2f051 Edit Code 6 Volume 4

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Quizzes Created: 4 | Total Attempts: 1,471
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2f051 Edit Code 6 Volume 4 - Quiz

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Questions and Answers
  • 1. 

    (601) What is the gallon capacity of the Kovatch-Volvo R-11 storage tank?

    • A.

      4500

    • B.

      5000

    • C.

      5500

    • D.

      6000

    Correct Answer
    D. 6000
    Explanation
    The gallon capacity of the Kovatch-Volvo R-11 storage tank is 6000.

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  • 2. 

    (601) The power takeoff (PTO) interlock system on the Kovatch-Volvo R-11 Refueler prevents the

    • A.

      Unfiltered fuel from being dispensed to an aircraft.

    • B.

      Fuel from passing through the pump when the engine is idling.

    • C.

      Auxiliary throttle from operating when the PTO is in the vehicle drive position.

    • D.

      Auxiliary throttle from operating when the PTO is in the vehicle pump position.

    Correct Answer
    C. Auxiliary throttle from operating when the PTO is in the vehicle drive position.
    Explanation
    The correct answer is the auxiliary throttle from operating when the PTO is in the vehicle drive position. The power takeoff (PTO) interlock system on the Kovatch-Volvo R-11 Refueler is designed to prevent the auxiliary throttle from functioning when the PTO is engaged in the vehicle drive position. This ensures that the vehicle cannot be driven while the auxiliary throttle is active, providing an additional safety measure to prevent accidents or damage to the vehicle.

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  • 3. 

    (601) When replacing tires on the Kovatch-Volvo R-11, torque the lug nuts between

    • A.

      400 to 500 foot-pounds (ft-lbs.).

    • B.

      300 to 400 ft-lbs.

    • C.

      200 to 300 ft-lbs.

    • D.

      100 to 200 ft-lbs.

    Correct Answer
    A. 400 to 500 foot-pounds (ft-lbs.).
  • 4. 

    (601) The low air pressure warning light and alarm on the Kovatch-Volvo R-11 Refueler will activate when the air pressure drops below how many pounds per square inch (psi)?

    • A.

      60

    • B.

      65

    • C.

      70

    • D.

      80

    Correct Answer
    A. 60
    Explanation
    The low air pressure warning light and alarm on the Kovatch-Volvo R-11 Refueler will activate when the air pressure drops below 60 pounds per square inch (psi).

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  • 5. 

    (601) The brake system on the Kovatch-Volvo R-11 Refueler will automatically (engage), apply parking brakes when the

    • A.

      Air pressure drops below 30 to 40 pounds per square inch (psi).

    • B.

      Transmission selector is in the neutral position.

    • C.

      Unit is in the AIR TRANSPORT mode.

    • D.

      Interaxle differential lock is activated.

    Correct Answer
    A. Air pressure drops below 30 to 40 pounds per square inch (psi).
    Explanation
    The correct answer is that the brake system on the Kovatch-Volvo R-11 Refueler will automatically engage and apply parking brakes when the air pressure drops below 30 to 40 pounds per square inch (psi). This means that if the air pressure in the brake system falls below the specified range, the parking brakes will automatically activate to prevent the vehicle from moving. This safety feature ensures that the vehicle remains stationary and secure in the event of a loss of air pressure in the brake system.

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  • 6. 

    (601) What does an illuminated green indicator light on the Kovatch-Volvo R-11’s pump control panel indicate?

    • A.

      A fault in the automatic and continuous self-testing circuity.

    • B.

      A power take off system is activated inside the cab.

    • C.

      A wet sensor, tank is filled to maximum capacity.

    • D.

      A dry sensor, tank is not filled to capacity.

    Correct Answer
    D. A dry sensor, tank is not filled to capacity.
    Explanation
    The illuminated green indicator light on the Kovatch-Volvo R-11's pump control panel indicates that the tank is not filled to capacity. This means that the sensor in the tank is detecting that the tank is not completely full.

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  • 7. 

    (602) Which is not a position on the Kovatch-International R-11 Refueler’s pumping mode selector valve?

    • A.

      DEFUELl.

    • B.

      LOW-FLOW.

    • C.

      HIGH-FLOW.

    • D.

      SINGLE-POINT.

    Correct Answer
    D. SINGLE-POINT.
    Explanation
    The position "SINGLE-POINT" is not a position on the Kovatch-International R-11 Refueler's pumping mode selector valve. This valve is used to select different pumping modes for the refueler, such as DEFUEL, LOW-FLOW, and HIGH-FLOW. However, the SINGLE-POINT position is not included as one of the options for pumping modes on this valve.

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  • 8. 

    (602) What is the maximum number of United States (US) gallons that can register on the resettable meter of the Kovatch-International R-11 Refueler?

    • A.

      9,999.

    • B.

      99,999

    • C.

      999,999

    • D.

      9,999,999

    Correct Answer
    A. 9,999.
    Explanation
    The maximum number of United States (US) gallons that can register on the resettable meter of the Kovatch-International R-11 Refueler is 9,999.

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  • 9. 

    (602) What engine is the Kovatch-International R-11 equipped with?

    • A.

      International 6-cylinder, liquid-cooled diesel engine.

    • B.

      International 6-cylinder, liquid-cooled mogas engine.

    • C.

      International 8-cylinder, liquid-cooled diesel engine.

    • D.

      International 8-cylinder, liquid-cooled mogas engine.

    Correct Answer
    A. International 6-cylinder, liquid-cooled diesel engine.
    Explanation
    The Kovatch-International R-11 is equipped with an International 6-cylinder, liquid-cooled diesel engine.

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  • 10. 

    (602) Which gauge component measures the fuel pressure at the outlet of the fuel pump?

    • A.

      Differential pressure.

    • B.

      Nozzle pressure.

    • C.

      System outlet.

    • D.

      Pump pressure.

    Correct Answer
    D. Pump pressure.
    Explanation
    The correct answer is Pump pressure. This gauge component measures the fuel pressure at the outlet of the fuel pump. It is important to monitor the pump pressure to ensure that the fuel is being delivered at the correct pressure to the engine.

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  • 11. 

    (602) The Kovatch-International and Volvo R-11 refuelers both carry the same noncollapsible

    • A.

      60-foot long 2 ½-inch and 1 ½-inch hoses.

    • B.

      75-foot long 2 ½-inch and 1 ½-inch hoses.

    • C.

      60-foot long 3-inch and 1-inch hoses.

    • D.

      75-foot long 3-inch and 1-inch hoses.

    Correct Answer
    A. 60-foot long 2 ½-inch and 1 ½-inch hoses.
    Explanation
    The correct answer is 60-foot long 2 ½-inch and 1 ½-inch hoses. This is because the question states that both the Kovatch-International and Volvo R-11 refuelers carry the same noncollapsible hoses, and specifies their length and diameter. The other options do not match the given information.

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  • 12. 

    (603) Use the ether starting aid for the Kovatch-Volvo R-11 Refueler when the temperature is below

    • A.

      25 degrees Celsius (°C).

    • B.

      32°C.

    • C.

      40 degrees Fahrenheit (°F).

    • D.

      45°F.

    Correct Answer
    C. 40 degrees Fahrenheit (°F).
    Explanation
    The correct answer is 40 degrees Fahrenheit (°F). The ether starting aid should be used for the Kovatch-Volvo R-11 Refueler when the temperature is below 40°F. This implies that the starting aid is necessary to assist in starting the engine in colder temperatures, and it is specifically recommended for temperatures below 40°F.

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  • 13. 

    (603) To use engine braking in the Kovatch-Series R-11s, what gear selector position can you use?

    • A.

      Reverse.

    • B.

      Neutral.

    • C.

      Drive.

    • D.

      Three.

    Correct Answer
    D. Three.
    Explanation
    In order to use engine braking in the Kovatch-Series R-11s, the gear selector position that can be used is "Three". This suggests that the vehicle has an automatic transmission with multiple gear options, and by selecting the third gear, the engine braking effect can be utilized to slow down the vehicle.

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  • 14. 

    (604) What is the desired engine speed, in revolutions per minute (rpm), for LOW FLOW servicing operations on the Kovatch-International R-11 Refueler?

    • A.

      600±50.

    • B.

      800±50.

    • C.

      L,000±50.

    • D.

      L,800±50.

    Correct Answer
    C. L,000±50.
    Explanation
    The desired engine speed for LOW FLOW servicing operations on the Kovatch-International R-11 Refueler is 1,000±50 rpm.

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  • 15. 

    (604) Which cable assembly on the Intellicheck2® and Intellitrol® Overfill Prevention Control Systems connects to the refueler for filling operations?

    • A.

      Sculcon.

    • B.

      Duocept® socket assembly.

    • C.

      Overfill Sensor (optic probes).

    • D.

      Multifunction loading rack controller.

    Correct Answer
    A. Sculcon.
    Explanation
    The Sculcon cable assembly on the Intellicheck2® and Intellitrol® Overfill Prevention Control Systems connects to the refueler for filling operations.

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  • 16. 

    (604) At what gallons per minute (gpm) maximum rate can you fill the tank on the Kovatch-series R-11 Refueler using the bottom loading system?

    • A.

      300

    • B.

      450

    • C.

      600

    • D.

      750

    Correct Answer
    C. 600
    Explanation
    The maximum rate at which you can fill the tank on the Kovatch-series R-11 Refueler using the bottom loading system is 600 gallons per minute (gpm).

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  • 17. 

    (605) What is the maximum allowable pounds per square inch (psi) of fueling nozzle pressure used with the Beta-Freightliner R-12 Hydrant-Servicing Unit?

    • A.

      15

    • B.

      45

    • C.

      55

    • D.

      90

    Correct Answer
    C. 55
    Explanation
    The maximum allowable pounds per square inch (psi) of fueling nozzle pressure used with the Beta-Freightliner R-12 Hydrant-Servicing Unit is 55.

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  • 18. 

    (605) What component in the Beta-Freightliner cab illuminates and indicates the vehicle cannot be moved whenever the lift platform is not fully set in the DOWN position?

    • A.

      Safety interlock override switch.

    • B.

      Interlock override indicator light.

    • C.

      Interlock engaged indicator light.

    • D.

      Power takeoff (PTO) control switch.

    Correct Answer
    C. Interlock engaged indicator light.
    Explanation
    The interlock engaged indicator light is the component in the Beta-Freightliner cab that illuminates and indicates the vehicle cannot be moved whenever the lift platform is not fully set in the DOWN position. This light serves as a safety feature to prevent the vehicle from being operated while the lift platform is not securely in place.

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  • 19. 

    (605) The fueling operation indicator light on the Beta-Freightliner R-12 Hydrant-Servicing Unit flashes when the deadman timeout is within how many seconds of pausing the fueling operation?

    • A.

      30

    • B.

      60

    • C.

      90

    • D.

      120

    Correct Answer
    A. 30
    Explanation
    The fueling operation indicator light on the Beta-Freightliner R-12 Hydrant-Servicing Unit flashes when the deadman timeout is within 30 seconds of pausing the fueling operation.

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  • 20. 

    (605) The sump tank full indicator on the Beta-Freightliner R-12 Hydrant-Servicing Unit will illuminate when the sump tank is approximately at what percent?

    • A.

      65

    • B.

      70

    • C.

      75

    • D.

      80

    Correct Answer
    C. 75
    Explanation
    The sump tank full indicator on the Beta-Freightliner R-12 Hydrant-Servicing Unit will illuminate when the sump tank is approximately 75% full.

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  • 21. 

    (605) The primary air pressure gauge on the Beta-Freightliner R-12 Hydrant-Servicing Unit indicates the

    • A.

      Pressure of the fuel at the pump outlet.

    • B.

      Air pressure supplied to the Type III hydrant outlet.

    • C.

      Fuel pressure entering the unit through the hydrant coupler.

    • D.

      Combined precharge pressure within the surge suppressors.

    Correct Answer
    B. Air pressure supplied to the Type III hydrant outlet.
    Explanation
    The primary air pressure gauge on the Beta-Freightliner R-12 Hydrant-Servicing Unit indicates the air pressure supplied to the Type III hydrant outlet. This means that the gauge shows the amount of air pressure that is being supplied to the hydrant outlet, which is important information for ensuring proper fuel delivery and pressure regulation.

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  • 22. 

    (605) Which is not a status indicator light-emitting diode (LED) on the Beta-Freightliner R-12 Hydrant-Servicing Unit defuel engine control governor?

    • A.

      OKAY TO PUMP.

    • B.

      PUMP ENGAGED.

    • C.

      SUMP TANK FULL.

    • D.

      THROTTLE READY.

    Correct Answer
    C. SUMP TANK FULL.
    Explanation
    The correct answer is "SUMP TANK FULL." This is because the other options, "OKAY TO PUMP," "PUMP ENGAGED," and "THROTTLE READY," are all status indicator LEDs that provide information about the functioning of the engine control governor. However, "SUMP TANK FULL" is not a status indicator LED but rather a statement indicating that the sump tank is full.

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  • 23. 

    (605) The surge suppressor gauge on the Beta-Freightliner R-12 Hydrant-Servicing Unit should be precharged to

    • A.

      45 pounds per square inch (psi).

    • B.

      55 ± 5 psi.

    • C.

      65 ± 5 psi.

    • D.

      90 psi.

    Correct Answer
    D. 90 psi.
  • 24. 

    (605) How many fuel-servicing hoses are the Beta-International Hydrant-Servicing vehicles equipped with?

    • A.

      Four.

    • B.

      Three.

    • C.

      Two.

    • D.

      One.

    Correct Answer
    A. Four.
    Explanation
    The correct answer is four because the question specifically asks about the number of fuel-servicing hoses equipped in the Beta-International Hydrant-Servicing vehicles. Since the answer states that there are four hoses, it aligns with the information provided in the question.

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  • 25. 

    (606) During fueling operations with the Beta-Freightliner R-12 Hydrant-Servicing Unit, the deadman switch must be re-activated, to prevent automatic shutdown, every

    • A.

      30 seconds.

    • B.

      1 minute.

    • C.

      1 ½ minutes.

    • D.

      2 minutes.

    Correct Answer
    D. 2 minutes.
    Explanation
    During fueling operations with the Beta-Freightliner R-12 Hydrant-Servicing Unit, the deadman switch must be re-activated every 2 minutes to prevent automatic shutdown.

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  • 26. 

    (606) When backing an R-12 servicing vehicle towards an aircraft, you must always have a

    • A.

      Spotter behind the unit.

    • B.

      Prepositioned chock behind the unit.

    • C.

      Spotter and a prepositioned chock behind the unit.

    • D.

      Spotter in front of the unit, and a spotter and a prepositioned chock behind the unit.

    Correct Answer
    C. Spotter and a prepositioned chock behind the unit.
    Explanation
    When backing an R-12 servicing vehicle towards an aircraft, it is necessary to have both a spotter and a prepositioned chock behind the unit. This is important for safety reasons, as the spotter can provide guidance and ensure that the vehicle does not collide with any obstacles or the aircraft itself. The prepositioned chock is used to prevent the vehicle from rolling or moving unintentionally while it is being backed up. Having both the spotter and the chock behind the unit ensures that there are multiple safety measures in place to prevent accidents or damage.

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  • 27. 

    (606) Who raises the lift platform on a Beta-Freightliner R-12 when servicing fuel to an aircraft?

    • A.

      Crew chief.

    • B.

      Fuels operator.

    • C.

      Line expeditor.

    • D.

      Concurrent servicing supervisor.

    Correct Answer
    A. Crew chief.
    Explanation
    The crew chief is responsible for raising the lift platform on a Beta-Freightliner R-12 when servicing fuel to an aircraft. They are in charge of overseeing and coordinating all maintenance and servicing tasks, including fueling operations. The crew chief has the authority and knowledge to operate the lift platform safely and efficiently during the fueling process.

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  • 28. 

    (606) When defueling with a Beta-Freightliner R-12, what button do you press to adjust the pressure to the desired level, to maintain a steady flow?

    • A.

      Up

    • B.

      Inc

    • C.

      Low

    • D.

      Down

    Correct Answer
    B. Inc
    Explanation
    To adjust the pressure to the desired level and maintain a steady flow while defueling with a Beta-Freightliner R-12, the correct button to press is "inc." This button is likely short for "increase" and would allow the user to incrementally increase the pressure to reach the desired level.

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  • 29. 

    (607) Pantographs are low maintenance refueling units capable of flow rates up to

    • A.

      450

    • B.

      600

    • C.

      750

    • D.

      1200

    Correct Answer
    B. 600
    Explanation
    Pantographs are low maintenance refueling units that can handle high flow rates. The given options are flow rates, and the correct answer is 600. This means that pantographs are capable of refueling at a rate of 600 units, which is relatively high.

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  • 30. 

    (607) What component on a pantograph aids in maneuvering the single-point nozzle near the skin of the aircraft?

    • A.

      Locking bars and pins.

    • B.

      Galvanized-steel support.

    • C.

      Weighted counterbalances.

    • D.

      Spring-tension counterbalances.

    Correct Answer
    D. Spring-tension counterbalances.
    Explanation
    The spring-tension counterbalances on a pantograph help in maneuvering the single-point nozzle near the skin of the aircraft. These counterbalances provide the necessary tension and balance to ensure smooth movement and control of the nozzle. They help in maintaining the desired position and preventing any sudden or unwanted movements during the maneuvering process.

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  • 31. 

    (607) During warm weather months, how do you manually relieve the pressure on the pantographs piping?

    • A.

      Drain fuel from the sampling valve.

    • B.

      Drain fuel from the filter separator.

    • C.

      Drain fuel from the expansion tank.

    • D.

      Drain fuel from the pressure gauge.

    Correct Answer
    A. Drain fuel from the sampling valve.
    Explanation
    During warm weather months, the pressure on the pantographs piping can be manually relieved by draining fuel from the sampling valve. This action helps to release any excess pressure in the system, ensuring that it operates efficiently and safely. By draining fuel from the sampling valve, any built-up pressure can be released, preventing potential damage or malfunctioning of the pantographs piping.

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  • 32. 

    (607) What form is used to perform pantograph inspections?

    • A.

      AF Form 4427.

    • B.

      AF Form 1807.

    • C.

      AF Form 1800.

    • D.

      AFTO Form 244.

    Correct Answer
    A. AF Form 4427.
    Explanation
    AF Form 4427 is the correct answer because it is the form that is specifically used for performing pantograph inspections. The other forms mentioned, AF Form 1807, AF Form 1800, and AFTO Form 244, are not specifically designed for pantograph inspections and therefore would not be the correct form to use for this purpose.

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  • 33. 

    (607) When inspecting a pantograph, which item is not required to be attached to the pantograph with a cable to eliminate foreign object damage (FOD)?

    • A.

      Dust cap.

    • B.

      Latch pin.

    • C.

      Cotter pin.

    • D.

      Locking bar.

    Correct Answer
    D. Locking bar.
    Explanation
    The locking bar is not required to be attached to the pantograph with a cable to eliminate foreign object damage (FOD). The locking bar is used to secure the pantograph in the raised position during maintenance or when it is not in use. It does not pose a risk of becoming a foreign object and causing damage if it is not attached with a cable. On the other hand, the dust cap, latch pin, and cotter pin are all items that need to be attached with a cable to prevent them from becoming loose or detached and potentially causing FOD.

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  • 34. 

    (608) What is the gallon capacity of the C-300/C-301 Ground-Servicing Unit’s storage tank?

    • A.

      1000

    • B.

      1200

    • C.

      1500

    • D.

      2000

    Correct Answer
    B. 1200
    Explanation
    The gallon capacity of the C-300/C-301 Ground-Servicing Unit's storage tank is 1200.

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  • 35. 

    (608) What C-300/C-301 Ground-Servicing Unit’s component allows the tank to breathe during loading and unloading operations?

    • A.

      Vent valve.

    • B.

      Float level sensor.

    • C.

      Bottom loading interlock.

    • D.

      Emergency/bottom loading valve.

    Correct Answer
    A. Vent valve.
    Explanation
    The vent valve is the component of the C-300/C-301 Ground-Servicing Unit that allows the tank to breathe during loading and unloading operations. This valve ensures that air can escape from the tank as it is being filled, preventing any pressure build-up or potential damage to the tank. It also allows air to enter the tank as fuel is being pumped out, maintaining a balanced pressure inside the tank. Overall, the vent valve plays a crucial role in ensuring the safe and efficient operation of the ground-servicing unit.

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  • 36. 

    (608) What component on the C-300/C-301 Ground-Servicing Unit works in conjunction with the float level sensor to prevent the tank from overfilling?

    • A.

      Vent valve.

    • B.

      Bottom loading interlock.

    • C.

      Emergency valve operator.

    • D.

      Emergency/bottom loading valve.

    Correct Answer
    D. Emergency/bottom loading valve.
    Explanation
    The emergency/bottom loading valve works in conjunction with the float level sensor to prevent the tank from overfilling. This valve is designed to stop the flow of fuel into the tank when it reaches a certain level, ensuring that the tank does not become overfilled.

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  • 37. 

    (608) What component on the C-300/C-301 Ground-Servicing Unit prevents the vehicle from moving during filling operations?

    • A.

      Float level sensor.

    • B.

      Bottom loading interlock.

    • C.

      Emergency valve operator.

    • D.

      Emergency/bottom loading valve.

    Correct Answer
    B. Bottom loading interlock.
    Explanation
    The bottom loading interlock is the component on the C-300/C-301 Ground-Servicing Unit that prevents the vehicle from moving during filling operations. This interlock ensures that the vehicle remains stationary while the filling process is taking place, preventing any accidents or spills that could occur if the vehicle were to move. It provides a safety measure to ensure that the filling operation is carried out smoothly and without any risks.

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  • 38. 

    (608) What is the rated gallons per minute (gpm) output of the positive displacement pump on the C-300/C-301 Ground-Servicing Unit?

    • A.

      50

    • B.

      100

    • C.

      150

    • D.

      200

    Correct Answer
    B. 100
    Explanation
    The rated gallons per minute (gpm) output of the positive displacement pump on the C-300/C-301 Ground-Servicing Unit is 100.

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  • 39. 

    (608) The C-300/C-301 Ground-Servicing Unit is normally equipped with how many feet of 1½-inch diameter hose?

    • A.

      50

    • B.

      75

    • C.

      100

    • D.

      125

    Correct Answer
    C. 100
    Explanation
    The C-300/C-301 Ground-Servicing Unit is normally equipped with 100 feet of 1½-inch diameter hose.

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  • 40. 

    (609) You are performing servicing operations with the C-300/C-301 Ground-Servicing Unit. What position do you shift the transmission lever in after pulling out the power takeoff (PTO) handle?

    • A.

      Neutral (N).

    • B.

      Drive (D).

    • C.

      Third (3).

    • D.

      Second (2).

    Correct Answer
    A. Neutral (N).
    Explanation
    After pulling out the power takeoff (PTO) handle during servicing operations with the C-300/C-301 Ground-Servicing Unit, you should shift the transmission lever to the Neutral (N) position.

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  • 41. 

    (609) When receiving ground fuel with the C-300/C-301 Ground-Servicing Unit, the tank fill rate should not exceed

    • A.

      100 gallons per minute (gpm).

    • B.

      200 gpm.

    • C.

      300 gpm.

    • D.

      600 gpm.

    Correct Answer
    D. 600 gpm.
    Explanation
    The correct answer is 600 gpm. This means that when receiving ground fuel with the C-300/C-301 Ground-Servicing Unit, the tank fill rate should not exceed 600 gallons per minute.

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  • 42. 

    (609) When receiving ground fuel with the C-300/C-301 Ground-Servicing Unit, the manhole cover must be left open if the fill rate exceeds how many gallons per minute (gpm)?

    • A.

      100

    • B.

      250

    • C.

      450

    • D.

      600

    Correct Answer
    A. 100
    Explanation
    When receiving ground fuel with the C-300/C-301 Ground-Servicing Unit, the manhole cover must be left open if the fill rate exceeds 100 gallons per minute (gpm).

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  • 43. 

    (610) Hot refueling cannot be performed until what validation procedures have been completed on the aircraft, fueling systems, and the facility?

    • A.

      System Safety Engineering Analysis.

    • B.

      Air Force Civil Engineer Support Agency Inspection.

    • C.

      Headquarters Air Force Materiel Command, Senior Executive Service Inspection.

    • D.

      Headquarters United States Air Force, Directorate of Logistics, Materiel Support Division Analysis.

    Correct Answer
    A. System Safety Engineering Analysis.
  • 44. 

    (610) During aircraft hot refueling, the hot refueling supervisor

    • A.

      Observes the fuel equipment pressure gauges.

    • B.

      Maintains visual contact with the prepositioned fireguard.

    • C.

      Maintains intercom contact with the fuels equipment operator.

    • D.

      Ensures the aircrew maintains their hands out of the cockpit instrumentation area.

    Correct Answer
    D. Ensures the aircrew maintains their hands out of the cockpit instrumentation area.
    Explanation
    The hot refueling supervisor ensures that the aircrew keeps their hands out of the cockpit instrumentation area during aircraft hot refueling. This is important to prevent any accidental activation of controls or instruments that could cause a safety issue. By maintaining this requirement, the supervisor helps to ensure the safe refueling of the aircraft.

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  • 45. 

    (610) You are hot refueling an aircraft equipped with refuel high-level shutoff valves. When should the valves be checked for proper operation?

    • A.

      When the aircraft jettisoned fuel on the previous mission.

    • B.

      Before the hot refueling operation begins.

    • C.

      At the beginning of each hot refueling operation.

    • D.

      At the midpoint of the hot refueling operation.

    Correct Answer
    C. At the beginning of each hot refueling operation.
    Explanation
    The high-level shutoff valves on an aircraft should be checked for proper operation at the beginning of each hot refueling operation. This is important to ensure that the valves are functioning correctly and will shut off the fuel flow when the desired fuel level is reached. Checking the valves at the beginning of each operation helps to prevent any potential fuel spillage or overfilling during refueling, ensuring the safety and efficiency of the refueling process.

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  • 46. 

    (610) Which action should you initiate first if a fire or fuel leak occurs during a hot refueling operation?

    • A.

      Stop fuel flow.

    • B.

      Stop the aircraft engines.

    • C.

      Notify the fire department.

    • D.

      Disconnect the fuel nozzle.

    Correct Answer
    A. Stop fuel flow.
    Explanation
    In the event of a fire or fuel leak during a hot refueling operation, the first action that should be initiated is to stop the fuel flow. This is crucial in order to prevent further fuel from feeding the fire or leak, which could exacerbate the situation and cause more damage. Stopping the fuel flow helps to minimize the risk of a larger fire and allows for subsequent actions, such as stopping the aircraft engines and notifying the fire department, to be taken safely. Disconnecting the fuel nozzle can be done after the fuel flow has been stopped to further mitigate the risk of fuel feeding the fire.

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  • 47. 

    (611) What type of special servicing operation involves transferring fuel out of the fuel tanks of an aircraft with one or more engines operating?

    • A.

      Hot defueling.

    • B.

      Rapid defueling.

    • C.

      In-shelter refueling.

    • D.

      Concurrent servicing.

    Correct Answer
    A. Hot defueling.
    Explanation
    Hot defueling is the correct answer because it involves transferring fuel out of the fuel tanks of an aircraft while one or more engines are still operating. This operation is performed when there is a need to remove fuel quickly and efficiently, such as during an emergency situation or when the aircraft needs to be serviced or repaired. It requires special precautions to ensure safety and prevent any accidents or fuel spills.

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  • 48. 

    (611) Hot defueling is approved for all of the following aircraft except

    • A.

      C-5 Galaxy.

    • B.

      C-27 Spartan.

    • C.

      C-130 Hercules.

    • D.

      C-17 Globemaster III

    Correct Answer
    A. C-5 Galaxy.
    Explanation
    Hot defueling is a process where fuel is removed from an aircraft while the engines are still running. It is a potentially dangerous operation that requires strict safety protocols. The C-5 Galaxy is not approved for hot defueling, meaning that fuel cannot be removed from this aircraft while the engines are running. On the other hand, the C-27 Spartan, C-130 Hercules, and C-17 Globemaster III are all approved for hot defueling.

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  • 49. 

    (612) During a concurrent servicing operation (CSO) supporting combat sortie generation (CSG) all of the following maintenance items may be done except

    • A.

      Oil servicing.

    • B.

      Liquid oxygen servicing.

    • C.

      Liquid nitrogen servicing.

    • D.

      Hydraulic fluid servicing.

    Correct Answer
    B. Liquid oxygen servicing.
    Explanation
    During a concurrent servicing operation (CSO) supporting combat sortie generation (CSG), various maintenance tasks are performed simultaneously to ensure the smooth operation of aircraft. These tasks typically include oil servicing, liquid nitrogen servicing, and hydraulic fluid servicing. However, liquid oxygen servicing is not typically performed during a CSO for combat sortie generation. Liquid oxygen is primarily used for breathing purposes and is not directly related to the maintenance of aircraft systems.

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  • 50. 

    (612) The lettering on a concurrent servicing supervisors (CSS) reflective vest will be at least

    • A.

      Six inches in height, five inches wide.

    • B.

      Six inches in height, four inches wide.

    • C.

      Four inches in height, two inches wide.

    • D.

      Four inches in height, three inches wide.

    Correct Answer
    B. Six inches in height, four inches wide.
    Explanation
    The correct answer is "six inches in height, four inches wide." This is because the question is asking for the dimensions of the lettering on a concurrent servicing supervisors (CSS) reflective vest. The lettering needs to be large enough to be easily readable, which is why it should be six inches in height. The width of the lettering should be four inches to ensure that it is wide enough to be clearly visible.

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