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Questions and Answers

On ground the start sequence is automatically aborted:

  • There is no automatic abort sequence
  • Only in the case of hot start or hung start
  • Only in the case of no light up
  • In case of hot start, hung start, stall or no light up (correct)

    • During an automatic start on ground, the sequence is:

  • Ignition by N2>16%, HP fuel valve opening by 22%, start valve closure by N2>50% (correct)
  • Ignition and HP fuel valve opening by N2>16 %, start valve closure by N2>50%
  • Ignition and HP fuel valve opening by N2 22%, start valve closure by N2>50%
  • Ignition by N2>16%, HP fuel valve opening by N2>22%, start valve closure by setting mode selector to NORM

    • Thrust reversers are actuated by:

  • Hydraulic actuators; green for engine one, yellow for engine two (correct)
  • Hydraulic actuator; green for both engines
  • Hydraulic actuators; blue for engine 1, yellow for engine 2
  • Pneumatic actuators

    • The FADEC is electrically supplied by:

    <p>Self-powered above 15% N2</p> Signup and view all the answers

    In manual mode, when the thrust levers are between the climb detent and idle:

    <p>Each position of the levers corresponds to an N1</p> Signup and view all the answers

    What is the EGT limit at TOGA power setting on the A320 CEO:

    <p>950 ̊C</p> Signup and view all the answers

    What is the maximum continuous oil temperature:

    <p>140 ̊C</p> Signup and view all the answers

    The max continuous oil temp limit may be exceeded. What is the limit and under what conditions:

    <p>155 ̊C for less than 15 mins</p> Signup and view all the answers

    What is the minimum starting oil temperature:

    <p>-40 ̊C</p> Signup and view all the answers

    What is the minimum oil quantity for dispatch (A320 CEO):

    <p>9.5 quarts + estimated consumption (0.5 Qts/hr)</p> Signup and view all the answers

    What is the minimum oil pressure at ground idle (A320 CEO):

    <p>13 psi</p> Signup and view all the answers

    What is the maximum N1 (A320 CEO):

    <p>104%</p> Signup and view all the answers

    What is the maximum N2 (A320 CEO):

    <p>105%</p> Signup and view all the answers

    What is the maximum N2 for starter engagement (A320 CEO):

    <p>20%</p> Signup and view all the answers

    What restrictions apply to the operation of the starter during an automatic start on the ground?

    <p>20 second pause after 3 start attempts (1 cycle)</p> Signup and view all the answers

    Starter cooling time requirements are:

    <p>15 min cooling time after 4 cycles of 3 start attempts per cycle</p> Signup and view all the answers

    The maximum reverse thrust may be used down to:

    <p>70 kts (idle reverse down to A/C stop)</p> Signup and view all the answers

    What is the (A321) maximum allowable flex temperature:

    <p>ISA + 52 ̊C</p> Signup and view all the answers

    Reduced thrust is not permitted:

    <p>On a contaminated runway or with one or more reverser INOP</p> Signup and view all the answers

    In manual thrust, in cruise, the pilot should limit the N1. What is this limit (A320)?

    <p>Displayed max climb N1, minus 1.9%</p> Signup and view all the answers

    Is the maximum cruise N1 displayed on the upper ECAM?

    <p>No</p> Signup and view all the answers

    At Toulouse (500 ft); TREF is 29 ̊C, outside air temp is 36 ̊C, and you found a corrected Flex TEMP of 33 ̊C, is it possible to use flex thrust for take-off?

    <p>No, flex temp 33 ̊C is not allowed because it is less than OAT</p> Signup and view all the answers

    EGT indication on the A320 CEO becomes red on E/W display when the EGT is higher than:

    <p>950 ̊C</p> Signup and view all the answers

    What is FADEC?

    <p>A digital control system that performs complete engine management consisting of the electronic control unit and its peripheral sensors and components</p> Signup and view all the answers

    The FADEC system is:

    <p>Self-powered above 15% N2 with A/C power when N2 is below 15%</p> Signup and view all the answers

    What device provides direct closure of the HP shut off valve:

    <p>The master switch at off position</p> Signup and view all the answers

    Which valve ensures an adequate fuel flow:

    <p>The fuel metering valve of the HMU</p> Signup and view all the answers

    Is the engine still supplied in case of fuel filter clog:

    <p>Yes, by by-passing the fuel filter (by-pass valve)</p> Signup and view all the answers

    Cranking may be manually selected by setting

    <p>With master switch to off, the mode selector to crank and the man start PB to on</p> Signup and view all the answers

    During an automatic starting sequence, the pack valves close when:

    <p>Packs are on and IGN/START is selected</p> Signup and view all the answers

    During an automatic starting sequence (A320 CEO):

    <p>Start valve closes at N2 &gt; 50%</p> Signup and view all the answers

    Maximum EGT during engine start on the A320 CEO is:

    <p>725 ̊C</p> Signup and view all the answers

    The FADEC automatically selects continuous ignition in the following cases:

    <p>In flight automatic restart or engine flame out or EIU failure</p> Signup and view all the answers

    How is the oil cooled?

    <p>By the engine fuel / oil heat exchanger and the servo fuel heater</p> Signup and view all the answers

    The oil pressure indicator becomes red when pressure is lower than (A320 CEO):

    <p>13 psi</p> Signup and view all the answers

    In autothrust mode the thrust computed by the FMGC is limited:

    <p>To the value corresponding to the thrust lever position (unless the alpha floor mode is activated)</p> Signup and view all the answers

    The thrust reverser activation conditions are:

    <p>Aircraft on the ground and thrust lever between reverse idle detent and max reverse</p> Signup and view all the answers

    REV green appears on the N1 indicator when:

    <p>The reverse doors are fully deployed</p> Signup and view all the answers

    Reverse deployment requires TLA signal from the SECs; one reverse will be lost if:

    <p>SECs 1+2 fail or SECs 1+3 fail</p> Signup and view all the answers

    The low pressure rotor (N1) consists of:

    <p>A front fan - 4 stage booster - 4 stage LP turbine</p> Signup and view all the answers

    A/THR can be engaged:

    <p>Automatically when the pilot initiates a take-off or a go- around or if alpha floor is detected after take-off and up to 100 ft radio on landing</p> Signup and view all the answers

    In flight, if the instinctive disconnect pushbutton is pressed for more than 15 secs, the A/THR including alpha floor is:

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

    At take-off as soon as the power is set (FLX or TOGA):

    <p>A/THR function is armed but not active</p> Signup and view all the answers

    After a FLX take-off, you have an engine failure and you want to select MCT:

    <p>You set the thrust levers out of the FLX/MCT detent then back to FLX/MCT position</p> Signup and view all the answers

    Pressing the engine fire P/B switch on the engine fire panel causes the closure of:

    <p>Fuel LP valve</p> Signup and view all the answers

    ASYM amber message (FMA) means:

    <p>One thrust lever is set out of climb detent (both engines running)</p> Signup and view all the answers

    LVR MCT flashing white message (left hand side of FMA) means:

    <p>Thrust levers are not in MCT position after engine failure when speed is greater than green dot</p> Signup and view all the answers

    LVR CLB flashes white on the FMA if the throttles are not in the climb position when:

    <p>The A/C is above the altitude of thrust reduction</p> Signup and view all the answers

    The thrust rating limit is computed by:

    <p>The FADEC (ECU) according to the thrust lever position</p> Signup and view all the answers

    Study Notes

    Automatic Start Sequence Abort

    • The automatic start sequence on the ground is aborted under specific conditions.

    Thrust Reversers

    • Actuation of thrust reversers occurs automatically during the thrust computation.

    FADEC Electrical Supply

    • FADEC is supplied with electrical power to manage the engine functions efficiently.

    Manual Mode Thrust Levers

    • When thrust levers are positioned between the climb detent and idle, specific operational limits apply.

    EGT Limits

    • The EGT limit at TOGA power setting on the A320 CEO is critical for engine safety.

    Oil Temperature and Limits

    • The maximum continuous oil temperature limit can be exceeded under certain conditions, providing operational flexibility.
    • Minimum starting oil temperature is required to ensure proper engine function.

    Minimum Oil Requirements

    • Minimum oil quantity for dispatch on the A320 CEO is vital for engine operation.
    • Minimum oil pressure at ground idle must be maintained for safe engine performance.

    N1 and N2 Limits

    • Maximum N1 and N2 values are established for engine performance criteria.
    • The maximum N2 for starter engagement is set to protect engine components during startup.

    Starter Operation Restrictions

    • During automatic starts on the ground, there are specific restrictions to starter operation to ensure safety.
    • Starter cooling time requirements must be adhered to after multiple starts.

    Reverse Thrust Usage

    • The maximum reverse thrust may be deployed to certain speeds during landing.

    A321 Flex Temperature

    • The maximum allowable flex temperature for the A321 is established to optimize performance during takeoff.

    Thrust Management

    • Reduced thrust is restricted under specific operational conditions to maintain safety and performance.
    • In cruise manual thrust, N1 should be limited to avoid engine overstress.

    Flex Thrust Use

    • At Toulouse conditions, if the corrected Flex TEMP is acceptable, flex thrust can be used for take-off.

    EGT Indications

    • EGT indication on the A320 CEO becomes red when exceeding predefined limits on the E/W display.

    FADEC System

    • FADEC (Full Authority Digital Engine Control) manages engine parameters for optimal performance and safety.

    Fuel System Valves

    • The HP shut-off valve closure is facilitated by a specific device to prevent fuel flow in emergencies.
    • An adequate fuel flow is ensured by a designated valve during engine operation.

    Engine Fuel Supply

    • Engine continues to receive fuel even if the fuel filter becomes clogged, ensuring operational reliability.

    Cranking Selection

    • Cranking may be manually activated by specific cockpit controls.

    Pack Valves During Start

    • During an automatic starting sequence, pack valves close to redirect airflow.

    Engine Start EGT

    • Maximum EGT during engine start on the A320 CEO is defined to prevent engine damage.

    Continuous Ignition

    • FADEC automatically activates continuous ignition under critical flight conditions to ensure engine reliability.

    Oil Cooling and Pressure

    • Oil is cooled through an efficient cooling system; pressure indicators turn red below a certain threshold on the A320 CEO.

    Autothrust Mode

    • In autothrust mode, thrust calculated by FMGC is inherently limited based on flight parameters.

    Thrust Reverser Conditions

    • Activation of thrust reversers occurs when specific conditions are met, enhancing aircraft deceleration.

    Engine Thrust Indications

    • REV green appears on the N1 indicator when thrust reversers are ready for deployment.
    • A TLA signal from the SECs is required for reverse thrust deployment; one system may be lost under certain conditions.

    Low Pressure Rotor N1

    • The low pressure rotor (N1) is designed to optimize engine performance efficiently.

    A/THR Engagement

    • A/THR can be engaged under specific operational conditions to maintain desired thrust levels.

    Disconnect Procedures

    • If the instinctive disconnect pushbutton is engaged for more than 15 seconds, including alpha floor, A/THR is initialized.

    Take-off Power Settings

    • At take-off, power settings such as FLX or TOGA are crucial for optimal performance.

    Engine Failure Procedures

    • After a FLX take-off with an engine failure, selecting MCT becomes necessary for safe operation.

    Engine Fire Response

    • Activation of the engine fire P/B switch on the engine fire panel results in the closure of relevant fuel flow systems.

    FMA Messages

    • ASYM amber message indicates asymmetrical thrust conditions requiring pilot attention.
    • LVR MCT flashing white message on the FMA signals non-compliance with thrust lever positioning during specific flight phases.
    • LVR CLB flashes white if throttles are not positioned correctly during climb, indicating a need for adjustment.

    Thrust Rating Computation

    • Thrust rating limits are computed based on several performance factors, ensuring safe operation of the aircraft.

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