Question 50-1 : The purpose of the blow in doors at the air inlets is to ? [ Program pilot ]

Question 50-2 : The most common extinguishing agent used in gas turbine engine fire protection systems is ?

A liquid halogenated extinguishing agent and pressurized gas typically nitrogen .

Question 50-3 : When a part of a continuous loop fire detection system is heated 1 its resistance decreases 2 its resistance increases3 the leakage current increases4 the leakage current decreasesthe combination regrouping all the correct statements ?

1 and 3.

Question 50-4 : A fault protection circuit in a fire detection system will ?

Inhibit the fire detector when the detection line is connected to ground.

A fault protection circuit in a fire detection system will inhibit fire detection when the detection line is connected to ground so if a fire detection system with no fault protection has single loop continuous components if the line is accidentally grounded the alarm will be triggered

Question 50-5 : In a fire detection system with single loop continuous components with no fault protection if the line is accidentally grounded ?

The fire alarm is triggered.

Question 50-6 : When a continuous loop wire type fire detection system is tested ?

The wiring and the warning are tested.

Question 50-7 : Regarding fire detection ion detectors are used to detect ?

Smoke.

Question 50-8 : Smoke detector systems are installed in the ?

Upper cargo compartments class e .

Question 50-9 : Continuous loop fire detector systems operate on the principle that an increase in temperature produces ?

Question 50-10 : Generally when the fire handle of the engine fire extinguishing system on an aircraft is pulled the effects are 1 close the engine fuel valve2 opening of the bleed air valves and hp valves on the engine concerned3 arming of the extinguishing system4 close the engine bleed air and anti ice valves ?

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 bottlerotating 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

Question 50-11 : On a multi engined aircraft a fire detection system includes ?

Question 50-12 : On an aircraft provided with resistance and capacitance variation type fire detection loops a fire alarm is initiated by a temperature increase detected ?

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

Question 50-13 : Smoke detectors fitted on transport aircraft are of the following type ?

Optical or ionization.

Question 50-14 : The bimetal strip detectors of an engine fire detection system 1 are arranged in series2 are arranged in parallel3 open during a fire4 close during a firethe combination containing all of the correct statements is ?

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 >jaqmgkxk2q8the 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 fireit 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

Question 50-15 : When a bimetallic strip is used as a switch in a fire detection loop a fire alarm is triggered after a delay the purpose of this delay is to ?

Avoid false alarms in case of vibrations.

Question 50-16 : An engine fire is indicated by a n ?

Warning and an aural alert.

Question 50-17 : A continuous loop detector system is a ?

Overheat detection system.

Question 50-18 : At reference the smoke detection in the aircraft cargo compartments is carried out by four sensors c1 c2 c3 and c4they are associated with the logic circuit as described in the annexthe repeating bell is activated when 945 ?

The c1 and c2 sensors detect smoke.

Notice c3 and c4 will also trigger the alarm 941

Question 50-19 : A gaseous fire loop system is tested by ?

Heating up the sensor.

Question 50-20 : Power plant fire extinguishers are operated by ?

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

Question 50-21 : A fire detection system includes ?

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

Question 50-22 : The correct statement about rain protection for cockpit windshields is that ?

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

Question 50-23 : Fire precautions to be observed before refuelling are ?

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 earthedbonded

Question 50-24 : Overheat detection systems in a transport aircraft are installed in the ?

Question 50-25 : In a pressurized transport aircraft the protective breathing equipment ?

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

Question 50-26 : When quick donning masks are in use the pilot is ?

Able to radiotelephone.

Question 50-27 : What is breathed in when using a passenger oxygen mask ?

Cabin air and oxy.

An oxygen mask consists of a yellow soft silicone facial cup with white elastic bands for securing the mask to the passenger's face 1059chemical 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 flowat 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

Question 50-28 : The purpose of the regulator of a flight deck oxygen system is to 1 increase pressure in the bottles2 supply 100% oxy3 supply diluted oxy4 supply oxygen on demand5 supply oxygen at emergencypositive pressure6 trigger the cabin altitude warningthe combination regrouping all the correct ?

2 3 4 and 5.

Question 50-29 : A diluter demand oxygen regulator selected to '100%' ?

Delivers oxygen flow when inhaling.

Question 50-30 : In jet transport aircraft breathing oxygen for the cockpit is usually stored in the following state ?

Gaseous.

Question 50-31 : In what state is the breathing oxygen for the cockpit of jet transport aeroplanes stored ?

Gaseous.

Question 50-32 : If the maximum operating pressure of the oxygen system is exceeded the ?

Oxygen is discharged overboard via a safety plug.

Question 50-33 : A pressurized aircraft is operated at fl 300 it undergoes a rapid decompression so that the pressure in the cabin goes quickly down to the outside pressure value what happens concerning the oxygen system ?

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

Question 50-34 : A substance which may never be used in the vicinity or on parts of an oxygen installation is ?

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 pressureheat and pressure are just two means of producing the same effect ie jamming molecules together with enough force to trigger a chemical reactionso 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

Question 50-35 : The type of a aircraft oxygen system intended for use by passengers is mostly ?

A continuous flow 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 passengeran oxygen mask consists of a yellow soft silicone facial cup with white elastic bands for securing the mask to the passenger's face 1059chemical 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

Question 50-36 : The demand valve of a diluter demand type oxygen regulator in normal mode operates when the ?

User breathes in.

Question 50-37 : Modern pressurized transport aeroplanes are equipped with ?

Two independent oxygen systems one supplying the cockpit the other the cabin.

Question 50-38 : When selected to normal the oxygenair ratio of the mixture supplied by the cockpit oxygen system regulator ?

Increases when the altitude increases.

Question 50-39 : When a cabin oxygen mask is pulled downwards the passenger breathes ?

A mixture of oxygen and cabin air.

Question 50-40 : Chemical oxygen generators are used to furnish oxygen to the 1 cockpit2 cabin3 toilets4 smoke hoodthe combination that regroups all of the correct statements is ?

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 hoodchemical oxygen generators advantages are reduced weight and volume easy storage and maintenance no risk of explosion and no maintenance