A350-900 Aircraft Smoke Detection Function Quiz
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Questions and Answers

What type of smoke detector is used in the aircraft?

  • Cabin ambient-type smoke detector (correct)
  • Infrared smoke detector
  • Cockpit smoke detector
  • Ionization smoke detector

    • How many optical channels does the smoke detector have?

  • One optical channel
  • Three optical channels
  • Four optical channels
  • Two optical channels (correct)

    • What happens if the concentration of airborne combustion particles exceeds the specified limit?

  • The smoke detector increases sensitivity
  • The smoke detector shuts off
  • The smoke detector decreases sensitivity
  • The smoke detector triggers an alarm (correct)

    • Where are the smoke detectors located on the aircraft?

    <p>Lavatories, Crew Rest Compartments, cargo, avionics compartment, and IFE control centres</p> Signup and view all the answers

    How does the smoke detection function communicate with the crew when smoke is detected?

    <p>Through aural and visual alerts via Cabin Intercommunication Data System (CIDS)</p> Signup and view all the answers

    What does the SDF indicate if a smoke detector malfunctions or does not send any signal?

    <p>'Smoke sensor fault' (INOP) on the FAP</p> Signup and view all the answers

    What feature of the smoke detector helps reduce false alarm conditions?

    <p>Thermal channel and two optical channels</p> Signup and view all the answers

    Why is the smoke detector concealed?

    <p>To avoid interfering with the cabin aesthetics</p> Signup and view all the answers

    What is the primary evacuation path for the Flight Crew Rest Compartment (FCRC)?

    <p>Main entrance door</p> Signup and view all the answers

    When must the Crew Rest Compartment (CRC) not be occupied?

    <p>During taxi, takeoff and landing</p> Signup and view all the answers

    How many different crew rest compartments are provided for flight crew and cabin crew?

    <p>One each</p> Signup and view all the answers

    What is the main entry door considered in the Crew Rest Compartment (CRC)?

    <p>Primary exit</p> Signup and view all the answers

    In what circumstances should an incapacitated crewmember be evacuated via the escape hatch?

    <p>If the main entry door is not accessible</p> Signup and view all the answers

    What is the purpose of the escape hatch in the Crew Rest Compartment (CRC)?

    <p>To evacuate an incapacitated crewmember if the main entry door is not accessible</p> Signup and view all the answers

    Which crew member has the authority to decide whether an incapacitated crewmember should remain in the Crew Rest Compartment (CRC)?

    <p>PIC (Pilot-in-Command)</p> Signup and view all the answers

    What should you not do when an emergency door opening procedure has been initiated?

    <p>Attempt to hold the door closed</p> Signup and view all the answers

    What equipment must be fitted in the Flight Crew Rest Compartment (FCRC) for it to be occupied during taxi, takeoff, and landing?

    <p>Appropriate equipment</p> Signup and view all the answers

    In case of a cabin pressure differential, what will not trigger when the emergency door is in the armed mode?

    <p>Aural alert</p> Signup and view all the answers

    When opening the door from outside, which step involves pulling the door outward and forward until the gust lock engages?

    <p>Lower the door control handle into the recess</p> Signup and view all the answers

    What happens if the slideraft is armed when the door is opened from the outside?

    <p>The slideraft automatically disarms</p> Signup and view all the answers

    Which action is advised if power-assistance fails during an emergency door opening?

    <p>Use additional force to manually open the door</p> Signup and view all the answers

    What should you do after lifting the DOOR CONTROL HANDLE fully up when opening the door from outside?

    <p>Pull the door outward and forward until gust lock engages</p> Signup and view all the answers

    What does it mean when it is stated that an emergency door opening is always power-assisted?

    <p>Power is needed to open the emergency door</p> Signup and view all the answers

    In which mode will the red cabin pressure indicator and aural alert not trigger during a cabin pressure differential?

    <p>'Armed' mode</p> Signup and view all the answers

    What triggers the oxygen masks to drop from the Passenger Service Units (PSUs) in an A350 aircraft during a decompression event?

    <p>The pre-recorded decompression announcement activates automatically</p> Signup and view all the answers

    What is the minimum duration for which the cabin fixed oxygen system on an A350 aircraft is designed to provide oxygen to cabin occupants during a decompression event?

    <p>45 minutes</p> Signup and view all the answers

    Where are the oxygen masks for cabin occupants stowed on an A350 aircraft?

    <p>Above the passenger seats</p> Signup and view all the answers

    What is the purpose of the test lever on the cabin oxygen containers on an A350 aircraft?

    <p>Both A and B</p> Signup and view all the answers

    During a decompression event on a B737 aircraft, what aural warning is triggered in the Flight Deck?

    <p>A distinct aural warning</p> Signup and view all the answers

    On which aircraft type(s) do the oxygen masks drop from the Passenger Service Units (PSUs) and the pre-recorded decompression announcement activate automatically during a decompression event?

    <p>Both A350 and A330</p> Signup and view all the answers

    At what cabin altitude range is a decompression event considered uncontrolled, according to the information provided?

    <p>Between 13,800 and 14,000 feet</p> Signup and view all the answers

    Where are the oxygen masks for crew members located on an A350 aircraft?

    <p>Both B and C</p> Signup and view all the answers

    What is the first step in evacuating an incapacitated person from the FCRC escape hatch?

    <p>Supporting the head and neck, move the incapacitated person towards the emergency hatch to sit on the FCRC seat</p> Signup and view all the answers

    Who is responsible for opening the emergency hatch when evacuating from the FCRC escape hatch?

    <p>CC1</p> Signup and view all the answers

    What is the role of CC2, CC3, and CC4 when evacuating from the FCRC escape hatch?

    <p>They standby under the emergency hatch and guide the incapacitated person's head towards the hatch</p> Signup and view all the answers

    What is the first step in evacuating an incapacitated person from the FCRC main entry door?

    <p>Move the incapacitated person towards the door, with the feet first</p> Signup and view all the answers

    Who is responsible for guiding the incapacitated person's feet first when evacuating from the FCRC main entry door?

    <p>CC2, CC3, and CC4</p> Signup and view all the answers

    What is the role of CC1 when evacuating from the FCRC main entry door?

    <p>They support the chest and head of the incapacitated person and slide them out of the door</p> Signup and view all the answers

    What is the purpose of the FCRC escape hatch?

    <p>To evacuate incapacitated persons from the FCRC</p> Signup and view all the answers

    How many cabin crew members are involved in the evacuation of an incapacitated person from the FCRC escape hatch?

    <p>4</p> Signup and view all the answers

    What is the primary difference between evacuating an incapacitated person from the FCRC escape hatch and the FCRC main entry door?

    <p>The direction the incapacitated person is moved</p> Signup and view all the answers

    What is the purpose of the FCRC main entry door?

    <p>To provide access to the FCRC for cabin crew</p> Signup and view all the answers

    Study Notes

    Smoke Detectors in Aircraft

    • Aircraft use optical smoke detectors, which have dual optical channels for enhanced reliability.
    • If airborne combustion particle concentration exceeds a set limit, alarms activate and crew are alerted to potential fire risks.
    • Smoke detectors are installed in various key locations to ensure prompt detection in all compartments.
    • The smoke detection system must communicate alerts to the crew, typically through visual indicators and auditory alarms.
    • The Smoke Detection Fault (SDF) signal indicates a malfunctioning smoke detector or lack of signal transmission.
    • The design of smoke detectors includes features that minimize false alarms, such as filtering capabilities.

    Crew Rest Compartment (CRC) Protocols

    • The primary evacuation path from the Flight Crew Rest Compartment (FCRC) is through designated exits.
    • Crew Rest Compartment (CRC) must remain unoccupied during specific phases of flight, such as taxi, takeoff, and landing.
    • Both flight crew and cabin crew have dedicated crew rest compartments to ensure adequate rest during operations.
    • The FCRC's main entry door serves as a crucial access point for both ingress and egress.
    • An incapacitated crewmember should be evacuated via the escape hatch during emergencies when safe to do so.
    • The escape hatch in the CRC allows for rapid evacuations in critical situations.
    • The flight crew member has the final authority on whether an incapacitated person stays in the CRC.

    Emergency Procedures and Equipment

    • Do not initiate any actions that may compromise safety when an emergency door opening procedure is in progress.
    • The Flight Crew Rest Compartment (FCRC) requires specific equipment to be installed for occupancy during critical flight phases.
    • In armed mode, the emergency door will remain sealed even in cabin pressure differential scenarios.
    • Opening the door from outside involves a specific step of pulling it outward and forward to engage the gust lock.
    • If the slideraft is armed during an outside door opening, unintended evacuation may occur.
    • If power-assistance fails, follow standard manual opening procedures to operate the emergency door.
    • After operating the door control handle from outside, ensure full opening and secure the door correctly.

    Cabin Pressure and Oxygen System in A350 Aircraft

    • Emergency door openings are always facilitated by power assistance, ensuring efficient operation.
    • The red cabin pressure indicator and aural alerts do not activate during certain pressure differential modes.
    • Oxygen masks drop automatically from Passenger Service Units (PSUs) during cabin decompression events.
    • The cabin fixed oxygen system in the A350 is designed to provide oxygen for a minimum specified duration during emergencies.
    • Cabin occupant oxygen masks are stowed conveniently within reach in the A350.
    • The test lever on cabin oxygen containers allows crew to check operational readiness.

    Aural Warnings and Decompression Events

    • In the B737 aircraft, a specific aural warning triggers in the Flight Deck during decompression.
    • Decompression events automatically activate oxygen mask deployment and pre-recorded announcements on certain aircraft types.
    • An uncontrolled decompression event is defined by reaching a specific cabin altitude threshold.
    • Oxygen masks for crew members are stored near their respective operational positions in the A350.

    Evacuation Procedures for Incapacitated Crew

    • The first step in evacuating an incapacitated person from the FCRC escape hatch involves stabilizing the individual during the exit.
    • A designated crew member is responsible for safely opening the emergency hatch.
    • CC2, CC3, and CC4 support the evacuation by assisting in maneuvering and guiding the incapacitated crew member.
    • Evacuating an incapacitated person through the FCRC main entry door differs from the escape hatch in operational steps.
    • Guidance while evacuating through the main entry door is primarily the responsibility of CC1.
    • The FCRC escape hatch serves as a vital alternative exit during emergencies.
    • Evacuating from the FCRC involves coordinated effort from all crew members present to assure safety and compliance.

    Summary of FCRC Entry and Exit

    • The FCRC main entry door acts as an essential access point, ensuring rapid entry and exit when necessary.

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    Description

    Test your knowledge on the smoke detection function (SDF) of the A350-900 aircraft. This quiz covers topics such as the type of smoke detector used, its features, and its role in ensuring passenger safety.

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