2f051 Holloman Afb Edit Code 6

not-available-via-ai

When the air pressure in the brake system drops below 30 to 40 pounds per square inch (psi), the parking brakes on the Kovatch-Volvo R-11 Refueler will automatically engage. This is a safety measure to ensure that the vehicle does not roll or move when the air pressure is insufficient to operate the brakes effectively. It helps prevent accidents and keeps the vehicle secure when it is not in use or parked.

A pressure indicating transmitter is a Type III system component that signals the microprocessor to turn on the lead pump when the system pressure drops below 60 psi. This transmitter measures the pressure in the system and sends a signal to the microprocessor when it falls below the set threshold, indicating the need to activate the lead pump to increase the pressure.

The process of connecting two or more metallic objects together using a conductor is called bonding. Bonding is done to ensure that there is an equal potential between the metallic objects, preventing the buildup of static electricity or potential differences that could lead to electrical hazards. It helps to create a safe and efficient electrical system by providing a continuous path for electrical currents to flow and preventing the occurrence of electrical shocks or damage to equipment.

In a Type III hydrant system, the lead pump is the first pump that is activated during an emergency. The sequence of the other pumps is determined by the order in which they are activated after the lead pump. Since pump #2 is selected as the lead pump, the sequence of the other pumps would be 3, 4, 5, and 1. This means that pump #3 would be activated after pump #2, followed by pump #4, pump #5, and finally pump #1.

Turbine engine oil falls under the category of synthetic oils. This is because turbine engine oil is specifically formulated to meet the unique requirements of turbine engines, which often operate at high temperatures and under extreme conditions. Synthetic oils are designed to provide superior performance and protection compared to conventional oils, making them ideal for use in turbine engines.

Cryotainer safety relief valves are tested with compressed air. This is because compressed air is commonly used in testing and calibrating safety relief valves. It allows for the simulation of pressure conditions that the valve may experience in real-world scenarios. Testing with compressed air ensures that the valve functions properly and can safely release excess pressure when needed.

A fuel spill less than two feet in any plane direction is classified as a Class I spill. This means that it is a small spill that can be easily contained and cleaned up. Class I spills are considered to have a low risk of spreading or causing significant damage.

When cargo/passenger aircraft are being serviced concurrently, passengers are allowed to enter or exit the aircraft as long as a jetway is used. This means that passengers can access the aircraft through a covered walkway that connects the airport terminal to the aircraft, ensuring their safety and convenience during the boarding and disembarking process.

The maximum amount of gallons of fuel permitted in a fuel laboratory is 10. This implies that any amount of fuel exceeding 10 gallons is not allowed in the laboratory.

A dual dispensing, single product unit has two meters to measure the amount of product dispensed, but only one pump to actually pump the product. This means that the unit can dispense the same product from two separate outlets or nozzles simultaneously, allowing for faster and more efficient dispensing.

Fuel at the automotive fuel storage and dispensing system is normally received through tank trucks. Tank trucks are commonly used to transport fuel from refineries or fuel terminals to the storage and dispensing system. They are equipped with large tanks that can hold a substantial amount of fuel and are designed to safely transport and deliver the fuel to its destination. Tank trucks are a convenient and efficient method of receiving fuel, especially for smaller automotive fuel systems that may not require the use of larger transportation methods such as tank cars or barges.

The delivery schedule is not required on the Department of Defense (DD) Form 250, Material Inspection and Receiving Report. This form is used to document the receipt of materials or fuel at a military service station. It includes information such as seal numbers, fuel grade, and quantity, but the delivery schedule is not necessary for this report.

The appropriate quality assurance representative (QAR) must be notified for product disposition if excessive contamination is detected in motor gasoline (MOGAS) and diesel fuel receipts. This is because the QAR is responsible for ensuring the quality and compliance of the products received. They have the knowledge and authority to make decisions regarding the disposition of contaminated fuel and take appropriate actions to prevent further issues. The company who shipped the product, base fuels laboratory personnel, and area laboratory personnel may also need to be notified, but the QAR is the primary person who should be informed in this situation.

The maximum time interval permitted by the vehicle identification link (VIL) to make a pump selection is 999 seconds. This means that the VIL system allows users up to 999 seconds to choose a pump.

After obtaining a sample with an in-line sampler, it is recommended to wait for 60 seconds before disassembling the sampler. This waiting period allows enough time for the sampler to collect a representative sample and ensures that any remaining particles or contaminants are properly captured. Disassembling the sampler too soon may result in an inaccurate or incomplete sample.

The maximum amount of time that can elapse between obtaining a conductivity sample and taking the conductivity reading is 24 hours. This means that the sample can be collected and stored for up to 24 hours before the reading is taken.

Inert solids such as rust, metal fragments, dust, and fibers are referred to as particulate matter. These substances are typically suspended in the air or water and can have negative effects on human health and the environment. They can cause respiratory problems when inhaled and can also contribute to the pollution of water bodies. Therefore, particulate matter is the appropriate term to describe these types of inert solids.

The AFTO Form 22 is used to report technical manual (TM) deficiencies and recommend changes. This form is specifically designed for the purpose of suggesting modifications to TMs and initiating a reply process. Therefore, it is the most appropriate form to use for reporting technical order (TO) deficiencies. The other options, such as AF Form 457, USAF Hazard Report, AFTO Form 422, Differential Pressure Log, and AF Form 847, Recommendation for Change of Publication, are not specifically intended for reporting TO deficiencies.

The two gauges that are permanently installed on cryotainers are pressure and quantity. Pressure gauge is used to measure the pressure inside the cryotainer, while the quantity gauge is used to measure the amount of cryogenic liquid present in the cryotainer. These gauges are essential for monitoring and ensuring the proper functioning and safety of the cryotainer.

The correct answer is "Only vehicles needed to support daily mission requirements." This means that not all vehicles need to go through the checkpoint for daily inspections, only the ones that are necessary for the daily mission. This implies that vehicles that are not needed for the mission do not need to be processed through the checkpoint.

If a frayed bonding cable is found during the operator maintenance check, the appropriate action would be to repair the bonding cable. This means fixing the frayed section of the cable to ensure its proper functioning. This option is the most practical and cost-effective solution as it addresses the issue without the need to replace the entire cable or remove the equipment from service. Additionally, reporting the finding to refueling maintenance may be necessary for documentation purposes, but it is not the immediate action to be taken in this situation.

When experiencing muscle cramps in the abdominal wall or limbs, it is likely a case of heat cramps. Heat cramps are caused by dehydration and an imbalance of electrolytes in the body, particularly sodium and potassium. These cramps can be painful and are often accompanied by heavy sweating. Heat exhaustion and heatstroke are more severe heat-related injuries that can occur when the body is unable to regulate its temperature properly. Sunstroke is not a recognized medical term and is likely referring to heatstroke.

The freeze point for Jet-A jet fuel is -40 degrees Fahrenheit. This means that at temperatures below -40 degrees Fahrenheit, the jet fuel will solidify and become unusable.

Liquid oxygen (LOX) vaporizes into a gaseous state at a temperature of –297 °F. This is because oxygen has a boiling point of –297 °F, which means that at this temperature, the liquid oxygen will start to boil and convert into a gas.

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

When backing an R-12 servicing vehicle towards an aircraft, it is necessary to have a spotter behind the unit to ensure that there are no obstacles or hazards in the way. Additionally, a prepositioned chock should be placed behind the unit to prevent it from rolling backwards and causing damage to the aircraft. Therefore, the correct answer is to have both a spotter and a prepositioned chock behind the unit.

Class II fuel spills involve an area not more than 10 feet in any plane direction. This classification is used for spills that are relatively small and can be contained and cleaned up easily. Class II spills pose a lower risk compared to larger spills and are typically easier to manage and mitigate.

Unit type codes have five alphanumeric characters designating a manpower, equipment, or both manpower and equipment force that is tasked with completing a specific mission.

The bacon bomb sampler is the correct answer because it is the only sampling device listed that has a projecting stem on a valve rod that opens automatically when the sampler strikes the bottom of a tank. This feature allows for easy and efficient sampling of liquids in tanks without the need for manual opening of the valve. The other options listed do not have this specific feature.

The in-line sampler is used for sampling pressurized systems under flow conditions. This device is designed to extract a representative sample from a continuous flow of pressurized fluid without interrupting the flow. It allows for accurate and reliable sampling while maintaining the integrity of the system. The other options mentioned, such as the drum thief, bacon bomb sampler, and weighted bottle sampler, are not specifically designed for sampling pressurized systems under flow conditions.

The Type IV hydrant system was developed by the United States Air Forces in Europe (USAFE). This suggests that the system was specifically designed and implemented by the USAFE for use in their operations and facilities in Europe. The other options, Pacific Air Forces (PACAF), Air Combat Command (ACC), and Air Mobility Command (AMC), are not the correct answers as they do not pertain to the development of the Type IV hydrant system.

The model 1152 conductivity meter is approved for use in hazardous locations when equipped with the proper batteries. This means that it is designed to be safe to use in environments where there may be flammable gases, vapors, or dust present.

The Type IV hydrant system uses 4 tanks, and each tank can hold 50,000 gallons.

The minimum fire rating for all interior walls separating the laboratory from other portions of the building is 60 minutes. This means that these walls are designed to withstand fire for at least 60 minutes, providing a barrier and preventing the spread of fire to other areas of the building. A higher fire rating ensures greater protection and allows more time for evacuation and firefighting efforts.

The correct answer is a. TO 00–5–1, AF Technical Order System. This is because the question is asking for the technical order that explains the procedures for reporting improvements in TOs, and TO 00–5–1 specifically addresses the AF Technical Order System. The other options, TO 00–5–15, TO 00–5–18, and TO 00–5–3, do not specifically relate to reporting improvements in TOs.

The responsible technical content manager is required to take action on a technical order (TO) emergency improvement recommendation report within 48 hours. This means that they have two days to review the report and implement any necessary changes or improvements to address the emergency situation. It is important for the manager to act quickly in order to ensure the safety and efficiency of the technical operations.

The standard gallon capacity for an above ground fuel storage tank used at a military service station is 12,000 gallons.

Ground fuel-servicing operations would not require a fuels flight-line expediter. This is because ground fuel-servicing involves refueling stationary aircraft on the ground, which does not require the coordination and expediter role that is necessary for other operations such as aircraft defueling, multiple-source refueling, and concurrent servicing of cargo/passenger aircraft.

Heat can be transferred in cryotainers through conduction, convection, and radiation. Conduction is the transfer of heat through direct contact between objects or substances. Convection is the transfer of heat through the movement of fluids or gases. Radiation is the transfer of heat through electromagnetic waves. In cryotainers, heat can be conducted through the walls of the container, convected through the movement of the cryogenic fluid, and radiated through the walls of the container. Therefore, all three methods of heat transfer are involved in transferring heat in cryotainers.

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 a specific gear labeled as "Three" which allows for engine braking.

When liquid oxygen (LOX) is converted into gaseous oxygen, it expands in volume. The expansion ratio is determined by the temperature and pressure conditions. In this case, it is stated that the conversion is happening at atmospheric pressure. At atmospheric pressure, one cubic foot of liquid oxygen will expand to 860 cubic feet of gaseous oxygen.

The hot refueling supervisor is responsible for positioning the aircraft on the "hot pad" during Type IV hydrant system operations. This role involves overseeing the entire hot refueling process, including ensuring the safe and efficient positioning of the aircraft for refueling. The hot refueling supervisor is responsible for coordinating with the hot refueling crewman and other personnel involved in the operation to ensure that all safety protocols are followed and that the aircraft is positioned correctly for refueling.

not-available-via-ai

To adjust the pressure to the desired level and maintain a steady flow while defueling with a Beta-Freightliner R-12, the button that needs to be pressed is "INC." This suggests that pressing the "INC" button increases the pressure to the desired level for a steady flow.

During a liquid oxygen (LOX) receipt, the procedure that is only accomplished is testing for odor. This is because liquid oxygen has no color or taste, but it does have a distinct odor. Testing for odor is important to ensure that there are no leaks or contamination in the LOX, as any foreign substances can be hazardous and affect its quality and safety. Monitoring for leaks, checking the Department of Defense (DD) Form 250, and ensuring sufficient ullage in the receiving tank are important procedures in general, but they are not specific to a LOX receipt.

Based on safety regulations and guidelines, a 55-gallon waste drum should be positioned at least 50 feet away from the fuels laboratory building. This distance is necessary to minimize the risk of fire or explosion in case of any accidents or leaks from the drum. It allows for a safe buffer zone to protect the building and its occupants from potential hazards.

Liquid oxygen (LOX) storage tanks should be purged every 365 days because oxygen has the potential to react with other substances and cause fires or explosions. Purging removes any contaminants or impurities that may have accumulated in the tank over time, ensuring the safety and stability of the stored oxygen. Regular purging helps maintain the quality and purity of the oxygen, reducing the risk of accidents or hazards associated with its storage.

Fuel servicing operations should not be conducted within 300 feet of operating aircraft radar because the radar emits electromagnetic waves that can interfere with the fueling process and potentially cause a fire or explosion. It is important to maintain a safe distance to ensure the safety of both the aircraft and the personnel involved in fuel servicing operations.

The minimum number of minutes that must pass to eliminate static charges before disassembling an in-line sampler is 1. This suggests that it only takes 1 minute for the static charges to dissipate and become safe to disassemble the sampler.

Product loss caused by a hostile activity in a deployed location is categorized as a combat loss. Combat loss refers to the loss of products or resources that occurs during a military conflict or combat situation. In this scenario, the hostile activity in the deployed location indicates a situation of conflict, making combat loss the most appropriate category for this determinable variance.

The purpose of the Type III hydrant system lockout key is to transfer control from one microprocessor to the other. This key allows for the seamless transition of control between the two microprocessors, ensuring uninterrupted operation and preventing any system failures or disruptions. It is an essential tool in maintaining the proper functioning and reliability of the Type III hydrant system.

Isopropyl alcohol is the correct answer because it is a commonly used cleaning agent for conductivity probes. It is effective in removing any residue or contaminants that may affect the accuracy of the probe's readings. Isopropyl alcohol is also safe to use on most materials and does not leave behind any residue itself. Petroleum ether, turbine fuel, and acetone are not suitable for cleaning conductivity probes as they may damage the probe or leave behind harmful residues.

If the DD Form 250 or contractor delivery ticket is not available upon arrival of a fuel tank truck and prior to fuel receipt, the correct person to contact would be the Defense Logistics Agency (DLA) quality assurance representative (QAR). The QAR is responsible for ensuring that the quality and quantity of the fuel received meets the required standards. They would be able to provide guidance on how to proceed in the absence of the necessary documentation.

During receipt operations, danger signs should be placed 50 feet to the front and rear of a tank truck when offloading in an unsecure area.

The correct answer is AF Form 980, Caution Tag. This form is used as a temporary means of warning personnel against potential hazards or as a caution against unsafe practices. It is specifically designed for this purpose and is the appropriate form to use in these situations.

When a caution tag has been removed from a vehicle or equipment, the Fuels service center should be notified. This is because the Fuels service center is responsible for managing and maintaining the fuel-related operations and equipment. They need to be informed about any changes or updates regarding the equipment to ensure proper maintenance and safety protocols are followed. The Fuels management team, Fuels information service center superintendent, and Fuels environmental safety office may have related responsibilities, but they are not specifically mentioned in relation to the removal of a caution tag.

Combustible liquids have a flash point, which is the lowest temperature at which they can release enough vapor to ignite when exposed to an ignition source. The flash point is an important safety measure to determine the potential fire hazard of a liquid. The question asks for the minimum temperature at which combustible liquids have a flash point. Among the given options, the lowest temperature is 100 °F, which means that combustible liquids can have a flash point at this temperature or above.

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

The correct answer is 60-foot long 2 ½-inch and 1 ½-inch hoses. This is the correct answer because it states that both the Kovatch-International and Volvo R-11 refuelers carry the same noncollapsible hoses that are 60 feet long and have diameters of 2 ½ inches and 1 ½ inches.

When the engine generator has a fault, it will cause the vibrating horn to sound on the Type III hydrant system. This suggests that the vibrating horn is connected to the engine generator and is triggered when a fault occurs. The other options, such as refueling pumps running simultaneously, a closed manual valve on the product recovery tank, or an inoperative flow control valve on the hydrant servicing vehicle, do not directly relate to the functioning of the engine generator and therefore would not cause the vibrating horn to sound.

The pressure control valve is designed to open and relieve excess pressure in the hydrant system caused by thermal expansion. This valve helps to prevent damage to the system and maintain a safe operating pressure. The other options, such as the bypass, defuel/flush, and hydrant control valves, do not specifically address relieving thermal expansion pressure.

The maximum rate at which the tank on the Kovatch-series R-11 Refueler can be filled using the bottom loading system is 600 gallons per minute (gpm). This means that the refueler is capable of filling the tank at a rate of 600 gallons per minute, which is the highest rate among the given options of 300, 450, 600, and 750 gpm.

After filling a tank, it is necessary to wait for a certain amount of time before inserting any object to determine the level of the fuel. The correct answer of 30 minutes suggests that it takes approximately 30 minutes for the fuel to settle and for an accurate reading to be obtained. Waiting for this period of time ensures that the fuel has properly distributed and any disturbances caused by filling the tank have settled, allowing for an accurate measurement to be taken.

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 the maintenance and servicing of the aircraft, including fueling operations. The crew chief ensures that all necessary equipment, such as the lift platform, is properly operated and maintained during the fueling process.

The correct place to take the reading for the American Petroleum Institute (API) gravity test is at the point at which the principal surface of the liquid cuts the hydrometer scale. This is because the API gravity test measures the density or specific gravity of petroleum liquids, and the hydrometer is used to determine this. The point where the liquid cuts the hydrometer scale indicates the specific gravity of the liquid, which is used to calculate the API gravity.

The AFTO Form 245 is a continuation of the AFTO Form 244. This means that the information recorded on the AFTO Form 244 can be continued and expanded upon on the AFTO Form 245. It is likely that the AFTO Form 245 is used to provide additional details or updates to the information initially recorded on the AFTO Form 244.

not-available-via-ai

Plastic should not be used when obtaining conductivity samples because it is an insulator and does not allow the flow of electrical current. Conductivity measurements require a container that allows the transfer of electrical charge, and plastic does not possess this property. Glass and metal, on the other hand, are both conductive materials and can be used to obtain conductivity samples.

The contamination monitor is the component on the Type IV hydrant system that shuts down the fueling pumps when water and sediment are detected in the fuel. This device is specifically designed to detect and monitor the presence of contaminants in the fuel, such as water and sediment, and it automatically triggers a shutdown of the fueling pumps to prevent further contamination of the fuel.

The correct answer is a. A dry break coupler located inside the hose will close automatically. This means that if the hose separates from the nozzle during a hot refueling operation, the dry break coupler will automatically close, preventing fuel from spilling.

All assigned fuel-servicing vehicles and equipment must be inspected at least once every 7 days when not used. This ensures that the vehicles and equipment are in proper working condition and any potential issues or maintenance needs are identified and addressed promptly. Regular inspections help to prevent breakdowns, ensure safety, and maintain the efficiency and effectiveness of the fuel-servicing vehicles and equipment.

The power takeoff (PTO) interlock system on the Kovatch-Volvo R-11 Refueler prevents the auxiliary throttle from operating when the PTO is in the vehicle drive position. This means that when the vehicle is in motion, the auxiliary throttle cannot be engaged, ensuring that the vehicle operates safely and efficiently while driving.

The fuels manager, fuels flight commander, and/or terminal superintendent should review the Air Force Technical Order (AFTO) Form 39 and sign page 2 in the Management Form Review sections on a monthly basis. This ensures that they stay updated on any changes or updates in the technical order and can address any issues or concerns in a timely manner. Reviewing the form on a monthly basis allows for regular monitoring and maintenance of the fuel management system.

To ensure an accurate temperature reading when manually gauging a tank for temperature, the thermometer must be left in the fuel for at least 5 minutes. This is because it takes time for the thermometer to adjust to the temperature of the fuel and provide an accurate reading. Leaving it in for less than 5 minutes may result in an inaccurate reading as the thermometer may not have fully adjusted to the temperature of the fuel.

The Fuels management team must inform the squadron commander, Air Force Petroleum Office, and other affected agencies of any deficiency in a fixed hydrant system that compromises mission accomplishment. They are responsible for managing and overseeing all aspects of the fuel operations, including the fixed hydrant system. As such, they have the knowledge and authority to report any issues or deficiencies in the system to ensure that mission objectives are not compromised.

The Scully Intellitrol control system sends electrical pulses to the high-level sensor 30 times per second during a filling operation.

Fuel in above ground tanks must settle for a minimum of 8 hours before transferring. This settling time allows any impurities or sediments in the fuel to settle at the bottom of the tank, preventing them from being transferred along with the fuel. By waiting for 8 hours, the fuel can be transferred with a higher level of purity and quality.

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

The correct answer is c. 36. The diameter of the manway with access ladder used for military service stations above and below ground tanks is 36 inches.

When the old AFTO Form 422 is full and a new form is initiated, the information that is carried over to the new form is the last four readings. This means that the technician fills in the four most recent readings from the old form onto the new form. The purpose of this is to ensure continuity and accuracy in tracking the differential pressure measurements. The initials of the technician initiating the new form are not mentioned as part of the information carried over.

The correct answer is d. Emergency power down system. This system is designed to cut all electric current running to all dispensers when activated. It is specifically designed for emergency situations where it is necessary to quickly and safely shut off power to the dispensers. This system helps prevent any potential hazards or accidents that may occur due to the continued flow of electric current.

Test membrane filters are dried at 194 °F. This temperature is necessary to ensure that the filters are completely dry and free from any moisture before they are used for the bottle method. Drying the filters at a lower temperature may not effectively remove all the moisture, which can impact the accuracy and reliability of the test results.

The printed standards for the Aeronautical Engine Laboratory (AEL) test should be replaced annually. This is because the standards used in the laboratory need to be accurate and up-to-date in order to ensure reliable and consistent test results. Replacing the standards on an annual basis allows for any potential changes or degradation in the quality of the standards to be addressed and ensures that the tests are conducted with the most current and accurate standards available.

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

The most significant factor that affects a fuel sample's conductivity reading is temperature. Conductivity is a measure of how well a substance conducts electricity, and temperature can greatly influence this property. As temperature increases, the movement of charged particles in the fuel sample also increases, leading to higher conductivity. Conversely, as temperature decreases, the movement of charged particles slows down, resulting in lower conductivity. Therefore, temperature plays a crucial role in determining the conductivity reading of a fuel sample.

Cleaning of the probe before conductivity testing is not required when the conductivity meter can be zeroed with the probe attached. This means that if the meter can be calibrated and read accurately without cleaning the probe, then there is no need to clean it. Cleaning is typically necessary to remove any residue or contaminants that could affect the accuracy of the conductivity reading. However, if the meter can still be zeroed and provide accurate readings with the probe attached, it indicates that the probe is clean enough and does not require further cleaning.

The correct answer is b. Special experience identifier. This three-digit code is used to identify personnel who have special training or experience that is necessary to meet contingency and base-level requirements. It helps to ensure that the right individuals are assigned to specific tasks or roles that require their specialized skills or knowledge.

The correct answer is a. 2400 to 2400. This means that the DLA Energy Form 702 is prepared to cover a 24-hour duty day that starts at midnight (2400) and ends at midnight (2400). This ensures that the form covers a full day without any gaps or overlaps.

The boiling point is the temperature at which a liquid changes into a gas, and it is the term used to describe when a liquid actively starts to vaporize. Volatility refers to the tendency of a substance to evaporate, but it does not specifically indicate the temperature at which vaporization begins. Fire point and flash point are both related to the ignition of a substance, but they do not directly describe the temperature at which vaporization occurs. Therefore, the correct answer is d. Boiling point.

not-available-via-ai

The correct answer is 40 degrees Fahrenheit (°F). This is because the starting aid for the Kovatch-Volvo R-11 Refueler should be used when the temperature is below 45°F.

The Beta-International Hydrant-Servicing vehicles are equipped with four fuel-servicing hoses.

After pulling out the power takeoff (PTO) handle, you need to shift the transmission lever to the Neutral (N) position. This is because the Neutral position disengages the transmission from the engine, allowing you to safely perform servicing operations without any power being transmitted to the ground-servicing unit. Shifting to Drive (D), Third (3), or Second (2) positions would engage the transmission and could potentially cause the ground-servicing unit to move unexpectedly, posing a safety risk.