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164 Cards in this Set
- Front
- Back
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What are two sources of power used to extend and retract landing gear?
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They are electrical and hydraulic
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When should landing gear retraction checks be accomplished?
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During annual and other type inspections, after replacing landing gear components, and after any hard landing
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What is used to inflate an oleo type landing gear shock strut?
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Inflate the strut with a high pressure source of dry air or nitrogen
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Where would you look to find proper tire inflation information?
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When inflating aircraft tires, the amount of pressure is determined by such factors as tire size, outside air temperature, and the gross weight of the aircraft. Specific tire inflation information may be found in the Operation Manual and the Aircraft Maintenance Manual in special tire inflation pressure charts based on gross weight.
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What is the purpose of a hydrauling shimmy damper?
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It is a unit designed to prevent nose wheel vibrations or "shimmy" during taxiing, landing, or takeoff.
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What type of care should be given to landing gear shock struts?
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They should ne inspected regularly for leakage of fluid and for proper extension. The exposed portion of the strut position should be wiped clean daily and inspected for scoring or corrosion
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What is the effect of under inflated tires?
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Under inflated tires are more likely to creep or slip on the wheel when landing or when brakes are applied. Under inflation also causes rapid, uneven wear at or near the edges of the tread.
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What is the purpose of the rudder O-ring mounted on the mating surface of the outer wheel half of a split type wheel?
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To prevent air leakage from the tubeless tire used with this wheel
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What are the three types of brake systems?
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The independent, the power boosted, and the power control type
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What is the purpose of a shuttle valve in a power control system?
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Each brake actuating line in a power brake system incorporates a shuttle valve for the purpose of isolating the emergency brake system from the normal brake system. When emergency brake actuating pressure enters the shuttle valve, the shuttle is systematically moved to the opposite end of the valve. This closes off the normal hydraulic brake system actuating line and allows the emergency fluid to actuate the brakes.
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What component in the landing gear system keeps the landing gear in alingment?
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The landing gear torque links
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What is used to prevent a nose gear from being retracted with the wheel out of the center position?
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Centering devices, such as an internal cam or an external track that straighten the nose wheel it enters the wheel well.
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What is the purpose of the fusible plug in some aircraft wheels?
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It is designed to melt at specific elevated temperature and relive air pressure to prevent the tire from blowing out or braking the wheel
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What is the purpose of the anti-skid system?
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To bring the airplane to a stop without skidding by providing the most effective braking power under all types of a runway conditions
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What are two methods of bleeding brakes?
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The gravity method and the pressure method
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When inspecting brakes, what do you look for?
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1. Check for leaks while the system is pressurized
2. Check flex hoses for swelling, cracking, or soft spots 3. Check brake pedals for spongy actuation (This is an indication of air in the system) 4. Check brake pedals for excessive travel (This indicated worn linings) |
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What do you do before disassembling an oleo strut?
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Discharge the pressure
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What are three types of hydraulic fluid currently being used in civil aircraft?
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They are vegetable base, mineral base, and phosphate ester base fluids
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What is the color of mineral based hydraulic fluids?
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Red
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How do you determine which type of hydraulic fluid to use in a specific system?
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The type of fluid is specified in the aircraft maintenance manual, or on the instruction plate attached to the reservoir on the unit being serviced
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What will happen to the seals in a vegetable base hydraulic system if it serviced with mineral base or phosphate ester base fluids?
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The seals will swell, break down, and block the system
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When hydraulic lines have been disconnected, what precautions should be taken to prevent contamination of the system?
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All hydraulic lines and fittings should be capped or plugged immediately after diconnecting
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What happens to the hydraulic fluid flow if the filter element becomes clogged with foreign matter?
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There is a bypass valve which routes the hydraulic fluid directly from the inlet port to the outlet port
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Why are some hydraulic reservoirs pressurized?
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To ensure a positive flow of fluid to the engine driven pump at high altitudes
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What methods are used to pressurize hydraulic reservoirs?
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Some systems use a variable displacement hydraulic pump, engine bleed air, or hydraulic system pressure acting on a mall piston inside the reservoir. Another method is an aspirator or venture-tee
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Name three types of hydraulic accumulators.
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The diaphragm type, bladder type, and piston type
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What is the purpose of a pressure relief valve in a hydraulic system?
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It is to limit the amount of pressure in the system, It is, in effect, a system safety valve.
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What is the purpose of an unloading valve in a closed hydraulic system?
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The unloading valve is designed to provide a low pressure path for the fluid flow from the pump back to the reservoir when the system has no flow requirments. The unloading valve also acts as pressure regulator.
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What is the function of a wing flap overload valve?
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The purpose of the valve is to prevent possible structural damage to the flaps or the flap system that might result from the flaps being lowered at exsessive speeds
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What protects a direct-pressure type hydraulic pressure gauge from pressure surges?
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A dampening device in the form of a very small restrictor in installed in the line leading to the gauge, or at the inlet to the gauge itself
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What are pneumatic systems used for in aircraft?
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Pneumatic system are sometimes used to operate brakes, open and close doors, starting, pump driving, and operating emergency devices.
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What happens to the air after a pneumatic system is operated?
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The air is dumped overboard
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Why should a pneumatic system be purged periodically?
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to remove contamination, moisture, or oil from the components and lines.
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What is the purpose of the relief valve in a pneumatic system?
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The relief valve protects the system against over-pressurization (thermal expansion) by venting excess pressure to the atmosphere
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What is the purpose of an accumulator?
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Accumulators are used to prevent hydraulic system shock when under high load demand conditions
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What is an example of a phosphate ester base fluid?
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Skydrol
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What is the principle control element in a cabin pressurization system?
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The cabin outflow valve
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What is the purpose of the negative pressure relief valve in the pressurization system?
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The negative pressure relief valve prevents accidentally obtaining a cabin altitude which is higher than the altitude of the aircraft
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What control changes the position of the outflow valve?
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The pressurization controller, located in the cockpit is used to set the cabin air pressure to a desired altitude, normally between six and eight thousand feet
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What are the two groups of independent cabin compressors?
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They are positive displacement, and centrifugal compressors
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What method is used by turbine powered aircraft for pressurization?
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Bleed air from the engine compressor is used for pressurization
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What limits the degree of cabin pressurization?
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The structural design features of the fuselage, and by the capacity of the superchargers to maintain a constant volume of airflow to the fuselage
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What are three methods of supplying heat to the conditioned air when the "heat of compression" is not sufficient for this purpose?
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Fuel burning combustion heaters, electric heaters, and exhaust gas air-to-air heat exchangers
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What is the function of ventilating air in a combustion heater?
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Ventilation air is used to carry the heat to the places where it is needed
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What are the sources for ventilation air?
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For air circulation and heater operation on the ground a blower is used. Inflight, ram-air inlets, or cabin compressors on pressurized aircraft
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What are the components of an air cycle cooling system?
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An expansion turbine (cooling system), an air-to-air heat exchanger, and various valves which control airflow through the system
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What causes a temperature drop in an air cycle cooling system?
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As the compressed air passes through the expansion turbine, it performs the work of turning the turbine and undergoes a pressure and temperature drop
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What are the components in a vapor cycle (Freon) cooling system?
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The compressor, condenser, receiver/dryer, expansion valve, and evaporator
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How do you determine the liquid level in a vapor cycle cooling system?
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Operate the system for about 5 minutes to reach a stabilized condition, and then observe the flow of Freon through the sight glass. A steady flow indicates sufficient charge. If the Freon is low, bubbles will appear in the sight glass
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What are the components of a continuous flow oxygen system?
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Oxygen will flow continuously from a high pressure cylinder, through a high pressure line to the pressure regulation reducing valve. The oxygen will then flow through a calibrated orifice in the outlet, controlling the amount of oxygen delivered to the rebreathing mask
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What must be done if an oxygen system that has been depleted and not reharged within two hours?
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It must be purged with dry nitrogen or dry air and oxygen.
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How are high and low pressure oxygen cylinders identified?
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High pressure (1800-1850 psi) oxygen cylinders are green in color and have the words "Aviator's Breathing Oxygen" stenciled lengthwise in white, one inch letters. Low pressure (400-425 psi) cylinders are painted light yellow.
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What three flight instruments are normally operated from the pitot-static system?
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The airspeed indicator is connected to the pitot and static pressure sources. The altimeter and vertical speed indicator are connected to the static pressure souce only
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What instrument indications will result if the static pressure line becomes disconnected inside the cabin of a pressurized aircraft?
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The altimeter and airspeed indications will both be lower than normal, and the vertical speed indicator will indicate a momentary decent then return to zero
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What is required after replacement of components to the pitot-static system?
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A leak test is required
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What are the sources of power to gyroscopic instrument operation?
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Gyroscopic instruments can be operated either by vacuum, electricity, or air pressure
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What causes an electric driven gyro rotor to tilt when the aircraft is turned?
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Gyroscopic precession
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What is used as a guide for range marking of aircraft instruments?
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The Aircraft Specifications, or Type Certificate Data Sheets and the specific aircraft maintenance manual or flight manual
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Where are instrument range markings placed?
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They are applied to the outer edge of the cover glass or over the calibrations on the dial face of the instrument
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What other type mark is required when range markings are applied to the glass instrument cover?
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An index mark, which is white line extending from the glass cover onto the instrument case to indicate slippage of the glass. Glass slippage would cause the range markings to be in error
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What is a syncro-type remote indicating system?
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These systems can be used to show movement and position of landing gear, wing flaps, oil cooler doors, or other movableparts of the aircraft. A synchro system is an electrical system used for transmitting information from one point to another. The three most common synchro systems are the Autoxyn, the Selsyn, and the Magnesyn
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What type of fuel quantity system is an electric fuel measuring device that accurately determines the density weight of the fuel in the tanks of an aircraft?
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The capacitor fuel type quantity system
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What is meant by "swinging a compass"?
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It is the adjustment of the North-South, and East-West magnets in order to reduce deviation, which is magnetic influences of the aircraft structure and electrical systems
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When inspecting a magnetic compass, the bowl should be filled with liquid and should not contain any bubbles or discolorations. What is the purpose of the liquid in the bowl?
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It is to damped the oscillations of the float
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Which instrument is used to indicate the speed of the crankshaft of reciprocating engine and the speed of the main rotor assembly in a turbine engine?
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A tachometer
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What type of indicating system is used to indicate turbine engine exhaust gas temperature (EGT)?
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A thermocouple system
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What does the manifold pressure gauge indicate when the engine is not operating?
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It indicates atmospheric pressure
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What is used to check a manifold pressure gauge for correct indication when the engine is not operating?
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Either a barometer, or an altimeter after is has been set to zero
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What is the meaning of the yellow range on the airspeed indicator?
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The yellow arc designates the cautionary range
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What does a Mach meter indicate?
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The ratio of aircraft speed to the speed of sound at a particular altitude and temperature during any time in flight
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Why do you not try to remove blockage in a pitot system?
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To prevent further damage to the pitot system
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Name the basic components of a communication system.
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They are the microphone, transmitting antenna, receiving antenna, receiver, and headset or loudspeaker
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What is the most common communication system in use today?
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It is the VHF (very high frequency) system
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Which radio system is used for long range communication?
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The HF (high frequency) system
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What is a transceiver?
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It is a self-contained transmitter and receiver which share the same power supply, antenna and tuning device
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What are the components of a typical VOR (Very High Frequency Omni-range Navigation equipment) system?
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A receiver, visual indicator, dipole antenna, and power supply
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What are the basic components of an autopilot system?
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The gyros, servos, and amplifier
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What are the sensing elements of an autopilot system?
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The directional gyro, and turn-and-bank gyro, attitude gyro, and altitude control are the sensing elements. These units sense aircraft pitch, roll, and yaw to automatically generate signals to keep these movements under control.
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What are the output elements of an autopilot system?
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The output elements of an autopilot system are the servos which actuate the control surfaces
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What is the purpose of a bonding jumper on a radio shock mount?
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To provide a low-impedance ground return, and minimize radio interference from static electricity
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What is the frequency of an emergency locator transmitter (ELT)?
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It is 121.5 MHz
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How can you determine when the batteries of an ELT should be replaced?
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The useful life of the batteries is determined by the battery manufacturer, and the battery replacement date must be marked on the outside of the transmitter. Time is computed from the date of manufacture of the battery
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Describe the proper method of routing coaxial cable from the antenna to the receiver
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When installing coaxial cables, secure them firmly along their entire length at intervals of approximately two feet. To assure optimum operation, coaxial cables should not be routedor tied to other wire bundles and be as short as possible. When bending coaxial cable, be sure that the bend is at least 10 times the size of the cable diameter
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Where is the prefered location for mounting a VOR antenna on the small aircraft
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The VOR antenna is the "V" shaped. The prefered location is on the top of the forward part of the cabin with the apex of the "V" toward the front. An acceptable alternate location is on top of the vertical stabilizer
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Where should DME antennas be located?
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They should be mounted on the lower surface of the aircraft in a position that will not be blanketed by the wings when the aircraft is banked
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What are marker beacons?
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It is part of the ILS system, and is used to indicate the aircraft the aircraft position on the approach to the runway
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What in the indication of the middle marker beacon?
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It is an amber light and an audible tone
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What is an ADF?
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An automatic direction finder
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What is the purpose of a fuel dump system?
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It is an emergency system provided so that the flight crew can quickly bring the weight of the airplace down to the maximum landing weight if an mergency occurs during or shortly after takeoff.
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Other than reducing weight, what other function can be accomplished with a fuel jettisoning system?
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Fuel can be dumped from the heavy wing in order to maintain lateral stability. A fuel dump system is required for all transportairplaces if the maximum takeoff weight is more than 105% of the maximum landing weight. The airplane must be free of fire hazards during dumping, and fuel must dump free and clear of the airplane
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What are a few types od fuel cells?
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Bladder-type fuel cells, integral fuel tanks, and welded or riveted fuel tanks
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How is the weight of a bladder-type cell supported?
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The bladder-type cell depends on the structure of the cavity in which it sits to support the weightof the fuel within it and maintains the shape of a cell. They are made of either rubber or nylong impregnated with neoprene
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What is "wet-wing" construction?
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Wet wing construction is when the fuel cells are built into the wings of the aircraft structure using the skin to contain the fuel. They are known as integral fuel cells.
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What are the advantages of a single point pressure fueling system?
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Pressure fueling, sometimes referred to as single-point or underwing fueling, greatly reduces the time required to service large aircraft. It also eliminates aircraft skin damage from hoses and hose nozzles, and reduces the chance of fuel contamination
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What is the purpose of a fuel temperature indicator on a turbine engine?
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It is a means for checking the temperatureof the fuel in the tanks at the engine to determine when there may be a danger of ice crystals forming in the fuel
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What is the purpose of warning lights in connection with fuel system?
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Warning lights may be used to indicatewhen the fuel pressure is too low, or to indicate when the fuel quanity in a tank is below a certain amount
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Where are electrical operated valve-in-transit indicator lights used?
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On large multiengine aircraft, each of the fuel crossfeed and loine valves may be provided with valve-in-transit indicator lights. The light is on only during the time the valve is in motion and is off when movement is complete.
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What are the four general types of fuel quantity gauges?
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The four types are sight glass (visual), mechanical (linkage), electrical (transmitter, receiver) and electronic (totalizer)
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Which type of fuel quantity gauge is considered to be more accurate than the other types?
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The electronic-capacitance type, because it measures by weight.
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What is a drip gauge?
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An under-wing bayonet type fuel gauge that consists of a calibrated hollow drip tube that is drawn out from the lower wing surface. When the top of the tube reaches the level of the fuel, the tube will begin to drip indicating fuel level.
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What is a crossfeed system?
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An interconnected fuel systemdesigned so that fuel can be fed from any tank to any engine
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What is the purpose of the baffles in a fuel tank?
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To prevent the fuel from surging as a result of changes in attitude of the aircraft
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How can a fuel tank be checked for leaks after a repair?
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By a pressure check using air pressure not over one-half psi with liquid soap or bubble solution to identify the leak.
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What is the purpose of a circuit breaker?
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To protect the circuits and wires from fire. The circuit breaker opens the circuit when an overload exists
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What tool is used to measure the size of unmarked electrical wire?
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A wire gauge can be used to measurewires ranging in size from number zero to number 36
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What are the colors of aircraft position lights and where are they mounted?
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A green light is mounted on the right wingtip, a red light on the left wingtip, and a white light mounted in a position where it is visible from the rear of the aircraft
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What are the factors to be considered when selecting wire size for electrical power?
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One factor is the allowable power loss in the line. A second factor is the permissible voltage drop in the line, and a third factor is the current-carrying ability of the conductor
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When is a circuit breaker or fuse designed to open the circuit?
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A circuit break or fuse should open the circuit before the conductor emits smoke. To accomplish this, the current characteristics of the proteective device must fall below that of the associated conductor
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What are the three most common fualts that occur in an electrical circuit?
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They are open circuits, in which leads or wires are broken; shorted circuits, in which ground leads cause current to be returned by shortcuts to the source power; and low power in circuits causing lights to burn dimly and relays to chatter
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What size electrical conduit should be used for a specific cable bundle?
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To allow for ease of maintenance and possible future circuit expansion, the conduit should have an inside diameter that is 25% larger than the maximum diameter of the conductor bundle.
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When should electrical switches be derated from their normal current rating?
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For high rush-in circuits such as circuits containing incandescent lamps, and inductive circuits that have magnetic energy stored in solenoid coils, or relays, and for DC motor circuits, which draw several times their rated current during starting.
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When do DC electric motors draw several time their rated current?
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During starting
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What would cause an AC electrical motor to run to fast?
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An excessive supply of voltage, or the motor field windings shorted.
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What should cause an AC electrical motor to run too slow?
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Low applied voltage, defective wiring, or no lubrication
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How is the output voltage of an alternator controlled?
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By using a voltage regulator to control the exciter field current and thus regulate the exciter output voltage applied to the alternator field
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What should be checked before any aircraft electrical load is increased?
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The associated wires, conductors, and circuit protection devices should be checked to determine that the new load will not exceed the rated limits of these units.
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What is the main advantage of using AC for aircraft electrical power systems?
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The principle advantage is that the voltage of AC power systems is easily changed by the use of transformers. Therefore, you can transmit power at high voltage and low current, thus reducing the size and weight of the wiring in the circuit
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In AC power systems, how is DC obtained for battery charging?
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The alternating current is changed to direct current by the use of rectifiers
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How long should bonding jumper wires be made?
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Large enough to handle all the the return current and as short as possible to prevent as increase in resistance
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What is the purpose of the anti-skif system?
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Anti-skid systems are designed to permit effective braking throughout the landing roll, regardless of runaway conditions
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What does the anti-skid warning light indicate?
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The anti-skid warning light indicates that the system is turned off of there is a system failure
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What type of warning devices are usually provided for retractable landing gear?
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A red light and aural device
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When does the aural device operate in a landing warning system?
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When the throttles are retarded and the landing gear is in any position other than down and locked
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What type of position indicators are normally used to indicate that the landing gear is down and locked?
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Normally there is a green light for each gear
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Which position of retractable landing gear normally have a position indicator?
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The up and locked position, down and locked position, and in transit
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When should you check landing gear switches, lights, warning horn, or buzzer for proper operation?
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During a landing gear retraction check
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How does a takeoff warning horn differ from a landing gear warning horn?
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The takeoff horn is intermittent, whereas the landinggear warning is continuous
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What items may cause a takeoff warning horn to operate in a typical transport jet aircraft?
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If the throttles are advanced and any of the following conditions exist, the takeoff warning horn will sound.
1.Speed brakes not down 2. Flaps not in a takeoff range 3. Auxiliary power exhaust door open 4 Stabilizer not in the takeoff setting |
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What is the master caution light?
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It is a light that alerts the pilot that there is an abnormal, or change in condition with one of the aircraft systems
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Describe the operating principle of inflateable deicer boots
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Pneumatic deicing systems use rubber inflateable boots attached to the leading edge of the wings and stabilizers. During operation, the tubes are inflated with pressurized air and deflated in an alternating cycle. This inflation and deflation causes the ice to break off and it is carried away by the air stream. Both wings inflate and deflate at the same time.
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What are two methods of inflating pneumatic deicer boots?
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Pressurized air is provided by an engine air pump (vacuum pump), or by bleed air from the turbine engine compressor
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What methods are used to attach deicer boots to the leadings of wing and tail surfaces?
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They are attached by bonding to the surface with cement, fairing strips, screws, or a combination of any methods
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What is the purpose of an air-oil separator in a pneumatic deicing system?
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The purpose of removing the oil from the air of the deicing system is to prevent deterioration of the rubber deicing boots, caused by contact with the oil
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What is used to clean deicer boots?
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A mild soap and water solution
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What must be done before you can make a cold patch repair to deicer boot?
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The deicer boot must be relieved from its instaled tension before applying the patch
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What component of a pneumatic deicer system normally allows suction to be supplied to the boots to hold them down in flight?
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The solenoid distributor valve
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Describe the operating principle for thermal anti-icing systems?
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Thermal anti-icing systems are used primarily for the purpose of preventing ice from forming on the leading edges. However, they are designed to also deicethe leading edges by supplying much hotter than normal air for short periods on a cyclic system. The airfoils that are to beprotected are usually provided with closely spaced double skin. The hot air is passed through the space between skins, and the heat is suffcient to prevent formation of ice or to melt any ice next to the skin. The heated air is supplied continuously as long as the anti-icing system is turned on.
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What methods are used to supply heated air for thermal anti-icing systems?
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Bleed air from the turbine engine compressor, engine exhaust heat exchangers, and ram air heated by a combustion heater.
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How is overheating prevented in a thermal anti-icing system using bleed air?
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A thermal switch will cause a shut-off valve to close and stop the flow of bleed air when the temperature of the leading edge reaches approximately 185 degress F. When the temperature drops, the valve opens and hot bleed air enters the wing once again.
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In a thermal anti-icing system, what happens to the air after it has heated the leading edge of the wing?
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The air is exhausted to the atmosphere at the wingtip or at points where ice formation could be critical
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What problems are associated with electrically heated windshields?
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Delamination, arcing, scratches, and discoloration
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What is windshield delamination?
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Delamination is the seperation of the plies
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What does arcing usually indicate in an electrically heated windshield?
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Arcing usually indicates that there is a breakdown in the conductive coating
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What type of power is used to operate windshield wiper systems?
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Electrical or hydraulic power
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What are common problems encountered with windshield wipers
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One problemis the tendency of the aerodynamic forces to reduce the wiper blade loading pressure on the windshield which causes ineffective wiping or streaking. Another problem is the achieving fast enough wiper oscillation
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How does a pneumatic rain removal system work?
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This method uses high air pressure. The high temperature engine compressor bleed air is blown across the windshields, this air blast forms a barrier that prevents raindrops from stricking the windshield surface.
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In what area of an aircraft would you find carbon monoxide detectors?
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CO detectors are commonly used to check for the presence of carbon monoxide gas in aircraft cabins and cockpits. They are placed where they are easily visible
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What color does a CO detector change to when carbon monoxide fumes are present?
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A reliable CO detector is an indicator tube or packet which contains yellow silica that is impregnated with a silico-molybdate compound. When air containing carbon monoxide is drawn through the tube or packet, the silica gel turns a shade of green. Other typeschange from a tan color to gray or black.
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What are two types of smoke detectors?
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Photoelectric and visual
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Where are smoke detectors used in the aircraft?
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They are commonly used in cargo and baggage compartments, and the lavatory
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How thermal switches are wired in thermal switch fire detection systems?
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The switches are wired in parallel with each other, but in series with the warning lights
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Describe the operating principle of a thermal switch fire detection system.
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The thermal switch system consist of one or more lights, which are energized by aircraft power when conected to the circuit by a thermal switch. The thermal switches are heat sensitive units that complete the circuit at a certain temperature.
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Describe the operating principleof continuous loop fire detection sytem.
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The continuous loop detector consists of one or more wires, imbedded in a special ceramic core inside of a conductive tube. In case of fire or an overheat condition, the cerami core's resistance drops, allowing current to flow between the signal wire and the conductive tube, lighting a warning light.
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How does a thermocouple fire detection system differfrom the thermal switch systems?
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A thermocouple depends upon the rate of temperature rise and will not give a warning when the engine overheats slowly or a short circuit develops
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What two types of fire extinguishing systems?
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The high rate of discharge (HDR) system uses Halon as an agent and is effective on all fire classes. Conventional fire systems use carbon dioxide and are effective on class B and C fires
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What type extinguishing agen is usually found in a HDR system?
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The extinguishing agent is usally one of the halogenated hydrocarbons (Halons) boosted by high pressure dry nitrogen. Halon 1301 is the most commonand sometimes referred to as Freon 13
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What type extinguishing agent is usually associated with a conventional type extinguisher system?
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This system usually contains Carbon Dioxide but may use any other adequate agent
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What is the purpose of the yellow disk in a Carbon Dioxide fire extinguishing system?
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It is the system discharge indicator disk, and it indicates which bank of bottles has been emptied through normal discharge
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In a turbine engine Freon (Halon) fire extinguishing system, how are bottles discharged?
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By an explosive discharge cartridge (Squib) which is detonated electrically, breaking a frangible disk
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How is a Freon fire extinguishing systemprotected from temperature rises in excess of set limits?
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The system is equipped with a thermal fuse that will melt at high temperature conditions and will blow the red discharge indicator disk.
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How can you determine the service life of a fire extinguisher discharge cartridge?
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By the manufacturer's date stamped on the face of the cartridge. The service life of the cartridge is usually recommended in terms of hours below a predetermined temperature
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What type of hand-held extinguishers are available for extinguishing interior aircraft fires?
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The three most common type hand fire extinguishers for a Class A fire is water, carbon dioxide, and dry chemical extinguishing agents.
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What type of fire detection system gives a more complete coverage of a fire hazard?
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A continuous-loop detector system
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Name the different class fires.
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Class A is solid combustible materials
Class B is combustible liquids Class C is electrical Class D is metal, such as magnesium |
