/20 RH-105 sht 9 R66 FUEL CONTROL SWITCH EXPLOSION DETAIL NC 8/26/20 RH-105 sht 10 R66 FUEL CONTROL WIRING AND SETUP NC 8/26/20 RH-109 sht 1 RHSI LABEL CB NC 8/26/20 RH-109 sht 2 RHSI LABEL R1 NC 8/26/20 RH-109 sht 3 RHSI LABEL R2 NC 8/26/20 RH-109 sht 4 RHSI LABEL L1 PTT NC 8/26/20 RH-109 sht 5 RHSI LABEL ANNUNCIATOR NC 8/26/20 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 12 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 13 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 14 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 15 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 16 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 17 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 18 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 19 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 20 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 21 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 22 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 23 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 24 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 25 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 26 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 27 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 28 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 29 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 30 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 31 of 32 AKV, Inc RHSI-R66-ICA Robinson Helicopter Starter Interrupt kit P/N RHSI for the R66 Revision NC Instructions for Continued Airworthiness Sept. 14th, 2019 32 of 32