2A552 CDC Vol 3 H60

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  • 1/100 Questions

    (408) What type of hydraulic leakage is defined as “Fluid leakage is such that hydraulic reservoir levels may be dangerously lowered or depleted during normal operation, or a fire hazard may be created, or the air worthiness of the helicopter may be otherwise affected”?

    • Excessive.
    • Allowable.
    • Negligible.
    • Maximum.
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Aircraft Maintenance Quizzes & Trivia
About This Quiz

This quiz assesses knowledge on the H-60 helicopter, focusing on system cooling, vibration absorbers, and landing gear mechanisms. It's designed for military aircraft maintenance personnel to ensure operational proficiency and safety.

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  • 2. 

    (427) On an H–60, what screw threaded component’s procedures are identified by ** SC **?

    • Safety Critical.

    • Sole Component.

    • Same Component.

    • Safety Compliance.

    Correct Answer
    A. Safety Critical.
    Explanation
    The correct answer is "Safety Critical." The procedures identified by ** SC ** on an H-60 refer to safety critical components. These components are crucial for the safe operation of the aircraft and require special attention and procedures to ensure their proper functioning.

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  • 3. 

    (430) The type of fuel pressure the T700 engine electrical filter bypass sensor senses is

    • Gage.

    • Absolute.

    • Excursion.

    • Differential.

    Correct Answer
    A. Differential.
    Explanation
    The T700 engine electrical filter bypass sensor senses the differential fuel pressure. This means that it measures the difference in pressure between the fuel entering the engine and the fuel returning to the fuel tank. This information is important for monitoring the efficiency and performance of the engine's fuel system.

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  • 4. 

    (421) To perform continuity and voltage checks on H–60 electrical systems, you would use

    • A test light.

    • A multimeter.

    • A jumper wire.

    • An electrodialysis meter.

    Correct Answer
    A. A multimeter.
    Explanation
    A multimeter is the most suitable tool for performing continuity and voltage checks on H-60 electrical systems. A test light can only indicate the presence of voltage but cannot measure it accurately. A jumper wire is used to bypass a component temporarily, while an electrodialysis meter is not a commonly used tool for electrical system checks. Therefore, a multimeter, which can measure voltage and check for continuity accurately, is the correct choice for this task.

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  • 5. 

    (439) What aircraft can the H–60 be air shipped on?

    • AN–26, MI–17.

    • C–130, C–5.

    • C–12, C–123.

    • C–17, C–5.

    Correct Answer
    A. C–17, C–5.
    Explanation
    The H-60 aircraft can be air shipped on C-17 and C-5 aircraft. These two aircraft are capable of carrying large cargo and have the necessary size and capacity to transport the H-60. The C-17 and C-5 are commonly used for military transport and are designed to handle heavy loads, making them suitable for transporting the H-60.

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  • 6. 

    (409) When the explosive squib is fired, the H–60 CARGO HOOK OPEN light will extinguish when

    • The hook opens.

    • The hook closes.

    • A new squib is installed.

    • The hook open lever is reset.

    Correct Answer
    A. A new squib is installed.
    Explanation
    When the explosive squib is fired, it causes the hook to open. The H-60 CARGO HOOK OPEN light is illuminated to indicate that the hook is open. However, when a new squib is installed, it means that the old squib has been replaced with a new one. This replacement does not affect the status of the hook, so the H-60 CARGO HOOK OPEN light will extinguish, regardless of whether the hook is open or closed.

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  • 7. 

    (403) The attachment point for the tail wheel assembly on the H–60 tail landing gear is the

    • Fork assembly.

    • Axle assembly.

    • Yoke assembly.

    • Shock strut.

    Correct Answer
    A. Fork assembly.
    Explanation
    The correct answer is the fork assembly. The attachment point for the tail wheel assembly on the H-60 tail landing gear is the fork assembly. This component is responsible for connecting the tail wheel to the rest of the landing gear system. The fork assembly allows for the tail wheel to pivot and move as needed during landing and taxiing operations.

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  • 8. 

    (409) The explosive cartridge (squib) on the H–60 cargo hook is used to

    • Jettison the hook latch.

    • Separate the hook from the aircraft.

    • Release the load during normal flight.

    • Release the load during an emergency.

    Correct Answer
    A. Release the load during an emergency.
    Explanation
    The explosive cartridge on the H-60 cargo hook is used to release the load during an emergency. This means that in a critical situation, such as a crash or other emergency landing, the explosive cartridge is activated to quickly release the load being carried by the cargo hook. This allows for a safer and faster evacuation of the aircraft.

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  • 9. 

    (410) To avoid injury and prevent cable fouling when raising or lowering the rescue hoist cable on an H–60, you should use

    • Rubber gloves and maintain tension on the cable.

    • Leather gloves and maintain tension on the cable.

    • Rubber gloves and avoid having tension on the cable.

    • Leather gloves and avoid having tension on the cable.

    Correct Answer
    A. Leather gloves and maintain tension on the cable.
    Explanation
    Using leather gloves when raising or lowering the rescue hoist cable on an H-60 helicopter is important to avoid injury and prevent cable fouling. Leather gloves provide better grip and protection against abrasion and cuts compared to rubber gloves. Maintaining tension on the cable is also crucial to ensure smooth and controlled movement, reducing the risk of entanglement or accidents. Therefore, using leather gloves and maintaining tension on the cable is the correct approach to ensure safety during hoist operations.

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  • 10. 

    (424) A main rotor (MR) blade on an H–60 is allowed to move about its axis for pitch changes by the

    • Elastomeric bearing.

    • Hydraulic dampers.

    • Hub sleeve.

    • Blade grip.

    Correct Answer
    A. Elastomeric bearing.
    Explanation
    The main rotor blade on an H-60 is allowed to move about its axis for pitch changes by the elastomeric bearing. The elastomeric bearing is a type of bearing made from a rubber-like material that provides flexibility and allows for movement. In this case, it allows the rotor blade to pivot and change its angle of attack, which is necessary for controlling the helicopter's lift and maneuverability. The hydraulic dampers, hub sleeve, and blade grip are not directly involved in pitch changes and do not provide the necessary flexibility for the blade's movement.

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  • 11. 

    (404) To avoid placing undue stress on the brake assembly when servicing the upper stage of the shock strut, you need to

    • Deflate the tire.

    • Set the parking brake.

    • Release the parking brake.

    • Use a skid plate under the tire.

    Correct Answer
    A. Release the parking brake.
    Explanation
    When servicing the upper stage of the shock strut, it is important to release the parking brake to avoid placing undue stress on the brake assembly. Releasing the parking brake ensures that the brake is not engaged and eliminates any resistance or tension that may be caused by the brake system. This allows for easier and safer servicing of the shock strut without risking damage to the brake assembly.

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  • 12. 

    (406) To operationally check the H–60 hydraulic system during ground operations, you use the

    • Backup hydraulic system.

    • Utility hydraulic system.

    • No. 1 hydraulic system.

    • No. 2 hydraulic system.

    Correct Answer
    A. Backup hydraulic system.
    Explanation
    To operationally check the H-60 hydraulic system during ground operations, the backup hydraulic system is used.

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  • 13. 

    (410) What is the most likely cause of a birdcaged rescue hoist cable on an H–60?

    • Hook bearing not rotating freely.

    • Cable getting caught in the cable guide.

    • Lifting more weight than the cable is rated for.

    • Cable rubbing against the other cable or other structural members.

    Correct Answer
    A. Hook bearing not rotating freely.
    Explanation
    The most likely cause of a birdcaged rescue hoist cable on an H-60 is the hook bearing not rotating freely. When the hook bearing does not rotate freely, it can cause the cable to become twisted and tangled, resulting in a birdcage. This can happen if the bearing is damaged, worn out, or not properly lubricated. When the cable is not able to rotate smoothly, it can lead to a loss of control and potentially dangerous situations during a rescue operation.

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  • 14. 

    (414) Flow of fuel in the H–60 fuel system is directed by the fuel

    • Flow transmitter.

    • Management package.

    • Directional transmitter.

    • Probe management package.

    Correct Answer
    A. Management package.
    Explanation
    The correct answer is "management package." The management package in the H-60 fuel system is responsible for directing the flow of fuel. It controls the movement of fuel through the system and ensures that it is distributed properly to the various components and engines. The management package plays a crucial role in maintaining the fuel system's efficiency and functionality.

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  • 15. 

    (411) On the H–60, the valve type used to mix engine or auxiliary power unit bleed-air with the ambient air to obtain the desired temperature is

    • Bleed-air mixing.

    • Engine air mixing.

    • Bleed-air regulating.

    • Engine air regulating.

    Correct Answer
    A. Bleed-air mixing.
    Explanation
    On the H-60, the valve type used to mix engine or auxiliary power unit bleed-air with the ambient air to obtain the desired temperature is called "bleed-air mixing." This valve is responsible for regulating the flow of bleed-air from the engine or auxiliary power unit and mixing it with the ambient air to achieve the desired temperature before it is distributed throughout the aircraft.

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  • 16. 

    (415) On the H–60, fuel will automatically transfer when

    • One main fuel tank is at 887 pounds and the other is at less than 1,000 pounds.

    • Both auxiliary fuel tank levels are less than 800 pounds.

    • Both main fuel tank levels are more than 1,050 pounds.

    • Both auxiliary fuel tanks are empty.

    Correct Answer
    A. One main fuel tank is at 887 pounds and the other is at less than 1,000 pounds.
    Explanation
    When one main fuel tank is at 887 pounds and the other is at less than 1,000 pounds, fuel will automatically transfer on the H-60.

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  • 17. 

    (424) When an H–60 damper and reservoir are fully serviced, the indicator will show full

    • Red.

    • Blue.

    • Gold.

    • Yellow.

    Correct Answer
    A. Gold.
    Explanation
    When an H-60 damper and reservoir are fully serviced, the indicator will show gold. This is because gold is commonly used to represent the "full" or "maximum" level in various indicators and gauges. In this case, the gold color indicates that the damper and reservoir have been completely serviced and are at their optimal level.

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  • 18. 

    (438) What is indicated if the red fire extinguisher thermal discharge indicator is missing?

    • Auxiliary power unit (APU) fire bottle has discharged.

    • Fire extinguisher bypass filter requires replacement.

    • One or both fire bottles have discharged.

    • Fire detector requires replacement.

    Correct Answer
    A. One or both fire bottles have discharged.
    Explanation
    If the red fire extinguisher thermal discharge indicator is missing, it indicates that one or both fire bottles have discharged. The thermal discharge indicator is a device that shows whether the fire extinguisher has been discharged due to excessive heat. Therefore, if the indicator is missing, it suggests that the fire extinguisher has been used and needs to be replaced.

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  • 19. 

    (402) The roll vibration absorbers on the H–60 are installed under the

    • Main landing gear drag beam support fairings.

    • Tail and main landing gear drag beam.

    • Main landing gear drag beam only.

    • Tail landing gear drag beam only.

    Correct Answer
    A. Main landing gear drag beam support fairings.
    Explanation
    The roll vibration absorbers on the H-60 are installed under the main landing gear drag beam support fairings. This means that the absorbers are located in a specific area, namely under the support fairings of the main landing gear drag beam. This placement helps to reduce roll vibrations, providing stability and smoother operation during flight.

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  • 20. 

    (428) The T700 engine module that extracts most of the energy from the exhaust gases for output power is the

    • Hot section.

    • Cold section.

    • Power turbine.

    • Accessory gearbox.

    Correct Answer
    A. Power turbine.
    Explanation
    The power turbine is the T700 engine module that extracts most of the energy from the exhaust gases for output power. This turbine is responsible for converting the high-pressure, high-temperature gases into mechanical energy, which is then used to drive the rotor system and generate power. The hot section and cold section are other components of the engine that play different roles in the overall functioning, but it is the power turbine that specifically extracts the energy from the exhaust gases. The accessory gearbox, on the other hand, is responsible for transmitting power to various engine accessories and does not directly extract energy from the exhaust gases.

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  • 21. 

    (430) The internal bypass flow in the T700 fuel boost pump provides approximately

    • Twice the minimum fuel-flow.

    • Twice the maximum fuel-flow.

    • Triple the minimum fuel-flow.

    • Triple the maximum fuel-flow.

    Correct Answer
    A. Twice the maximum fuel-flow.
    Explanation
    The internal bypass flow in the T700 fuel boost pump provides approximately twice the maximum fuel-flow. This means that the pump is capable of delivering fuel at a rate that is double the maximum flow rate required by the engine. The bypass flow allows for excess fuel to be diverted back to the fuel tank, ensuring that the engine receives a steady and consistent fuel supply.

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  • 22. 

    (416) When the H–60 refuel probe is extended, the fuel from the retract side of the probe flows to the

    • No. 1 main fuel tank.

    • No. 2 main fuel tank.

    • Internal auxiliary fuel tank.

    • External auxiliary fuel tank.

    Correct Answer
    A. No. 2 main fuel tank.
    Explanation
    When the H-60 refuel probe is extended, the fuel from the retract side of the probe flows to the No. 2 main fuel tank.

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  • 23. 

    (414) The type of self-sealing valves installed in the H–60 fuel lines to contain the fuel in case of a helicopter crash or malfunction is

    • Inertia.

    • Impact.

    • Shutoff.

    • Breakaway.

    Correct Answer
    A. Breakaway.
    Explanation
    Breakaway valves are installed in H-60 fuel lines to contain the fuel in case of a helicopter crash or malfunction. These valves are designed to separate or break away from the fuel line when a certain force or pressure is applied. This helps prevent fuel leakage and potential fires or explosions in the event of an accident. The breakaway feature allows the valves to disconnect and seal off the fuel flow, ensuring the safety of the helicopter and its occupants.

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  • 24. 

    (417) The item used as the dielectric in the H–60 fuel quantify indicating system is

    • Alternating current (AC) current.

    • Direct current (DC) current.

    • Fuel.

    • Air.

    Correct Answer
    A. Fuel.
    Explanation
    The correct answer is fuel. The H-60 fuel quantity indicating system requires a dielectric material to measure the fuel level. A dielectric is an insulating material that can store electrical energy. In this case, the fuel itself acts as the dielectric, allowing the system to measure the level of fuel based on its capacitance. Alternating current (AC) and direct current (DC) currents are not used as dielectric materials. Air is also not used as the dielectric in this system.

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  • 25. 

    (427) You are performing a tail rotor (TR) rig on an H–60. To do this properly you must have a bias of

    • 3 degrees.

    • 3 minutes.

    • 9 degrees.

    • 9 minutes.

    Correct Answer
    A. 3 degrees.
    Explanation
    The correct answer is 3 degrees. In a tail rotor (TR) rig on an H-60 helicopter, a bias of 3 degrees is required. This means that the tail rotor blades must be adjusted to have a 3-degree angle relative to the helicopter's longitudinal axis. This adjustment is necessary to ensure proper balance and performance of the helicopter during flight.

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  • 26. 

    (436) If the main transmission on an H–60 suffers a total oil loss, it can operate at cruise for

    • 5 minutes.

    • 15 minutes.

    • 30 minutes.

    • 45 minutes.

    Correct Answer
    A. 30 minutes.
    Explanation
    The correct answer is 30 minutes. In the event of a total oil loss in the main transmission of an H-60 helicopter, it can continue to operate at cruise speed for approximately 30 minutes. After this time, the lack of lubrication and cooling from the oil would likely cause significant damage to the transmission, resulting in a loss of power and potential failure. Therefore, it is crucial to address the oil loss issue as soon as possible to prevent further damage and ensure the safety of the aircraft and its occupants.

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  • 27. 

    (418) In comparison to other aircraft systems, troubleshooting the fuel system is more difficult because

    • The fuel system is more complex.

    • You must work with a team of mechanics.

    • The mechanical components are hard to access.

    • Schematics in the technical orders are hard to interpret.

    Correct Answer
    A. The mechanical components are hard to access.
    Explanation
    The correct answer is that the mechanical components are hard to access. This suggests that the difficulty in troubleshooting the fuel system is due to the challenge of physically reaching and examining the mechanical components of the system. This could be because they are located in tight or hard-to-reach spaces, requiring additional time and effort to access and inspect.

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  • 28. 

    (426) Longitudinal movement of the H–60 helicopter is accomplished by movement of the

    • Cyclic control.

    • Stabilator control.

    • Collective control.

    • Tail rotor (TR) control.

    Correct Answer
    A. Cyclic control.
    Explanation
    The correct answer is cyclic control. The cyclic control is a mechanism in a helicopter that allows the pilot to control the pitch and roll of the aircraft. By moving the cyclic control, the pilot can tilt the rotor disc in a specific direction, which creates a different amount of lift on each side of the rotor. This imbalance in lift causes the helicopter to tilt in the desired direction, resulting in longitudinal movement. The stabilator control is responsible for controlling the pitch of the stabilator, the collective control is used to control the overall lift of the helicopter, and the tail rotor control is used to counteract the torque produced by the main rotor.

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  • 29. 

    (409) The release mode that is not applicable to the H–60 cargo hook is

    • Emergency.

    • Standard.

    • Manual.

    • Normal.

    Correct Answer
    A. Standard.
    Explanation
    The H-60 cargo hook does not have a standard release mode. This means that the standard release mode is not applicable to the H-60 cargo hook.

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  • 30. 

    (421) What electrical check would you use to determine the amount of resistance (ohms) in a particular wire or component on an H–60?

    • Probe.

    • Ground.

    • Voltage.

    • Continuity.

    Correct Answer
    A. Continuity.
    Explanation
    Continuity testing is used to determine if there is a complete path for current flow in a wire or component. It checks for any breaks or gaps in the circuit, indicating a high resistance or an open circuit. By using a continuity test, one can verify if the wire or component has the desired amount of resistance (ohms) or if there is any interruption in the flow of current. Therefore, continuity is the appropriate electrical check to determine the amount of resistance in a particular wire or component on an H-60.

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  • 31. 

    (435) If you find it is difficult to pull the input module free from the main module when removing the input module from an H–60 power train, you can help break the input module loose using

    • Bolts.

    • A screwdriver.

    • A large wooden mallet.

    • The hydraulic separator unit.

    Correct Answer
    A. Bolts.
    Explanation
    When removing the input module from an H-60 power train, if it is difficult to pull it free from the main module, using bolts can help break the input module loose. This suggests that applying force with bolts can help loosen the input module and make it easier to remove.

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  • 32. 

    (402) Following installation, the H–60 vibration absorber that requires a tuning weight adjustment using the 8500 Balancer/Analyzer and functional check flight is the

    • Stabilator.

    • Cabin.

    • Roll.

    • Tail.

    Correct Answer
    A. Cabin.
    Explanation
    The correct answer is cabin. After the installation of the H-60 vibration absorber, a tuning weight adjustment is required using the 8500 Balancer/Analyzer and a functional check flight. The stabilator, roll, and tail are not mentioned in relation to this process. Therefore, the cabin is the correct answer.

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  • 33. 

    (403) What allows for thermal expansion when the brakes on an H–60 are OFF?

    • Master cylinder.

    • Slave mixer valve.

    • Parking brake valve.

    • Wheel brake assembly.

    Correct Answer
    A. Master cylinder.
    Explanation
    The master cylinder allows for thermal expansion when the brakes on an H-60 are OFF. The master cylinder is responsible for generating hydraulic pressure that is used to activate the wheel brakes. When the brakes are not in use, the master cylinder compensates for thermal expansion by allowing the hydraulic fluid to expand and contract without causing any damage to the braking system.

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  • 34. 

    (404) Before servicing an H–60 landing gear strut with nitrogen, you must ensure there

    • Are no nitrogen leaks.

    • Are no hydraulic fluid leaks.

    • Is adequate nitrogen pressure.

    • Is proper hydraulic fluid pressure.

    Correct Answer
    A. Are no hydraulic fluid leaks.
    Explanation
    Before servicing an H-60 landing gear strut with nitrogen, it is important to ensure that there are no hydraulic fluid leaks. This is because if there are leaks in the hydraulic fluid system, it can lead to a loss of hydraulic pressure and potentially affect the performance and safety of the landing gear. Therefore, checking for hydraulic fluid leaks is crucial before proceeding with servicing the landing gear strut with nitrogen.

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  • 35. 

    (409) The capacity of the cargo hook on the H–60 is

    • 4,000 pounds.

    • 6,000 pounds.

    • 8,000 pounds.

    • 10,000 pounds.

    Correct Answer
    A. 8,000 pounds.
    Explanation
    The correct answer is 8,000 pounds. This indicates that the capacity of the cargo hook on the H-60 helicopter is 8,000 pounds.

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  • 36. 

    (413) The windshield anti-ice system heating elements on the H–60 will heat the windshield surface to a temperature of

    • 70 – 115ï‚°F.

    • 90 – 150ï‚°F.

    • 70 – 115ï‚°C.

    • 70 – 150ï‚°C.

    Correct Answer
    A. 70 – 115F.
    Explanation
    The correct answer is 70 - 115°F. This is the temperature range at which the windshield anti-ice system heating elements on the H-60 will heat the windshield surface. It is important to maintain this temperature range to prevent ice buildup on the windshield, which could obstruct the pilot's view and compromise flight safety.

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  • 37. 

    (417) If, on an H–60 fuel system, you want to remove 28 volts direct current (VDC) power, deenergize the fuel warning conditioner relays, and cause the No. 1 and No. 2 FUEL LOW capsules to illuminate, you would press the FUEL

    • TEST reset button on the central display unit (CDU).

    • IND TEST push-button on the miscellaneous switch panel.

    • SYS TEST push-button on the miscellaneous switch panel.

    • PROBE TEST push-button on the miscellaneous switch panel.

    Correct Answer
    A. IND TEST push-button on the miscellaneous switch panel.
    Explanation
    Pressing the IND TEST push-button on the miscellaneous switch panel would deenergize the fuel warning conditioner relays and cause the No. 1 and No. 2 FUEL LOW capsules to illuminate. This action would not remove 28 volts direct current (VDC) power, but it would initiate the fuel system test and activate the fuel warning indicators.

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  • 38. 

    (421) Before performing an H–60 electrical continuity check, you must remove all power from the circuit you are checking. Failure to do this could result in damage to the

    • #1 bus.

    • #2 bus.

    • Circuit.

    • Multimeter.

    Correct Answer
    A. Multimeter.
    Explanation
    Before performing an H-60 electrical continuity check, it is necessary to remove all power from the circuit being checked. Failure to do so could result in damage to the multimeter.

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  • 39. 

    (425) Vibration is best defined as the periodic back and forth movement of a component caused by

    • Unbalance or external forces.

    • Unbalance or internal forces.

    • Vibration or external forces.

    • Balance or internal forces.

    Correct Answer
    A. Unbalance or external forces.
    Explanation
    Vibration is defined as the periodic back and forth movement of a component. This movement can be caused by either unbalance or external forces acting on the component. Unbalance refers to an uneven distribution of mass within the component, causing it to vibrate. External forces, on the other hand, can include any external factors such as mechanical shocks or vibrations that are transmitted to the component. Therefore, the correct answer is unbalance or external forces.

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  • 40. 

    (427) You are troubleshooting the directional control pedals on an H–60 and the problem still persists. Your next course of action will be to

    • Perform a main rotor rig.

    • Conduct a four point rig.

    • Perform a tail rotor rig check.

    • Conduct a quick rig of the tail rotor system.

    Correct Answer
    A. Perform a tail rotor rig check.
    Explanation
    Performing a tail rotor rig check would be the next course of action because the problem with the directional control pedals on the H-60 still persists. A tail rotor rig check involves ensuring that the tail rotor system is properly aligned and adjusted. This check can help identify any issues with the tail rotor system that may be causing the problem with the directional control pedals. By performing this check, any misalignments or adjustments can be corrected, potentially resolving the issue with the pedals.

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  • 41. 

    (405) Before you apply external electrical power to perform an operational check of an H–60’s brake system, you must first check the clearance around the

    • Tail rotor (TR) blades.

    • Main rotor blades.

    • Brake liners.

    • Stabilator.

    Correct Answer
    A. Stabilator.
    Explanation
    Before applying external electrical power to perform an operational check of an H-60's brake system, it is necessary to first check the clearance around the stabilator. The stabilator is the horizontal stabilizer located at the tail of the aircraft. Ensuring proper clearance around the stabilator is important to prevent any damage to the aircraft or injury to personnel during the operational check of the brake system.

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  • 42. 

    (415) The amount of useable fuel the H–60 internal auxiliary fuel tank will hold if it is single point refueled is

    • 120 gallons.

    • 130 gallons.

    • 150 gallons.

    • 170 gallons.

    Correct Answer
    A. 170 gallons.
    Explanation
    The correct answer is 170 gallons. This is because the question states that the H-60 internal auxiliary fuel tank is single point refueled, which means that it can hold a larger amount of fuel compared to other refueling methods. Therefore, the tank will hold 170 gallons of useable fuel.

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  • 43. 

    (421) The pin filter adapters in the H–60 alternating current (AC) electrical system are designed to filter

    • Electromagnetic vibrations.

    • Electromagnetic pulses.

    • Electrical impulses.

    • Magnetic pulses.

    Correct Answer
    A. Electromagnetic pulses.
    Explanation
    The pin filter adapters in the H-60 AC electrical system are specifically designed to filter out electromagnetic pulses. Electromagnetic pulses are sudden bursts of electromagnetic energy that can disrupt or damage electrical equipment. By using pin filter adapters, the system can effectively block or reduce the impact of these pulses, ensuring the smooth and safe operation of the electrical system.

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  • 44. 

    (424) When the H–60 main rotor (MR) is rotating, centrifugal force will throw the droop stops out and permit increased vertical movement of the blades when the rotation percentage MR speed (Nr) is

    • 85 to 90 percent.

    • 70 to 75 percent.

    • 55 to 60 percent.

    • 40 to 45 percent.

    Correct Answer
    A. 70 to 75 percent.
    Explanation
    When the H-60 main rotor is rotating at 70 to 75 percent of its speed (Nr), centrifugal force will throw the droop stops out. This action allows for increased vertical movement of the blades.

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  • 45. 

    (401) What section of the H–60 is designed to give a smooth airflow induction for cooling major aircraft systems and subsystem components?

    • Stabilator.

    • Tail rotor pylon.

    • Main rotor pylon.

    • Transition section.

    Correct Answer
    A. Main rotor pylon.
    Explanation
    The main rotor pylon is designed to give a smooth airflow induction for cooling major aircraft systems and subsystem components. This section of the H-60 is responsible for directing the airflow in a way that efficiently cools the critical components of the aircraft. The stabilator, tail rotor pylon, and transition section do not have the same function of providing airflow induction for cooling purposes.

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  • 46. 

    (402) The H–60 stabilator vibration absorber is attached to the

    • Left stabilator keeper pin.

    • Right stabilator keeper pin.

    • Left stabilator attachment fitting.

    • Right stabilator attachment fitting.

    Correct Answer
    A. Right stabilator attachment fitting.
    Explanation
    The H-60 stabilator vibration absorber is attached to the right stabilator attachment fitting. This means that it is connected to the right side of the stabilator, which is the horizontal stabilizer on the tail of the aircraft. The attachment fitting is the point where the absorber is connected to the stabilator, allowing it to absorb and reduce vibrations during flight.

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  • 47. 

    (421) What power source backs up the No. 1 and No. 2 generators on the H–60?

    • Auxiliary power unit (APU) generator.

    • Backup power unit.

    • Backup generator.

    • Battery.

    Correct Answer
    A. Auxiliary power unit (APU) generator.
    Explanation
    The correct answer is the Auxiliary power unit (APU) generator. The APU generator serves as a backup power source for the No. 1 and No. 2 generators on the H-60. The APU is a small gas turbine engine that provides electrical power to the aircraft when the main engines are not running. It is designed to start the main engines, provide electrical power during ground operations, and act as a backup power source in case of generator failure.

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  • 48. 

    (424) The H–60 pilot is alerted to a de-ice system malfunction by a

    • De-ice caution light.

    • De-ice fail caution light.

    • De-ice caution light and horn.

    • FAIL flag on the ice-rate meter.

    Correct Answer
    A. FAIL flag on the ice-rate meter.
    Explanation
    The correct answer is "FAIL flag on the ice-rate meter." This means that when there is a de-ice system malfunction, the pilot will be alerted by a FAIL flag on the ice-rate meter. This flag indicates that the de-ice system has failed and requires attention. It is a visual indicator that provides a clear and immediate indication of the malfunction, allowing the pilot to take appropriate action. The other options, such as the de-ice caution light, de-ice fail caution light, and de-ice caution light and horn, are not specifically mentioned as indicators of a de-ice system malfunction in the given information.

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  • 49. 

    (406) When the No. 1 hydraulic system on an H–60 fails, the pressure switch that will send a signal to the logic module is located in the

    • Forward primary servo.

    • Transfer module pump.

    • Second-stage servo.

    • Transfer module.

    Correct Answer
    A. Transfer module.
    Explanation
    When the No. 1 hydraulic system on an H-60 fails, the pressure switch that will send a signal to the logic module is located in the transfer module.

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Quiz Review Timeline (Updated): Mar 20, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 11, 2014
    Quiz Created by
    Bradcarrierice24

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