Generally when the fire handle of the engine fire extinguishing system on an ? [ Skills lift off ]

Question 43-1 : 1 3 4 and 5 1 3 and 4 1 2 5 and 6 2 3 4 and 5

exemple 143 1, 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 1, 3, 4 and 5.

On a multi engined aircraft a fire detection system includes ?

Question 43-2 : 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 147 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 43-3 : 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 151 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 43-4 : Optical or ionization chemical electrical magnetic

exemple 155 Optical or ionization. — Optical or ionization.

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

Question 43-5 : 2 and 4 1 and 4 2 and 3 1 and 3

exemple 159 2 and 4. — 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 2 and 4.

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

Question 43-6 : 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 163 Avoid false alarms in case of vibrations. — Avoid false alarms in case of vibrations.

An engine fire is indicated by a n ?

Question 43-7 : Warning and an aural alert bell warning only aural alert only

exemple 167 Warning and an aural alert. — Warning and an aural alert.

A continuous loop detector system is a ?

Question 43-8 : Overheat detection system smoke detection system carbon dioxide warning system fire fighting system

exemple 171 Overheat detection system. — Overheat detection system.

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

Question 43-9 : 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

exemple 175 The c1 and c2 sensors detect smoke. — Notice c3 and c4 will also trigger the alarm . 941 The c1 and c2 sensors detect smoke.

A gaseous fire loop system is tested by ?

Question 43-10 : 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 179 Heating up the sensor. — Heating up the sensor.

Power plant fire extinguishers are operated by ?

Question 43-11 : 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

exemple 183 An electrically fired cartridge rupturing a seal in the head of the bottle. — 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 An electrically fired cartridge rupturing a seal in the head of the bottle.

A fire detection system includes ?

Question 43-12 : 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 187 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 43-13 : 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 191 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 43-14 : 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

exemple 195 All bonding and connections to the earth terminal between ground equipment and the aircraft should be made before filler caps are removed. — The fuel caps should not be removed until the aircraft has been correctly earthed/bonded 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 43-15 : Wheel wells wheels cabin fuel tanks

exemple 199 Wheel wells. — 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 Wheel wells.

In a pressurized transport aircraft the protective breathing equipment ?

Question 43-16 : 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 203 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 43-17 : Able to radiotelephone only able to receive only able to transmit not able to do any radio communication

exemple 207 Able to radiotelephone. — Able to radiotelephone.

What is breathed in when using a passenger oxygen mask ?

Question 43-18 : Cabin air and oxygen 100% oxygen cabin air and oxygen or 100% oxygen a mixture of oxygen and freon gas

exemple 211 Cabin air and oxygen. — 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 Cabin air and oxygen.

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

Question 43-19 : 2 3 4 and 5 3 4 5 and 6 1 2 3 and 4 1 3 4 and 6

exemple 215 2, 3, 4 and 5. — 2, 3, 4 and 5.

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

Question 43-20 : 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 219 Delivers oxygen flow when inhaling. — Delivers oxygen flow when inhaling.

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

Question 43-21 : Gaseous liquid chemical chemical or gaseous

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

Question 43-22 : Gaseous a gaseous or chemical compound chemical compound liquid

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

Question 43-23 : 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 231 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 43-24 : 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 235 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 43-25 : Grease water halon nitrogen

exemple 239 Grease. — 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 Grease.

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

Question 43-26 : 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

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

Question 43-27 : 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 247 User breathes in. — User breathes in.

Modern pressurized transport aeroplanes are equipped with ?

Question 43-28 : 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 251 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 43-29 : Increases when the altitude increases decreases when the altitude increases is constant whatever the altitude is 100%

exemple 255 Increases when the altitude increases. — Increases when the altitude increases.

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

Question 43-30 : A mixture of oxygen and cabin air pure oxygen under pressure pure oxygen at the ambient pressure cabin air under pressure

exemple 259 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 43-31 : 2 3 4 1 2 1 3 1 4

exemple 263 2, 3, 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 2, 3, 4.

The chemical oxygen generator supplies oxygen for about ?

Question 43-32 : 15 minutes 30 minutes 2 hours 5 minutes

exemple 267 15 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 15 minutes.

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

Question 43-33 : 1 3 and 5 1 2 3 4 and 5 2 4 and 5 2 3 and 4

exemple 271 1, 3 and 5. — .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 1, 3 and 5.

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

Question 43-34 : 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 275 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 43-35 : 1 2 1 3 2 4 2 3

A passenger emergency mask is a ?

Question 43-36 : A continuous flow mask and cannot be used if there is smoke in the cabin mask with flow on request and cannot be used if there is smoke in the cabin continuous flow mask and can be used if there is smoke in the cabin mask with flow on request and can be used if there is smoke

exemple 283 A continuous flow mask and cannot be used if there is smoke in the cabin. — 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 .otherwise when the chemical generators is actived the passengers breathes a mixture of oxygen and cabin air .note this question is intended for pilots and flight crews inviting them in the case of smoke in the cabin to prefer a portable equipment instead of a passenger mask A continuous flow mask and cannot be used if there is smoke in the cabin.

When the oxygen system of a large aeroplane is used ?

Question 43-37 : With the setting on 'normal' the cockpit crew is supplied with a mixture of oxygen and cabin air the same source of supply is used by the cockpit crew and passengers the same source of supply is used by the cockpit crew and cabin crew with the setting on 'normal' the passengers are supplied with a mixture of oxygen and cabin air

exemple 287 With the setting on 'normal', the cockpit crew is supplied with a mixture of oxygen and cabin air. — With the setting on 'normal', the cockpit crew is supplied with a mixture of oxygen and cabin air.

An oxygen regulator has 3 controls . a power lever on/off. an 'o2' lever ?

Question 43-38 : The power lever on on and the 'o2' lever on normal allows the oxygen to enter the regulator and enables breathing of a mixture of air/oxygen according to altitude with the emergency lever on off in an emergency situation one cannot use the oxygen mask to breathe the 'o2' lever on on enables breathing of the over pressure oxygen at a constant flow rate the emergency lever on on enables breathing of pure oxygen at ambient pressure

exemple 291 The power lever on on, and, the 'o2' lever on normal allows the oxygen to enter the regulator and enables breathing of a mixture of air/oxygen according to altitude. — Pilot oxygen mask is an on demand type mask The power lever on on, and, the 'o2' lever on normal allows the oxygen to enter the regulator and enables breathing of a mixture of air/oxygen according to altitude.

In case of smoke in the cockpit the crew oxygen regulator must be set to ?

Question 43-39 : Emergency normal 100% on demand

exemple 295 Emergency. — Img1060 Emergency.

The installation and use of on board oxygen generators is such that .1 the ?

Question 43-40 : 1 and 3 2 and 4 2 and 3 1 and 4

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