Modern pressurized transport aeroplanes are equipped with ? [ Teaching aircraft ]

Question 51-1 : 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 151 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 51-2 : Increases when the altitude increases decreases when the altitude increases is constant whatever the altitude is 100%

exemple 155 Increases when the altitude increases. — Increases when the altitude increases.

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

Question 51-3 : A mixture of oxygen and cabin air pure oxygen under pressure pure oxygen at the ambient pressure cabin air under pressure

exemple 159 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 51-4 : 2 3 4 1 2 1 3 1 4

exemple 163 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 51-5 : 15 minutes 30 minutes 2 hours 5 minutes

exemple 167 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 51-6 : 1 3 and 5 1 2 3 4 and 5 2 4 and 5 2 3 and 4

exemple 171 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 51-7 : 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 175 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 51-8 : 1 2 1 3 2 4 2 3

A passenger emergency mask is a ?

Question 51-9 : 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 183 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 51-10 : 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 187 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 51-11 : 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 191 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 51-12 : Emergency normal 100% on demand

exemple 195 Emergency. — Img1060 Emergency.

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

Question 51-13 : 1 and 3 2 and 4 2 and 3 1 and 4

The replenishment of an onboard oxygen bottle must be done ?

Question 51-14 : With the engine s off with the engine s on with the engine s at idle with a ground power unit connected electrical power supplied

exemple 203 With the engine(s) off. — With the engine(s) off.

The contents of an oxygen bottle can be ensured by the .1 weight.2 pressure.3 ?

Question 51-15 : 1 and 2 only 1 and 3 only 2 and 3 only 1 and 4 only

exemple 207 1 and 2 only. — .a full cylinder of oxygen weighs a lot more than empty one the content can also be checked by reading the pressure gauge 1 and 2 only.

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

Question 51-16 : User breathes in user breathes out user requires 100% oxygen pressure in the oxygen reservoir is more than 500 psi

exemple 211 User breathes in. — User breathes in.

A passenger oxygen mask is ?

Question 51-17 : A continuous flow mask and in principle should not be used if there is smoke in the cabin an on demand type mask and in principle should not be used if there is smoke in the cabin a continuous flow mask and must be used if there is smoke in the cabin an on demand type mask and must be used if there is smoke in the cabin

exemple 215 A continuous flow mask and in principle should not be used if there is smoke in the cabin. — A continuous flow mask and in principle should not be used if there is smoke in the cabin.

A smoke hood is a device covering ?

Question 51-18 : The whole head and with a continuous oxygen flow the whole head and with an oxygen flow only on demand only the nose and the mouth and with an oxygen/air mix only the nose and the mouth and with a continuous oxygen flow

exemple 219 The whole head and with a continuous oxygen flow. — A smoke hood has continuous flow it is a protective breathing equipment pbe . >x2pjcxp m2e. basilismail .is this question different from question number 718 wich says that a smoke mask is a mask with flow on request and not continuous ..question 718 is about a smoke mask which is different from a hood ..a smoke mask is a device covering the whole face and with an oxygen flow only on demand The whole head and with a continuous oxygen flow.

Regarding the chemical oxygen generator to enable the oxygen to flow the ?

Question 51-19 : Firmly pull the mask towards his face operate the relevant switch in his armrest firmly pull the door compartment of the oxygen mask storage turn the oxygen valve to open

exemple 223 Firmly pull the mask towards his face. — Firmly pull the mask towards his face.

Fixed oxygen systems in pressurised aeroplanes are used to provide oxygen .1 ?

Question 51-20 : 1 4 1 2 4 3 2 3

When using an emergency oxygen mask a pilot is able to ?

Question 51-21 : Both transmit and receive receive only transmit only neither transmit or receive

exemple 231 Both transmit and receive — Both transmit and receive

A smoke mask is a ?

Question 51-22 : Mask with flow on request and covers the whole face continuous flow mask and covers the whole face mask with flow on request and covers only the nose and the mouth continuous flow mask and covers only the nose and the mouth

exemple 235 Mask with flow on request and covers the whole face. — Mask with flow on request and covers the whole face.

Which of these statements about chemical oxygen generators are correct or ?

Question 51-23 : I is incorrect ii is incorrect i is correct ii is correct i is incorrect ii is correct i is correct ii is incorrect

exemple 239 I is incorrect, ii is incorrect. — I is incorrect, ii is incorrect.

Which of these statements about chemical oxygen generators are correct or ?

Question 51-24 : I is correct ii is incorrect i is incorrect ii is incorrect i is incorrect ii is correct i is correct ii is correct

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

Which of these statements about chemical oxygen generators are correct or ?

Question 51-25 : I is correct ii is correct i is incorrect ii is incorrect i is incorrect ii is correct i is correct ii is incorrect

exemple 247 I is correct, ii is correct. — I is correct, ii is correct.

Which of these statements about chemical oxygen generators are correct or ?

Question 51-26 : I is incorrect ii is correct i is correct ii is correct i is incorrect ii is incorrect i is correct ii is incorrect

exemple 251 I is incorrect, ii is correct. — .chemical oxygen generators are used to supply the cockpit oxygen system incorrect cockpit oxygen is carried in a gaseous state pressurised in cylinders to 1800 psi greater autonomy reversible functioning and possibility to regulate flow .the oxygen supply of chemical oxygen generators once activated cannot be switched off correct 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 I is incorrect, ii is correct.

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

Question 51-27 : 1 2 4 and 6 1 2 3 4 5 and 6 2 3 and 5 1 3 4 and 5

exemple 255 1, 2, 4 and 6 — 1, 2, 4 and 6

The disadvantages of a chemical oxygen source for the passenger cabin are . 1 a ?

Question 51-28 : 1 3 and 5 1 2 3 4 and 5 2 and 4 1 2 3 and 5

The advantages of a gaseous oxygen source compared with a chemical source for ?

Question 51-29 : 2 3 1 only 2 only 1 2

High frequency vibration usually emanates from ?

Question 51-30 : Transmission shafting the main rotor gearbox the engine or tail rotor the main rotor blades

exemple 267 Transmission shafting. — Transmission shafting.

The sand filter located at the air intake of a gas turbine engine ?

Question 51-31 : Reduces the efficiency of the air intake increases the efficiency of the air intake has no effect on the efficiency of the air intake has an effect on the efficiency of the compressor only

exemple 271 Reduces the efficiency of the air intake. — Reduces the efficiency of the air intake.

Warning lights associated with basic pitot/static heating systems in ?

Question 51-32 : Either the heating element or the power relay has failed the heating element has failed the power supply to the system has failed the heating system is on and the heater is cycling on/off

exemple 275 Either the heating element or the power relay has failed. — Either the heating element or the power relay has failed.

Helicopter engine bellmouth air intakes ?

Question 51-33 : May be heated by either hot oil electric mats or engine bleed air are always heated by engine bleed air from the engine compressor are always heated by electrically heated mats are not heated

exemple 279 May be heated by either hot oil, electric mats or engine bleed air. — . bell mouth inlet duct a form of convergent inlet air duct used to direct air into the inlet of a gas turbine engine the area of the duct gets smaller as the air flows into the engine the duct is very efficient especially where ram pressures are low as in helicopter engines where it is used widely .it may be heated by either hot oil electric mats or engine bleed air May be heated by either hot oil, electric mats or engine bleed air.

Heating systems for helicopters may obtain hot air from the following sources ?

Question 51-34 : 1 3 2 3 2 1

Warning devices associated with air conditioning systems fitted in helicopters ?

Question 51-35 : A green system ''on'' information light and amber bleed air failure lights amber bleed air failure warning lights and red fire warnings for three wheel air cycle machine failure a green system serviceable light and an amber warning light an amber system ''on'' information light a green serviceable light and either a red or amber duct overpressure light

exemple 287 A green system ''on'' information light and amber bleed air failure lights. — A green system ''on'' information light and amber bleed air failure lights.

The most common type of starter used on a helicopter engine is ?

Question 51-36 : A d c starter/generator a d c starter motor an a c starter/generator an a c starter motor

exemple 291 A d.c starter/generator. — A d.c starter/generator.

The most common material used in the construction of gearbox casings is ?

Question 51-37 : Magnesium alloy aluminium alloy steel alloy titanium alloy

exemple 295 Magnesium alloy. — Magnesium alloy.

For a large helicopter ram air ventilation ?

Question 51-38 : May be provided throughout the cockpit and cabin through a series of ducts is provided to pilots only is ducted from the downwash of the main rotors to gasper ducts throughout the helicopter may be provided throughout the cabin from ducts in doors only

exemple 299 May be provided throughout the cockpit and cabin through a series of ducts. — May be provided throughout the cockpit and cabin through a series of ducts.

The throttle control may be interconnected with ?

Question 51-39 : The collective lever to increase power with increased pitch application the collective lever to decrease power with increased pitch application the yaw pedals to increase tail rotor speed for directional control inputs the cyclic stick to increase power for cyclic control inputs

exemple 303 The collective lever, to increase power with increased pitch application. — The collective lever, to increase power with increased pitch application.

The purpose of the primary stops in a flying control system is to ?

Question 51-40 : Restrict the movement of the controls within the correct range prevent damage to the system when the helicopter is parked in high winds act as a stop in case of vibration of the controls bring the main and tail rotors to rest as soon as possible after shut down

exemple 307 Restrict the movement of the controls within the correct range. — Restrict the movement of the controls within the correct range.

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1999 Free Training Exam