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In a fire detection system with single loop continuous components with no fault ? [ Path visibility ]

Question 38-1 : The fire alarm is triggered the engine fire extinguisher striker is automatically activated there will be no effect on the system the power supply is cut off automatically

exemple 138 The fire alarm is triggered.The fire alarm is triggered.

When a continuous loop wire type fire detection system is tested ?

Question 38-2 : The wiring and the warning are tested the wire is totally heated only the warning function is tested a part of the wire is totally heated

exemple 142 The wiring and the warning are tested.The wiring and the warning are tested.

Regarding fire detection ion detectors are used to detect ?

Question 38-3 : Smoke overtemperature and fire fire overtemperature

exemple 146 Smoke.Smoke.

Smoke detector systems are installed in the ?

Question 38-4 : Upper cargo compartments class e wheel wells engine nacelles fuel tanks

exemple 150 Upper cargo compartments (class e).Upper cargo compartments (class e).

Continuous loop fire detector systems operate on the principle that an increase ?

Question 38-5 : A decrease in resistance an increase in resistance a decrease in the reference current a decrease in pressure

exemple 154 A decrease in resistanceA decrease in resistance

Generally when the fire handle of the engine fire extinguishing system on an ?

Question 38-6 : 1 3 4 and 5 1 3 and 4 1 2 5 and 6 2 3 4 and 5

Pulling the engine fire switch up . closes both the engine fuel shutoff valve and the spar fuel shutoff valve. closes the engine bleed air valve resulting in loss of wing anti ice to the affected wing and closure of bleed air operated pack valve. trips the generator control relay and breaker. closes the hydraulic fluid shutoff valve . disables thrust reverser for the related engine. allows the engine fire switch to be rotated for discharge. arms one discharge squib on each engine fire extinguisher bottle.rotating the engine fire switch electrically 'fires' a squib discharging the extinguishing agent into the related engine rotating the switch the other way discharges the remaining bottle exemple 158 1, 3, 4 and 5.1, 3, 4 and 5.

On a multi engined aircraft a fire detection system includes ?

Question 38-7 : A warning light for each engine and a single alarm bell common to all engines both a warning light and an alarm bell unique to each engine a single warning light and a single alarm bell a single warning light but a separate alarm bell for each engine

exemple 162 A warning light for each engine and a single alarm bell common to all engines.A warning light for each engine and a single alarm bell common to all engines.

On an aircraft provided with resistance and capacitance variation type fire ?

Question 38-8 : At any isolated point of the loops or else generally on all the loops only at an isolated point of the loops only in a uniform way along the loops on at least one loop

exemple 166 At any isolated point of the loops or else generally on all the loops.At any isolated point of the loops or else generally on all the loops.

Smoke detectors fitted on transport aircraft are of the following type ?

Question 38-9 : Optical or ionization chemical electrical magnetic

exemple 170 Optical or ionization.Optical or ionization.

The bimetal strip detectors of an engine fire detection system .1 are arranged ?

Question 38-10 : 2 and 4 1 and 4 2 and 3 1 and 3

For an engine the bimetal strip detectors are arranged in parallel and close during a fire the reason for this its because engine fire detection systems don't need to be operating 100% of time eg when the aircraft is parked for the night .watch this video . >jaqmgkxk2q8.the system is functioning only when the aircraft is 'alive' .when they are arranged in series the system must be energized all the time since it opens during a fire .it means that in case of an electrical failure or in the case that you forget to switch on the alternators after having start the engine when you switch off the batterie the alarm is triggered exemple 174 2 and 4.2 and 4.

When a bimetallic strip is used as a switch in a fire detection loop a fire ?

Question 38-11 : Avoid false alarms in case of vibrations allow temperatures to equalise delay the triggering of the fire extinguishers and increase their efficiency wait for the triggering of the second fire detection loop in order to confirm the fire

exemple 178 Avoid false alarms in case of vibrations.Avoid false alarms in case of vibrations.

An engine fire is indicated by a n ?

Question 38-12 : Warning and an aural alert bell warning only aural alert only


A continuous loop detector system is a ?

Question 38-13 : Overheat detection system smoke detection system carbon dioxide warning system fire fighting system

exemple 186 Overheat detection system.Overheat detection system.

At reference the smoke detection in the aircraft cargo compartments is carried ?

Question 38-14 : The c1 and c2 sensors detect smoke the c1 and c3 sensors detect smoke only one sensor detects smoke the c2 and c4 sensors detect smoke

Notice c3 and c4 will also trigger the alarm . 941

A gaseous fire loop system is tested by ?

Question 38-15 : Heating up the sensor checking the continuity of the system checking the wiring harness for faults but not the sensor checking the sensor with external pressurised gas

exemple 194 Heating up the sensor.Heating up the sensor.

Power plant fire extinguishers are operated by ?

Question 38-16 : An electrically fired cartridge rupturing a seal in the head of the bottle manual remote control opening a discharge valve an electrically heated capsule rupturing a seal in the pipeline at the engine a mechanical link withdrawing a safety pin and allowing a spring operated plunger to rupture the bottle seal

Boeing 737 computer based training cbt . pulling the fire handle arms the associated squib of each fire bottle once the fire handle has been pulled the fire extinguisher bottle can be discharged by rotating the fire handle in either direction this will discharge the associated fire bottle and release the contents of the selected bottle into the selected ducting for example rotating the fire handle to the left discharges the left bottle 28 volts dc from the hot battery bus is required to fire the bottle exemple 198 An electrically fired cartridge rupturing a seal in the head of the bottle.An electrically fired cartridge rupturing a seal in the head of the bottle.

A fire detection system includes ?

Question 38-17 : A warning light for each engine and a single alarm bell common to all engines a single warning light but a separate alarm bell for each engine a single warning light and a single alarm bell both a warning light and an alarm bell unique to each engine

exemple 202 A warning light for each engine and a single alarm bell common to all engines.A warning light for each engine and a single alarm bell common to all engines.

The correct statement about rain protection for cockpit windshields is that ?

Question 38-18 : Rain repellent should never be sprayed onto the windshield unless the rainfall is very heavy wipers are sufficient under heavy rain conditions the electric de icing system for cockpit windows is also suitable for rain protection the alcohol de icing system for cockpit windows is also suitable for rain protection

exemple 206 Rain repellent should never be sprayed onto the windshield unless the rainfall is very heavy.Rain repellent should never be sprayed onto the windshield unless the rainfall is very heavy.

Fire precautions to be observed before refuelling are ?

Question 38-19 : All bonding and connections to the earth terminal between ground equipment and the aircraft should be made before filler caps are removed ground power units gpu are not to be operated passengers may be boarded traversing the refuelling zone providing suitable fire extinguishers are readily available aircraft must be more than 10 metres from radar or hf radio equipment under test

The fuel caps should not be removed until the aircraft has been correctly earthed/bonded exemple 210 All bonding and connections to the earth terminal between ground equipment and the aircraft should be made before filler caps are removed.All bonding and connections to the earth terminal between ground equipment and the aircraft should be made before filler caps are removed.

Overheat detection systems in a transport aircraft are installed in the ?

Question 38-20 : Wheel wells wheels cabin fuel tanks

You will find smoke detectors in the cargo bays .there are no smoke detectors in the wheel wells the wheel wells doors will not 'seal' the well the smoke is quickly sucked out so smoke detectors would be ineffective exemple 214 Wheel wells.Wheel wells.

In a pressurized transport aircraft the protective breathing equipment ?

Question 38-21 : Protects the members of the crew against fumes and noxious gases protects all the occupants against the effects of accidental depressurization protects the members of the crew against the effects of accidental depressurization gives medical assistance to certain passengers with respiratory disorders

exemple 218 Protects the members of the crew against fumes and noxious gases.Protects the members of the crew against fumes and noxious gases.

When quick donning masks are in use the pilot is ?

Question 38-22 : Able to radiotelephone only able to receive only able to transmit not able to do any radio communication

exemple 222 Able to radiotelephone.Able to radiotelephone.

What is breathed in when using a passenger oxygen mask ?

Question 38-23 : Cabin air and oxygen 100% oxygen cabin air and oxygen or 100% oxygen a mixture of oxygen and freon gas

An oxygen mask consists of a yellow soft silicone facial cup with white elastic bands for securing the mask to the passenger's face. 1059.chemical oxygen generators is the most common system they use sodium chlorate and iron filings and the supply lasts for about 15 minutes the flow can not be modulated and it is a continuous flow .at 32000 ft even if it's a rapid decompression cabin pressure remains a little bit higher than outside pressure and do not forget that the pilots have to immediatly start a descent exemple 226 Cabin air and oxygen.Cabin air and oxygen.

The purpose of the regulator of a flight deck oxygen system is to .1 increase ?

Question 38-24 : 2 3 4 and 5 3 4 5 and 6 1 2 3 and 4 1 3 4 and 6

exemple 230 2, 3, 4 and 5.2, 3, 4 and 5.

A diluter demand oxygen regulator selected to '100%' ?

Question 38-25 : Delivers oxygen flow when inhaling delivers oxygen flow only above fl100 is only recommended for use with smoke in the cockpit mixes air and oxygen in a passenger oxygen mask

exemple 234 Delivers oxygen flow when inhaling.Delivers oxygen flow when inhaling.

In jet transport aircraft breathing oxygen for the cockpit is usually stored in ?

Question 38-26 : Gaseous liquid chemical chemical or gaseous

exemple 238 Gaseous.Gaseous.

In what state is the breathing oxygen for the cockpit of jet transport ?

Question 38-27 : Gaseous a gaseous or chemical compound chemical compound liquid


If the maximum operating pressure of the oxygen system is exceeded the ?

Question 38-28 : Oxygen is discharged overboard via a safety plug oxygen becomes unusable for the passengers passenger oxygen masks will drop down oxygen bottles close automatically

exemple 246 Oxygen is discharged overboard via a safety plug.Oxygen is discharged overboard via a safety plug.

A pressurized aircraft is operated at fl 300 it undergoes a rapid decompression ?

Question 38-29 : The oxygen masks are automatically presented to cabin crew members and passengers the oxygen masks are automatically presented to flight crew members if the automatic mask presentation has been activated the oxygen will flow within the first 3 minutes manual override of the automatic presentation of passenger oxygen masks is generally speaking not possible

exemple 250 The oxygen masks are automatically presented to cabin crew members and passengers.The oxygen masks are automatically presented to cabin crew members and passengers.

A substance which may never be used in the vicinity or on parts of an oxygen ?

Question 38-30 : Grease water halon nitrogen

Oil or grease traces may never be near or on parts of an oxygen installation as there is a risk of explosion when used with oxygen under pressure .heat and pressure are just two means of producing the same effect i e jamming molecules together with enough force to trigger a chemical reaction .so putting oxygen under pressure in contact with a flammable substance is the same as heating it in pure oxygen environment it take surprisingly little pressure to trigger ignition exemple 254 Grease.Grease.

The type of a aircraft oxygen system intended for use by passengers is mostly ?

Question 38-31 : A continuous flow system an air recycle system portable equipment only a pressure demand system

Most commercial aircraft are pressurized at a maximum cabin altitude of 8000 feet where it is possible to breathe normally without an oxygen mask if the cabin pressurization level reaches the equivalent of 14000 feet or higher on the exterior or a decompression occurs above that flying level and hypoxia is possible compartments containing the oxygen masks will open automatically either above or in front of the passenger and crew seats and the oxygen masks will drop down in front of the passenger .an oxygen mask consists of a yellow soft silicone facial cup with white elastic bands for securing the mask to the passenger's face. 1059.chemical oxygen generators is the most common system they use sodium chlorate and iron filings and the supply lasts for about 15 minutes the flow can not be modulated and it is a continuous flow exemple 258 A continuous flow system.A continuous flow system.

The demand valve of a diluter demand type oxygen regulator in normal mode ?

Question 38-32 : User breathes in user requires 100 percent oxygen diluter control is in normal position pressure in the oxygen reservoir is more than 500 psi

exemple 262 User breathes in.User breathes in.

Modern pressurized transport aeroplanes are equipped with ?

Question 38-33 : Two independent oxygen systems one supplying the cockpit the other the cabin only one oxygen system supplying the whole aeroplane two oxygen systems both supplying the cockpit and the cabin only portable oxygen bottles

exemple 266 Two independent oxygen systems, one supplying the cockpit, the other the cabin.Two independent oxygen systems, one supplying the cockpit, the other the cabin.

When selected to normal the oxygen/air ratio of the mixture supplied by the ?

Question 38-34 : Increases when the altitude increases decreases when the altitude increases is constant whatever the altitude is 100%

exemple 270 Increases when the altitude increases.Increases when the altitude increases.

When a cabin oxygen mask is pulled downwards the passenger breathes ?

Question 38-35 : A mixture of oxygen and cabin air pure oxygen under pressure pure oxygen at the ambient pressure cabin air under pressure

exemple 274 A mixture of oxygen and cabin air.A mixture of oxygen and cabin air.

Chemical oxygen generators are used to furnish oxygen to the .1 cockpit.2 ?

Question 38-36 : 2 3 4 1 2 1 3 1 4

Chemical oxygen generators are used to furnish oxygen to the cabin and toilets for the passengers and cabin crew via oxygen mask yellow soft silicone facial cup with white elastic bands for securing the mask to the passenger's face and for smoke hood .chemical oxygen generators advantages are reduced weight and volume easy storage and maintenance no risk of explosion and no maintenance exemple 278 2, 3, 4.2, 3, 4.

The chemical oxygen generator supplies oxygen for about ?

Question 38-37 : 15 minutes 30 minutes 2 hours 5 minutes

Most commercial aircraft are pressurized at a maximum cabin altitude of 8000 feet where it is possible to breathe normally without an oxygen mask if the cabin pressurization level reaches the equivalent of 14000 feet or higher on the exterior or a decompression occurs above that flying level and hypoxia is possible compartments containing the oxygen masks will open automatically either above or in front of the passenger and crew seats and the oxygen masks will drop down in front of the passenger .an oxygen mask consists of a yellow soft silicone facial cup with white elastic bands for securing the mask to the passenger's face. 1059.chemical oxygen generators is the most common system they use sodium chlorate and iron filings and the supply lasts for about 15 minutes the flow can not be modulated and it is a continuous flow exemple 282 15 minutes.15 minutes.

The advantages of a gaseous oxygen source for the passenger cabin are .1 a ?

Question 38-38 : 1 3 and 5 1 2 3 4 and 5 2 4 and 5 2 3 and 4

.in large aircraft chemical oxygen generators furnsih oxygen to the cabin only they use sodium chlorate and iron filings and the supply last for about 15 minutes .storage and maintenance are easy they are no risk of explosion but you can not regulate or stop the flow .in small aircraft oxygen is normally carried in a gaseous state pressurised in cylinders to 1800 psi .autonomy is greater the flow can be modulated and stopped the storage volume depends on the size of the bottle and there is some maintenance explosion risk is not avoided exemple 286 1, 3 and 5.1, 3 and 5.

The equipment of an oxygen supply installation must be kept absolutely free of ?

Question 38-39 : These substances catch fire spontaneously in the presence of oxygen under pressure these substances mixed with oxygen could catch fire in the presence of a spark these substances could plug the oxygen masks filters the oxygen system would be contaminated

exemple 290 These substances catch fire spontaneously in the presence of oxygen under? pressure.These substances catch fire spontaneously in the presence of oxygen under? pressure.

The opening of the doors giving access to the oxygen masks for the passengers ?

Question 38-40 : 1 2 1 3 2 4 2 3

exemple 294 1, 2.1, 2.


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