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Tm-1-1520-238-T-4  

• Section I. Troubleshooting Information – General
  • K. Wiring Information
  • Figure 1–1. Typical Terminal Board Connections
  • Section Ii. Troubleshooting Methods And Checks
  • 1–9 Roadmap Approach (Cont)
  • Section Iii. General Procedures – Summary
  • 1–12 During Troubleshooting (Cont)
  • 1–16. Electronic Equipment Test Facility (Eetf) Testable Lrus
  • 1–16 Electronic Equipment Test Facility (Eetf) Testable Lrus (Cont)
  • 1–17. Maintenance Headset Connection Procedure
  • 1–17. Maintenance Headset Connection Procedure (Cont)
• Chapter 2 Airframe
• Chapter 3 Landing Gear System
  • Section I. Equipment Description And Data
  • Figure 3–2. Mlg And Cross Tube Assembly
  • Figure 3–3. Trailing Arm Assembly
  • (4) Wheel And Tire Assembly
  • (2) Trailing Arm Assembly
  • (5) Wheel And Tire Assembly.
  • (5) Wheel And Tire Assembly.
  • Figure 3–8. Tail Wheel Lock Actuator System
  • Figure 3–9. Mlg Brake System
  • Figure 3–11. Wheel Brake Assembly And Brake Disc
  • 3–3. Equipment Data
  • Table 3–1. Landing Gear System Controls And Indicators
  • Section Ii. Theory Of Operation
  • (B) Trailing Arm Assembly.
  • (F) Wheel And Tire Assembly.
  • (D) Wheel And Tire Assembly
  • (E) Tail Wheel Lock Actuator System
  • Figure 3–15. Tail Wheel Lock/Unlock Actuator Electrical Operation
  • Figure 3–16. Mlg Brake System
  • (D) Parking Brake System.
  • Section Iii. Troubleshooting Procedures
  • Figure 3–18. Directional Control Pedals And Pilot Parking Brake Handle
  • 3–10. Main Landing Gear – Maintenance Operational Check (Cont)
  • 3–10. Main Landing Gear – Maintenance Operational Check (Cont)
  • 3–11. Tail Landing Gear – Maintenance Operational Check
  • Figure 3–20. Pilot Tail Wheel Panel And Tail Wheel Assembly
  • 3–11. Tail Landing Gear – Maintenance Operational Check (Cont)
  • 3–12. Left Or Right Main Wheel Assembly – Does Not Rotate Freely
  • 3–13. Pilot Brake – Is Not Firm Or Wheel Assembly Rotates (With 3–13 Pressure Applied)
  • 3–14. Parking Brake Handle – Retracts When Brakes Are Set To Park 3–14 (Brakes Do Not Set)
  • 3–15. Parking Brake Handle – Does Not Retract
  • 3–16. Cpg Brake – Is Not Firm Or Wheel Assembly Rotates (With Pressure 3–16 Applied)
  • 3–17. Uneven Tire Wear – Exists
  • 3–18. Tail Wheel Lock Actuator Locking Pin – Does Not Engage Locking 3–18 Plate Or Does Not Disengage From Locking Plate
  • 3–18. Tail Wheel Lock Actuator Locking Pin – Does Not Engage Locking 3–18 Plate Or Does Not Disengage From Locking Plate (Cont)
  • 3–19. Tail Wheel – Does Not Return To Centerline
  • 3–19. Tail Wheel – Does Not Return To Centerline (Cont)
  • Tm-1-1520-238-T-4_84
• Section I. Equipment Description And Data
  • 4–2. Location And Description Of Major Components (Cont)
  • Figure 4–3. Engine Anti–Ice Subsystem
  • (2) Engine Anti–Ice Subsystem
  • Figure 4–5. Engine Start Subsystem
  • (6) Engine Power Controls
  • Figure 4–7. Engine Power Controls
  • Figure 4–8. Engine Indicator Controllers
  • 4–3. Equipment Data
  • 4–4. Equipment Configuration
  • 4–6. Controls And Indicators
  • Table 4–1. Power Plants Controls And Indicators
  • Table 4–1. Power Plants Controls And Indicators (Cont)
  • Table 4–1. Power Plants Controls And Indicators (Cont)
  • Table 4–1. Power Plants Controls And Indicators (Cont)
  • Table 4–1. Power Plants Controls And Indicators (Cont)
  • Table 4–1. Power Plants Controls And Indicators (Cont)
  • Table 4–1. Power Plants Controls And Indicators (Cont)
  • Section Ii. Theory Of Operation
  • Figure 4–11. Power Plants Functional Block Diagram
  • Figure 4–12. Firewall Louver Assembly
  • (2) Engine Exhaust Subsystem
  • (3) Engine Anti–Ice
  • Figure 4–16. Anti–Ice And Start Bleed Valve Operation
  • (5) Power Quadrants
  • (C) Engine Turbine
  • Section Iii. Troubleshooting Procedures
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 4–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • 4–10. Power Plants – Power Up
  • Figure 4–21. Pilot Elec Pwr Panel
  • Figure 4–22. Pilot Center And Aft Circuit Breaker Panels
  • Figure 4–23. Pilot Ext Lt/Intr Lt Panel
  • 4–11. Power Plants – Power Down
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1)
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1) (Cont)
  • Figure 4–27. Cpg Power Quadrant
  • Figure 4–29. Pilot Caution/Warning Panel
  • Figure 4–30. Engine 1 Overboard Fuel Drain Locations
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1) (Cont)
  • Figure 4–32. Cpg Caution/Warning Panel
  • Figure 4–34. Pilot Instrument Panel (Left Side)
  • Figure 4–35. Cpg Instrument Panel (Right Side)
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1) (Cont)
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1) (Cont)
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1) (Cont)
  • 4–12. Power Plants – Maintenance Operational Check (Engine 1) (Cont)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • Figure 4–37. Overboard Fuel Drain Locations
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • 4–13. Power Plants – Maintenance Operational Check (Engine 2) (Cont)
  • M58-018-1b Sheet 1 Of 21
  • M58-018-2b Sheet 2 Of 21
  • M58-018-3c Sheet 3 Of 21
  • M58-018-4d Sheet 4 Of 21
  • M58-018-5d Sheet 5 Of 21
  • M58-018-6c Sheet 6 Of 21
  • M58-018-7c Sheet 7 Of 21
  • M58-018-8b Sheet 8 Of 21
  • M58-018-9d Sheet 9 Of 21
  • Tm-1-1520-238-T-4_165
  • M58-018-11d Sheet 11 Of 21
  • M58-018-12c Sheet 12 Of 21
  • M58-018-13b Sheet 13 Of 21
  • M58-018-14b Sheet 14 Of 21
  • M58-018-15a Sheet 15 Of 21
  • M58-018-16b Sheet 16 Of 21
  • M58-018-17d Sheet 17 Of 21
  • Tm-1-1520-238-T-4_173
  • M58-018-19b Sheet 19 Of 21
  • M58-018-20b Sheet 20 Of 21
  • M58-018-21b Sheet 21 Of 21
  • 4–15. Torque Sharing System – Maintenance Operational Check
  • 4–15. Torque Sharing System – Maintenance Operational Check (Cont
  • 4–16. Torque Sharing System – Wiring Interconnect Diagram
  • 4–17. Engine 1 Torque Indication Is Lower Than Engine 2 Torque Indication 4–17 (Indications Not Within 5% Of Each Other)
  • 4–18. Engine 2 Torque Indication Is Lower Than Engine 1 Torque Indication 4–18 (Indications Not Within 5% Of Each Other)
  • 4–19. Engine 1 – Does Not Accelerate To Or Remain Between 23% And 25% Ng 4–19 In Ign Ovrd
  • 4–19. Engine 1 – Does Not Accelerate To Or Remain Between 23% And 25% Ng 4–19 In Ign Ovrd (Cont)
  • 4–20. Eng Start Circuit Breaker – Does Not Stay Closed (With Eng Start No 1 4–20 Switch In Start Position)
  • 4–20. Eng Start Circuit Breaker – Does Not Stay Closed (With Eng Start No 1 4–20 Switch In Start Position) (Cont)
  • 4–20. Eng Start Circuit Breaker – Does Not Stay Closed (With Eng Start No 1 4–20 Switch In Start Position) (Cont)
  • Tm-1-1520-238-T-4_187
  • 4–22. Eng Start Eng No 1 Indicator – Remains Lighted Above 52% Ng
  • 4–23. Engine 1 Out Indicators – Are Lighted With Engine 1 Running
  • 4–24. Engine 1 Ng – Does Not Remain Stable With Ckt A Switch Closed
  • 4–25. Engine 1 Ng – Does Not Remain Stable With Ckt B Switch Closed
  • 4–26. Engine 1 Ng – Does Not Decrease With Ckt A And Ckt B Switches 4–26 Closed
  • 4–27. Chips Eng 1 Indicator – Is Lighted
  • 4–28. Oil Byp Eng 1 Indicator – Is Lighted
  • 4–29. Fuel Byp Eng 1 Indicator – Is Lighted
  • 4–30. Fuel Psi Eng 1 Indicator – Is Lighted
  • 4–31. Cpg Engine No 1 Pwr Lever – Cannot Be Advanced To Lockout
  • 4–32. Pilot Engine Chop Indicator – Does Not Light With Pilot Collective Stick 4–32 In Chop
  • Tm-1-1520-238-T-4_199
  • 4–34. Cpg Engine Chop Indicator – Does Not Light With Cpg Collective Stick 4–34 In Chop
  • 4–35. Cpg Collective Stick – Does Not Reset Chop Function
  • 4–36. Engine 2 – Does Not Accelerate To Or Remain Between 23% And 25% Ng 4–36 In Ign Ovrd
  • 4–36. Engine 2 – Does Not Accelerate To Or Remain Between 23% And 25% Ng 4–36 In Ign Ovrd (Cont)
  • 4–37. Eng Start Circuit Breaker – Does Not Stay Closed (With Eng Start No 2 4–37 Switch In Start Position)
  • 4–38. Eng Start Eng 2 Indicator – Is Not Lighted With Engine 2 Started
  • Tm-1-1520-238-T-4_206
  • 4–40. Engine 2 Out Indicators – Are Lighted With Engine 2 Running
  • Tm-1-1520-238-T-4_208
  • 4–42. Engine 2 Ng – Does Not Remain Stable With Ckt B Switch Closed
  • 4–43. Engine 2 Ng – Does Not Decrease With Ckt A And B Switches Closed
  • 4–44. Chips Eng 2 Indicator – Is Lighted
  • 4–45. Oil Byp Eng 2 Indicator – Is Lighted
  • 4–46. Fuel Byp Eng 2 Indicator – Is Lighted
  • 4–47. Fuel Psi Eng 2 Indicator – Is Lighted
  • 4–48. Cpg Engine No 2 Pwr Lever – Cannot Be Advanced To Lockout
  • 4–49. Engine 1 – Does Not Start
  • 4–49. Engine 1 – Does Not Start (Cont)
  • 4–50. Engine 2 – Does Not Start
  • 4–50. Engine 2 – Does Not Start (Cont)
  • 4–51. Oil Psi Eng 1 Indicator – Is Lighted With Engine Oil Psi X 10 Indicating 4–51 More Than 22 Psi
  • 4–52. Oil Psi Eng 2 Indicator – Is Lighted With Engine Oil Psi X10 Indicating 4–52 More Than 22 Psi
  • 4–53. Emerg Pwr Indicator – Is Not Lighted With Ckt B Switch Set To Eng 1
  • 4–53. Emerg Pwr Indicator – Is Not Lighted With Ckt B Switch Set To Eng 1 (Cont)
  • 4–54. Emerg Pwr Indicator – Is Not Lighted With Ckt B Switch Set To Eng 2
  • 4–54. Emerg Pwr Indicator – Is Not Lighted With Ckt B Switch Set To Eng 2 (Cont)
  • 4–55. Ecs Airflow Present – With Eng Start No 1 Switch At Ign Ovrd
  • 4–55. Ecs Airflow Present – With Eng Start No 1 Switch At Ign Ovrd (Cont)
  • 4–56. Ecs Airflow Present – With Eng Start No 2 Switch At Ign Ovrd
  • 4–56. Ecs Airflow Present – With Eng Start No 2 Switch At Ign Ovrd (Cont)
  • 4–57. Excessive Torsional Vibration And Nr Droop Occurs During Flight – 4–57 (Engine 1 Np Lags Behind Engine 2 Np During Recovery Maneuver)
  • 4–57. Excessive Torsional Vibration And Nr Droop Occurs During Flight – 4–57 (Engine 1 Np Lags Behind Engine 2 Np During Recovery Maneuver) (Cont)
  • 4–58. Excessive Torsional Vibration And Nr Droop Occurs During Flight – 4–58 (Engine 2 Np Lags Behind Engine 1 Np During Recovery Maneuver)
  • 4–58. Excessive Torsional Vibration And Nr Droop Occurs During Flight – 4–58 (Engine 2 Np Lags Behind Engine 1 Np During Recovery Maneuver) (Cont)
  • 4–59. Engine 1 Does Not Restart – Ckt A And Ckt B Switches Released
  • 4–59. Engine 1 Does Not Restart – Ckt A And Ckt B Switches Released (Cont)
  • 4–60. Engine 2 Does Not Restart – Ckt A And Ckt B Switches Released
  • 4–60. Engine 2 Does Not Restart – Ckt A And Ckt B Switches Released (Cont)
  • 4–61. Pilot Power Quadrant Panel Edge–Light – Does Not Light
  • 4–62. Cpg Power Quadrant Panel Edge–Light – Does Not Light
• Chapter 5 Rotors
  • Section I. Equipment Description And Data
  • Figure 5–1. Rotor System
  • Figure 5–2. Main Rotor Head Assembly
  • Figure 5–3. Main Rotor Blade Assembly
  • Figure 5–4. Tail Rotor Assembly
  • 5–3. Equipment Data
  • Table 5–1. Rotor System Controls And Indicators
  • Table 5–1. Rotor System Controls And Indicators (Cont)
  • Section Ii. Theory Of Operation
  • Figure 5–8. Rotor System Block Diagram
  • Section Iii. Troubleshooting Procedures
  • 5–18. Recommended Steps Prior To Aircraft Operation
  • 5–19. Ground Track And Adjustment Using Ava Equipment
  • B. Perform Ground Track (Gndtrk) Measurement
  • C. Adjustment Of Pitch Links
  • 5–20. Initial Check And Adjustment Using Ava Equipment
  • B. Perform Initial Measurement
  • D. Comparing Moves Between Flights
  • E. Weight Adjustment
  • C. Inspection
  • 5–21. Flight Check And Adjustment Using Ava Equipment
  • 5–21. Flight Check And Adjustment Using Ava Equipment (Cont)
  • 5–21. Flight Check And Adjustment Using Ava Equipment (Cont)
  • Figure 5–19. Ava Track Trend
  • Figure 5–20. Polar Chart
  • Figure 5–21. Ah–64 Vertical Effect For Tab Changes
  • Figure 5–23. Ah–64 Lateral Effect For Weight Changes
  • Custom Solutions
  • Utilizing The Maximum # Of Adjustments
  • Figure 5–24. Ava Vibration Trend
  • Figure 5–25. Before And After Vibration Levels On Ava
  • D. Trim Tab Adjustments
  • 5–22. Main Rotor Track And Balance Troubleshooting Using 5–22 Ava Equipment
  • 5–23. Tail Rotor Balance – Maintenance Operational Check Using 5–23 Ava Equipment
  • 5–23. Tail Rotor Balance – Maintenance Operational Check Using 5–23 Ava Equipment (Cont)
  • 5–23. Tail Rotor Balance – Maintenance Operational Check Using 5–23 Ava Equipment (Cont)
  • 5–23. Tail Rotor Balance – Maintenance Operational Check Using 5–23 Ava Equipment (Cont)
  • 5–24. Isolating/Monitoring Other Vibrations Using Ava Equipment
  • Spectrums
  • 5–24. Isolating/Monitoring Other Vibrations Using Ava Equipment (Cont)
  • B. Install Accelerometer
  • 5–24. Isolating/Monitoring Other Vibrations Using Ava Equipment (Cont)
• Chapter 6 Drive System
  • Section I. Equipment Description And Data
  • A. Engine Ngb Assemblies
  • Figure 6–3. Main Transmission Assembly
  • Figure 6–4. Igb Assembly
  • Figure 6–5. Tgb Assembly
  • E. Drive Shaft Assembly
  • Figure 6–6. Drive Shaft Assembly
  • 6–3. Equipment Data
  • Table 6–1. Drive System Controls And Indicators
  • Table 6–1. Drive System Controls And Indicators (Cont)
  • Table 6–1. Drive System Controls And Indicators (Cont)
  • Table 6–1. Drive System Controls And Indicators (Cont)
  • Section Ii. Theory Of Operation
  • (2) Accessory Drive Section
  • (5) Engine Ngb Assembly
  • (E) An Engine Ngb Cooling Fan
  • (6) Main Transmission Assembly
  • (E) The Accessory Lubrication System
  • (7) Transducers And Switches
  • Figure 6–11. Lubrication System
  • Section Iii. Troubleshooting Procedures
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • Table 6–2. Electrical Component Location And Configuration (Eclc) Index Listing (Cont)
  • 6–10. Drive System – Power Up
  • Figure 6–14. Pilot Elec Pwr Panel And Cpg Circuit Breaker Panel 1
  • Figure 6–15. Pilot Forward, Center, And Aft Circuit Breaker Panels
  • Figure 6–16. Cpg Fire Control Panel
  • 6–11. Drive System – Power Down
  • 6–12. Drive System – Indicators Maintenance Operational Check
  • Figure 6–18. Cpg Caution/Warning Panel
  • Figure 6–19. Master Caution/Warning Panel
  • 6–12. Drive System – Indicators Maintenance Operational Check (Cont)
  • 6–12. Drive System – Indicators Maintenance Operational Check (Cont)
  • 6–12. Drive System – Indicators Maintenance Operational Check (Cont)
  • 6–13. Drive System – Dynamic Maintenance Operational Check
  • 6–13. Drive System – Dynamic Maintenance Operational Check
  • 6–13. Drive System – Dynamic Maintenance Operational Check (Cont)
  • Figure 6–20. Cpg Hod
  • 6–13. Drive System – Dynamic Maintenance Operational Check (Cont)
  • 6–13. Drive System – Dynamic Maintenance Operational Check (Cont)
  • 6–13. Drive System – Dynamic Maintenance Operational Check (Cont)
  • Figure 6–21. Engine Ngbs Sight Gage And Typical Differential Pressure Indicator
  • M58-014-1c Sheet 1 Of 11
  • M58-014-2c Sheet 2 Of 11
  • M58-014-3e Sheet 3 Of 11
  • M58-014-4b Sheet 4 Of 11
  • M58-014-5c Sheet 5 Of 11
  • M58-014-6b Sheet 6 Of 11
  • M58-014-7e Sheet 7 Of 11
  • M58-014-8d Sheet 8 Of 11
  • M58-014-9c Sheet 9 Of 11
  • M58-014-10b Sheet 10 Of 11
  • M58-014-11a Sheet 11 Of 11
  • Section Ii. Troubleshooting Methods And Checks
  • 6–15. Hod Ngb 1 Reading – Displays 0 Lb Oil Pressure (Cont)
  • 6–15.1. Hod Ngb Reading – Displays 50 Lb Oil Pressure
  • 6–15.2. Hod Ngb 1 Reading – Displays >99 Lb Oil Pressure
  • 6–15.3. Hod Ngb 1 Reading – Displays 54 Lb Oil Pressure Or Less
  • 6–16. Hod Xmn 1 Reading – Displays 0 Lb Oil Pressure
  • 6–16.1. Hod Xmn 1 Reading – Displays 50 Lb Oil Pressure
  • 6–16.2. Hod Xmn 1 Reading – Displays >99 Lb Oil Pressure
  • 6–16.3. Hod Xmn 1 Reading – Displays 49 Lb Oil Pressure Or Less
  • 6–16.3. Hod Xmn 1 Reading – Displays 49 Lb Oil Pressure Or Less (Cont)
  • 6–17. Hod Xmn 2 Reading – Displays 0 Lb Oil Pressure
  • 6–17.1. Hod Xmn 2 Reading – Displays 50 Lb Oil Pressure
  • 6–17.2. Hod Xmn 2 Reading – Displays >99 Lb Oil Pressure
  • 6–17.3. Hod Xmn 2 Reading – Displays 49 Lb Oil Pressure Or Less
  • 6–17.3. Hod Xmn 2 Reading – Displays 49 Lb Oil Pressure Or Less (Cont)
  • 6–18. Hod Ngb 2 Reading – Displays 0 Lb Oil Pressure
  • 6–18. Hod Ngb 2 Reading – Displays 0 Lb Oil Pressure (Cont)
  • 6–18.1. Hod Ngb 2 Reading – Displays 50 Lb Oil Pressure
  • 6–18.2. Hod Ngb 2 Reading – Displays >99 Lb Oil Pressure
  • 6–18.3. Hod Ngb 2 Reading – Displays 54 Lb Oil Pressure Or Less
  • 6–19. Hod Ngb 1 Reading – Does Not Display Ambient Temperature
  • 6–19.1. Hod Ngb 1 Reading – Displays –31 °C Temperature
  • 6–19.2. Hod Ngb 1 Reading – Displays High Oil Temperature
  • 6–20. Hod Xmn 1 Reading – Does Not Display Ambient Temperature
  • 6–20.1. Hod Xmn 1 Reading – Displays –31 °C Temperature
  • 6–20.2. Hod Xmn 1 Reading – Displays High Oil Temperature
  • 6–21. Hod Xmn 2 Reading – Does Not Display Ambient Temperature
  • 6–21.1. Hod Xmn 2 Reading – Displays –31 °C Temperature
  • 6–21.2. Hod Xmn 2 Reading – Displays High Oil Temperature
  • 6–22. Hod Ngb 2 Reading – Does Not Display Ambient Temperature
  • 6–22.1. Hod Ngb 2 Reading – Displays –31 °C Temperature
  • 6–22.2. Hod Ngb 2 Reading – Displays High Oil Temperature
  • 6–22.3. Hod Display – Reads –32 °C For All Gearboxes
  • 6–22.3. Hod Display – Reads –32 °C For All Gearboxes (Cont)
  • 6–23. Oil Psi Acc Pump Indicator – Does Not Light With Electrical Power Applied 6–23 And All Power Plants Off
  • 6–24. Chips Main Xmsn Indicator – Lights
  • 6–25. Oil Hot Main Xmsn 1 Indicator – Lights
  • 6–26. Oil Hot Main Xmsn 2 Indicator – Lights
  • 6–27. Oil Psi Main Xmsn 1 Indicator – Does Not Light With Electrical Power 6–27 Applied And All Power Plants Off
  • 6–28. Oil Psi Main Xmsn 2 Indicator – Does Not Light With Electrical Power 6–28 Applied And All Power Plants Off
  • 6–29. Temp Int Indicator – Lights
  • 6–29. Temp Int Indicator – Lights (Cont)
  • 6–30. Temp Tr Indicator – Lights
  • 6–30. Temp Tr Indicator – Lights (Cont)
  • 6–31. Oil Hot Nose Grbx 1 Indicator – Lights
  • 6–32. Oil Hot Nose Grbx 2 Indicator – Lights
  • 6–33. Oil Psi Nose Grbx 1 Indicator – Does Not Light With Electrical Power 6–33 Applied And All Power Plants Off
  • 6–34. Oil Psi Nose Grbx 2 Indicator – Does Not Light With Electrical Power 6–34 Applied And All Power Plants Off
  • 6–35. Chips Nose Grbx 1 Indicator – Lights
  • 6–36. Chips Nose Grbx 2 Indicator – Lights
  • 6–37. Pilot Low Rpm Rotor Indicator – Does Not Light With Electrical Power 6–37 Applied And All Power Plants Off
  • 6–38. Cpg Low Rpm Rotor Indicator – Does Not Light With Electrical Power 6–38 Applied And All Power Plants Off
  • 6–39. High Rpm Rotor Indicator – Lights
  • 6–40. Eng Cut Circuit Breaker – Does Not Stay Closed
  • 6–41. Vib Grbx Indicator – Lights With Electrical Power Applied And All 6–41 Power Plants Off
  • 6–42. Oil Psi Acc Pump Indicator – Lights
  • 6–42. Oil Psi Acc Pump Indicator – Lights (Cont)
  • 6–43. Vib Mon Circuit Breaker (Cb79) – Does Not Stay Closed
  • 6–45. Hod Ngb 1 Reading – Displays 28 Lb Or Less Oil Pressure
  • 6–45. Hod Ngb 1 Reading – Displays 28 Lb Or Less Oil Pressure (Cont)
  • 6–46. Hod Ngb 1 Reading – Displays Low Oil Pressure
  • 6–47. Oil Psi Nose Grbx 1 Indicator – Is Lighted When Hod Displays Normal 6–47 Ngb 1 Oil Pressure
  • 6–47. Oil Psi Nose Grbx 1 Indicator – Is Lighted When Hod Displays Normal 6–47 Ngb 1 Oil Pressure (Cont)
  • 6–48. Oil Psi Nose Grbx 1 Indicator – Is Lighted When Hod Displays Low Ngb 1 6–48 Oil Pressure
  • 6–49. Hod Xmn 1 Reading – Displays 28 Lb Or Less Oil Pressure
  • 6–49. Hod Xmn 1 Reading – Displays 28 Lb Or Less Oil Pressure (Cont)
  • 6–50. Hod Xmn 1 Reading – Displays Low Oil Pressure
  • 6–51. Oil Psi Main Xmsn 1 Indicator – Is Lighted When Hod Displays Normal 6–51 Xmn 1 Oil Pressure
  • 6–51. Oil Psi Main Xmsn 1 Indicator – Is Lighted When Hod Displays Normal 6–51 Xmn 1 Oil Pressure (Cont)
  • 6–52. Oil Psi Main Xmsn 1 Indicator – Is Lighted When Hod Displays Low Xmn 1 6–52 Oil Pressure
  • 6–53. Hod Xmn 2 Reading – Displays 28 Lb Or Less Oil Pressure
  • 6–53. Hod Xmn 2 Reading – Displays 28 Lb Or Less Oil Pressure (Cont)
  • 6–54. Hod Xmn 2 Reading – Displays Low Oil Pressure
  • 6–55. Oil Psi Main Xmsn 2 Indicator – Is Lighted When Hod Displays Normal 6–55 Xmn 2 Oil Pressure
  • 6–55. Oil Psi Main Xmsn 2 Indicator – Is Lighted When Hod Displays Normal 6–55 Xmn 2 Oil Pressure (Cont)
  • 6–56. Oil Psi Main Xmsn 2 Indicator – Is Lighted When Hod Displays Low Xmn 2 6–56 Oil Pressure
  • 6–57. Hod Ngb 2 Reading – Displays 28 Lb Or Less Oil Pressure
  • 6–57. Hod Ngb 2 Reading – Displays 28 Lb Or Less Oil Pressure (Cont)
  • 6–58. Hod Ngb 2 Reading – Displays Low Oil Pressure
  • 6–59. Oil Psi Nose Grbx 2 Indicator – Is Lighted When Hod Displays Normal 6–59 Ngb 2 Oil Pressure
  • 6–59. Oil Psi Nose Grbx 2 Indicator – Is Lighted When Hod Displays Normal 6–59 Ngb 2 Oil Pressure (Cont)
  • 6–60. Oil Psi Nose Grbx 2 Indicator – Is Lighted When Hod Displays Low Ngb 2 6–60 Oil Pressure
  • 6–60.1. Hod Ngb 1 Reading – Displays 140° C Or Higher Oil Temperature
  • 6–60.1. Hod Ngb 1 Reading – Displays 140° C Or Higher Oil Temperature (Cont)
  • 6–61. Hod Ngb 1 Reading – Displays High Oil Temperature
  • 6–62. Oil Hot Nose Grbx 1 Indicator – Is Lighted When Hod Displays Normal 6–62 Ngb 1 Oil Temperature
  • 6–62. Oil Hot Nose Grbx 1 Indicator – Is Lighted When Hod Displays Normal 6–62 Ngb 1 Oil Temperature (Cont)
  • 6–63. Oil Hot Nose Grbx 1 Indicator – Is Lighted When Hod Displays High Ngb 1 6–63 Oil Temperature
  • 6–64. Hod Xmn 1 Reading – Displays 140° C Or Higher Oil Temperature
  • 6–64. Hod Xmn 1 Reading – Displays 140° C Or Higher Oil Temperature (Cont)
  • 6–65. Hod Xmn 1 Reading – Displays High Oil Temperature
  • 6–66. Oil Hot Main Xmsn 1 Indicator – Is Lighted When Hod Displays Normal 6–66 Xmn 1 Oil Temperature
  • 6–66. Oil Hot Main Xmsn 1 Indicator – Is Lighted When Hod Displays Normal 6–66 Xmn 1 Oil Temperature (Cont)
  • 6–67. Oil Hot Main Xmsn 1 Indicator – Is Lighted When Hod Displays High Xmn 1 6–67 Oil Temperature
  • 6–68. Hod Xmn 2 Reading – Displays 140° C Or Higher Oil Temperature
  • 6–68. Hod Xmn 2 Reading – Displays 140° C Or Higher Oil Temperature (Cont)
  • 6–69. Hod Xmn2 Reading – Displays High Oil Temperature
  • 6–70. Oil Hot Main Xmsn 2 Indicator – Is Lighted When Hod Displays Normal Xmn 2 6–70 Oil Temperature
  • 6–70. Oil Hot Main Xmsn 2 Indicator – Is Lighted When Hod Displays Normal Xmn 2 6–70 Oil Temperature (Cont)
  • 6–71. Oil Hot Main Xmsn 2 Indicator – Is Lighted When Hod Displays High Xmn 6–71 2 Oil Temperature
  • 6–72. Hod Ngb 2 Reading – Displays 140° C Or Higher Oil Temperature
  • 6–72. Hod Ngb 2 Reading – Displays 140° C Or Higher Oil Temperature (Cont)
  • 6–73. Hod Ngb 2 Reading – Displays High Oil Temperature
  • 6–74. Oil Hot Nose Grbx 2 Indicator – Is Lighted When Hod Displays Normal 6–74 Ngb 2 Oil Temperature
  • 6–74. Oil Hot Nose Grbx 2 Indicator – Is Lighted When Hod Displays Normal 6–74 Ngb 2 Oil Temperature (Cont)
  • 6–75. Oil Hot Nose Grbx 2 Indicator – Is Lighted When Hod Displays High Ngb 2 6–75 Oil Temperature
  • 6–76. Chips Nose Grbx 1 Indicator – Lights
  • 6–77. Chips Nose Grbx 2 Indicator – Lights
  • 6–78. Temp Int Indicator – Lights
  • 6–78. Temp Int Indicator – Lights (Cont)
  • 6–79. Temp Tr Indicator – Lights
  • 6–79. Temp Tr Indicator – Lights (Cont)
  • 6–80. Ngb Oil Loss Is Indicated
  • 6–81. Drive System – Vibration Maintenance Operational Check
  • 6–81. Drive System – Vibration Maintenance Operational Check (Cont)
  • 6–81. Drive System – Vibration Maintenance Operational Check (Cont)
  • 6–82. Low Rpm Rotor Indicators – Remain Lighted Above 93% Nr
  • 6–83. Pilot Low Rpm Rotor Indicator – Does Not Light At 93% Or Less
  • 6–84. Cpg Low Rpm Rotor Indicator – Does Not Light At 93% Or Less
  • 6–85. Pilot High Rpm Rotor Indicator – Does Not Light At 104% Nr (Acv)
  • 6–85.1. Pilot High Rpm Rotor Indicator – Does Not Light At 108% Nr (Acw)
  • 6–85.2. Cpg High Rpm Rotor Indicator – Does Not Light At 108% Nr (Acw)
  • 6–86. Cpg High Rpm Rotor Indicator – Does Not Light At 104% Nr (Acv)
  • 6–87. Vib Grbx Indicator – Lights
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