ATA 70: Engines Flashcards

Question

ENG\_07 Understand the control functions and indications on the ENG MASTER and ENG panels. **_ENG MASTER PANEL_** **3. ENG START Selector** * CRANK - Used when engine **\_\_\_ \_\_\_\_\_\_** is desired. * Causes both pack valves to _**\_\_\_\_\_\_**_ for _**\_\_**_ seconds. * _**\_\_\_\_\_\_**_ flow and ______ are inhibited. NORM - Engine start, continuous _**\_\_\_\_\_\_**_, and dry _**\_\_\_\_\_\_**_ are not selected. VOL. II, 72.3.3-6

Answer 1

ENG\_07 Understand the control functions and indications on the ENG MASTER and ENG panels. **_ENG MASTER PANEL_** **3. ENG START Selector** * CRANK - Used when engine **_dry cranking_** is desired. * Causes both pack valves to **_close_** for **_30_** seconds. * **_Fuel_** flow and **_ignition_** are inhibited. NORM - Engine start, continuous **_ignition_**, and dry **_cranking_** are not selected. VOL. II, 72.3.3-6

Answer 2

ENG\_07 Understand the control functions and indications on the ENG MASTER and ENG panels. **_ENG MASTER PANEL_** **3. ENG START Selector** IGN/START For engine start: * Both **_FADECs_** are powered by the aircraft’s electrical system. * The **_ENGINE_** page is displayed. * The **_start_** valve and **_air_** pressure indications replace the **_NAC_** temperature indications. * Both **_pack flow control_** valves close. They reopen after [**_30_**] seconds if an **_ENG MASTER_** switch is not selected ON. * During an automatic start, ignition is energized: o On ground when N2 \> **_20%_** (PW) or **_15%_** (GE) o In flight at **_start_** sequence initiation When an engine is running - **_Manuall_**y selects continuous ignition. Note: The igniters are automatically **_deactivated_** following an engine start, as part of the start sequence. The ENG START selector must be moved to **_NORM_** and then **_IGN/START_** to activate continuous ignition. VOL. II, 72.3.3-6

Answer 3

ENG\_07 Understand the control functions and indications on the ENG MASTER and ENG panels. **ENG PANEL** **_1. MAN START Pbs_** * Used when a **_manual_** engine start or engine **_dry cranking_** is desired. ON - With the ENG START selector in the **_IGN/START_** or **_CRANK_** position: * The start valve **_opens_** and **_N2_** increases. * A **_grey_** background is displayed behind the respective engine’s **_N2_** indication. * The **_pack_** valves close. * The engine begins **_rotating_**. Note: The start valve automatically closes: * (PW) when N2 is between **_43% and 48%_** * (GE) when N2 \> **_50%_** VOL. II, 72.3.3-6

Answer 4

ENG\_07 Understand the control functions and indications on the ENG MASTER and ENG panels. **_ENG PANEL_** **2. N1 MODE Pbs (PW only)** * Off (lights out) - Thrust is controlled using **_EPR_** if available. Automatic reversion to **_N1 mode_** is available. * Selected ON - Thrust control of the respective engine changes from EPR mode to **_N1 rated_** mode. * Following an automatic conversion to N1 rated or unrated mode, selection of **_ON_** confirms the mode. VOL. II, 72.3.3-6

Answer 5

ENG\_08 Discuss normal and abnormal indications on the ECAM E/WD page as they relate to the engine system. **1. EPR (PW ONLY)** * Needle and digital value displays **_Engine Pressure Ratio_** in green. * Small needle with 4 green arcs - **_Autothrust target_** EPR. * Small needle with single line green arc - **_EPR_** trend. * Blue circle indicates **_thrust lever_** position. * Amber tick mark - **_Maximum_** EPR (full forward limit of the thrust levers) VOL. II, 72.3.6.1

Answer 6

ENG\_08 Discuss normal and abnormal indications on the ECAM E/WD page as they relate to the engine system. **1. EPR (PW ONLY)** REV - * Displayed in amber when at least **_one_** reverser cowl (on the respective engine) is **_unstowed or unlocked._** * Displayed in green when **_reverse_** mode is selected and both reverser cowls are **_fully deployed_**. AVAIL - * Displayed in **_green_** after engine **_start_** is complete. * **_Pulses_** **_green_** after successful engine **_relight_** in flight. VOL. II, 72.3.6.1

Answer 7

ENG\_08 Discuss normal and abnormal indications on the **ECAM E/WD** page as they relate to the engine system. **2. EGT** Needle and digital value displays the current EGT. * Amber tick mark - Indicates **_max continuous_** EGT limit, and ground **_start_** limit. * Not displayed when **_takeoff thrust_** selected, **_alpha floor_** is active, or **_reverse_** selected. * Red arc - Indicates the **_takeoff_** and **_maximum_** in flight start EGT. * Red tick mark - Indicates the **_maximum_** temperature reached during an **_overtemp_** event. * **_Erased_** during next ground start. VOL. II, 72.3.6.1

Answer 8

ENG\_08 Discuss normal and abnormal indications on the ECAM E/WD page as they relate to the engine system. **3. N1 (PW)** * Needle and digital value displays **_N1_**. * Normally displayed in **_green._** * Displayed in amber if actual N1 exceeds **_100_**%. * • Red arc - Indicates the **_maximum_** permissible **_N1_**. * • Red tick mark - Indicates the **_maximum_** N1 reached if 100% is **_exceeded_**. * **_Erased_** during next ground start. Additional indications in N1 modes: * • N1 digital indication is surrounded by a **_gray_** box. * • Amber tick mark - Indicates the **_current_** N1 limit. * • Blue circle - N1 corresponding to the current **_thrust lever_** position. VOL. II, 72.3.6.1

Answer 9

ENG\_08 Discuss normal and abnormal indications on the ECAM E/WD page as they relate to the engine system. **4. IDLE** * Displayed **_in fligh_**t only, when both engines are at **_idle_** power. * Initially flashes for **_10_** seconds. VOL. II, 72.3.6.1

Answer 10

ENG\_08 Discuss normal and abnormal indications on the ECAM E/WD page as they relate to the engine system. **5. Thrust Limit** * Thrust limit mode as selected by the **_thrust lever_** position. * **_TOGA_**, **_FLX_**, **_CLB_**, or **_MCT_** (displays only **_TOGA or FLX_** on the ground). If a FLX temperature has been entered on the PERF TAKEOFF page (and validated by the FADEC), FLX is followed by the entered **_temperature_**. VOL. II, 72.3.6.1

Answer 11

ENG\_08 Discuss normal and abnormal indications on the ECAM E/WD page as they relate to the engine system. **6. Fuel Flow** * Fuel flow in **_lbs per hour_** for the respective engine. * Displayed in **_green_**. VOL. II, 72.3.6.1

Answer 12

ENG\_08 Discuss normal and abnormal indications on the **ECAM E/WD** page as they relate to the engine system. **7. N2** * **_N2_** rotor speed. * Displayed in a **_filled gray_** box during engine start. * Displayed in **red** when N2 is above 100%. * **_Erased_** during next ground start. * Last digit amber dashed - N2 value **_degraded_** due to **_sensor_** failure. VOL. II, 72.3.6.1

Answer 13

ENG\_08 Discuss normal and abnormal indications on the **ECAM E/WD** page as they relate to the engine system. **-900** * The N1 and N3 engine parameters appear on the **_Engine/Warning_** Display (**_E/WD_**). * The N2 engine parameter appears on the **_ENG_** SD page. * The N1, N2 and N3 engine parameters are current **_rotation_** speeds displayed in **_percentage_**. * The FADEC uses: * The **_N1_** engine parameter to compute the applicable engine thrust. (-302, -900) * The N1, N2 and N3 engine parameters for engine **_control and monitoring_**. VOL. II, -900 Supp 25.2.1.1

Answer 14

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **1. Fuel Used** * Fuel used by the respective engine as computed by the **_FADEC_**. * If accuracy is degraded the figure is **_crossed_** by **_two amber_** lines. * Resets to zero at **_engine_** start. * **_CLOG_** appears below the fuel used figure in case of fuel filter clog. V 2 72.3.7.1

Answer 15

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **2. Oil Quantity** Needle and digital value both Indicate oil **_quantity_** in green. Minimum quantity: **_16_** qts V1 3.4.1 Digital value pulses **_green_** if oil quantity is less than a **_predetermined value_**. V 2 72.3.7.1

Answer 16

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **3. Oil Pressure** Needle and digital value both indicate oil **_pressure_**, normally in green. Indications are **_red_** when oil pressure is **_less_** than a **_predetermined value._** V 2 72.3.7.1

Answer 17

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **_4. Oil Temperature_** Normally displayed in **_green_**. During abnormals, may pulse **_green_** or appear in **_amber_** if greater than a **_predetermined_** value. V 2 72.3.7.1

Answer 18

ENG\_09 Discuss normal and abnormal indications on the **ECAM ENGINE** page. **4. Oil Temperature** Normally displayed in **_green_**. During abnormals, may pulse **_green_** or appear in amber if greater than a **_predetermined_** value. V 2 72.3.7.1

Answer 19

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **5. N1 Vibration** * Engine vibration for N1 **_spool_**, displayed in **_green_**. * Pulses **_green_** above a **_predetermined_** value. **6. N2 Vibration** * Engine vibration for N2 **_spool_**, displayed in **_green_**. * Pulses green above a **_predetermined_** value. V 2 72.3.7.1

Answer 20

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **7. Nacelle Temperatures** * Engine nacelle temperature displayed in **_green_**. * Pulses **_green_** above a **_predetermined_** value (indicated by **_tick mark_**). * Not displayed during **_engine start_**. V 2 72.3.7.1

Answer 21

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **8. Igniters** * Letters IGN are displayed during **_engine start_**. * A, B - Respective **_ignitor_** is energized. V 2 72.3.7.1

Answer 22

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **9. Start Valves** * In-line green - **_Fully open_** * In-line amber - Abnormally **_fully open_** * Cross-line green - **_Fully closed_** * Cross-line amber - Abnormally **_fully closed_** V 2 72.3.7.1

Answer 23

ENG\_09 Discuss normal and abnormal indications on the ECAM ENGINE page. **10. Starter Air Pressure** * Normally displayed in **_green_**. * Displayed in amber with **_low pressure_**, or in case of **_overpressure_**. V 2 72.3.7.1

Answer 24

ENG\_10 Describe the **FADEC system, its power source, and protections** that it provides to the engines. * Each engine has an independent, self-powered, **_Full Authority Digital Engine Contro_**l (**_FADEC_**). * Each **_FADEC_** interfaces with numerous aircraft systems to control engine **_operation_** and **_performance_**. V2 72.2.2.1

Answer 25

ENG\_10 Describe the FADEC system, its power source, and protections that it provides to the engines. **Each FADEC has _two_ channels.** * Either **_channel_** is capable of operating the engine. * One channel is **_active_** and the other is in **_standby._** * If one channel fails, the other becomes active **_automatically_**. V2 72.2.2.1

Answer 26

ENG\_10 Describe the FADEC system, its power source, and protections that it provides to the engines. **Each FADEC has two channels.** * Each FADEC can be powered by its own dedicated **_alternator_** or by the aircraft’s **_electrical_** system. * During engine start, the FADEC’s **_alternator_** takes over automatically at a predetermined value of **_N2_**. * FADEC power reverts to aircraft electrical power if the FADEC’s **_alternator_** fails. * The FADECs are powered by the aircraft’s electrical system for [**_15_**] minutes after the respective **_ENG MASTER_** switch is selected OFF. * When a FADEC is not powered, amber **_XXs_** replace the engine parameters for that engine on the **_E/WD_** and **_ENGINE_** page. V2 72.2.2.1

Answer 27

ENG\_10 Describe the FADEC system, its power source, and protections that it provides to the engines. Each FADEC has two channels. Major functions that the FADECs perform include: • **_Fuel_** flow control • **_Ignition_** control • Protection from exceeding **_N1, N2, and EPR_** limits • Protection for starter **_engagement_** time and **_re-engagement_** speed * Computation of **_fuel_** used and **_thrust_** limits * Providing data for display on the **_E/WD_** and **_ENGINE_** page * Computation of thrust **_penalties_** for the use of air conditioning and ice protection * During automatic engine starts: o **_Start_** valve and **_HP fuel_** valve control o Identification of **_hung_** starts o Protection from **_exceeding_** EGT limits (on the ground only) o Control of start **_aborts and restart_** attempts (on the ground only) Note: No sensors are installed in the **_tailpipe_**; therefore, the FADECs cannot identify **_tailpipe fires_**. V2 72.2.2.4

Answer 28

ENG\_12 Describe the indications and differences between operating in **N1 rated versus unrated modes. (PW ONLY)** **_Rated_** * In rated N1 mode, **_thrust lever_** position and **_thrust limit_** indications transfer from the **_EPR_** indicator to the N1 indicator. * Also, the N1 MODE limit indications replace the **_EPR_** limit indications on the E/WD. V2 72.2.7.6

Answer 29

ENG\_12 Describe the indications and differences between operating in N1 rated versus unrated modes. (PW ONLY) **Unrated** Thrust lever position and N1 limit indications are **_not_** displayed in unrated mode. Also, the **_N1 MODE_** limit is not available and amber **_XX_**s are displayed below N1 MODE on the E/WD. V2 72.2.7.6

Answer 30

ENG\_14 Recall the requirements for a **reverser to deploy.** For a thrust reverser to deploy, all of the following conditions must be met: * At least one **_FADEC_** channel is operating. * At least one **_LGCIU_** senses that the aircraft is on the ground. * **_Reverse_** thrust is selected. * The respective engine is **_running_**. *Landing Gear Control Interface Unit* VOL II, 72.2.7.8