B777 Flight Instruments, Displays

The correct answer is "To override a checklist you must display that checklist and then use the CHKL OVRD key." This statement explains the correct procedure for overriding a checklist. It states that in order to override a checklist, you need to first display the checklist and then use the CHKL OVRD key. This implies that there is a specific process to follow in order to successfully override a checklist.

The ADIRU (Air Data Inertial Reference Unit) is a system in an aircraft that provides data regarding the aircraft's position, attitude, and airspeed. It receives information from various sources to calculate this data. The correct answer states that the data sources for the ADIRU include air data modules, AOA (Angle of Attack) sensors, and TAT (Total Air Temperature) probe. Air data modules provide information about the aircraft's air pressure, temperature, and airspeed. AOA sensors measure the angle between the aircraft's longitudinal axis and the oncoming airflow. The TAT probe measures the total air temperature. Therefore, these three sources provide crucial data for the ADIRU to accurately determine the aircraft's position and attitude.

To display the flight control synoptic on the right inboard display unit, the correct steps are to first select the R INBD switch and then select the FCTL switch. This sequence of selections will activate the necessary settings and configurations to show the flight control synoptic on the specified display unit.

When the Weather Radar (WXR) switch or ND Traffic (TFC) switch is activated, range marks will display in expanded VOR or APP mode. These switches are responsible for enabling the display of range marks on the Navigation Display (ND). The range marks provide information about the distance from the aircraft to various points of interest, such as VOR stations or approach waypoints. Therefore, activating the WXR or TFC switch allows pilots to have a better understanding of their position relative to these points on the ND.

The pitch limit indication is displayed when the flaps are not in the up position or when the flaps are up but the aircraft is flying at slow speeds. This indication helps the pilot to maintain the appropriate pitch angle of the aircraft during these conditions. It is important to be aware of the pitch limit to prevent stalling or overloading the aircraft.

The POS map switch displays the ADIRU, GPS, and raw VOR position data. This means that it shows the information related to the aircraft's position as determined by the ADIRU system, the GPS system, and the raw VOR data. This can be useful for pilots to have a clear visualization of their current position and to navigate accurately during a flight.

To select the status page on the left inboard display unit using the Display Select Panel, the correct steps are to first select the L INBD switch and then select the STAT switch. This combination of switches will allow the user to access the desired status page on the left inboard display unit.

If the ADIRU switch is left on and the primary power is removed from the airplane, and then the BATTERY switch is turned off, the ON BAT light will illuminate and the ground crew call horn will sound. This indicates that the ADIRU system is still receiving power from the battery even though the primary power has been removed.

The maximum range at which turbulence returns can be displayed is 40 nm. This means that the display can show turbulence returns up to a distance of 40 nautical miles.

When manually realigning the ADIRU (Air Data Inertial Reference Unit), the ADIRU switch should remain off for a duration of 30 seconds. This period allows the ADIRU to reset and recalibrate its internal systems before being turned back on. By momentarily switching off the ADIRU for this specific time frame, it ensures that the unit is given enough time to complete the realignment process effectively.

To display an unannunciated non-normal checklist, you need to highlight and select the NON - NORMAL MENU key, and then select the UNANNUNCIATED CHECKLISTS key. This sequence of actions will bring up the non-normal menu and allow you to access the unannunciated checklists.

The pitch limit indicator indicates the stick shaker activation point for the existing flight conditions. The stick shaker is a device that vibrates the control stick to warn the pilot of an impending stall. The pitch limit indicator helps the pilot to know the maximum pitch angle at which the stick shaker will activate, ensuring that the aircraft does not exceed its safe angle of attack and avoids a stall.

The correct answer indicates that the barometric settings of both the captain and the first officer do not agree with each other. This can cause confusion and potential errors in altitude readings and instrument indications. It is important for both pilots to have the same barometric setting to ensure accurate altitude measurements and proper aircraft performance.

When the ADIRU (Air Data Inertial Reference Unit) is in the alignment mode, the EICAS (Engine Indicating and Crew Alerting System) displays a memo message that says "ADIRU ALIGN MODE". This message indicates that the ADIRU is currently aligning itself and is not yet ready for navigation. It serves as a reminder to the crew that they should wait until the alignment process is complete before relying on the ADIRU for accurate navigation information.

The correct answer is that all checklists can be reset at once by using the RESETS key followed by the RESET ALL key. This means that instead of resetting each checklist individually, the RESETS key allows for a simultaneous reset of all checklists, and the RESET ALL key confirms and completes the reset process.

The correct answer is that the Integrated Standby Flight Display (ISFD) displays airplane attitude, airspeed, altitude, heading, and ILS information. This means that the ISFD provides a comprehensive display of crucial flight information, including the aircraft's pitch, roll, and yaw (attitude), its speed through the air (airspeed), its height above sea level (altitude), its direction of travel (heading), and information related to the Instrument Landing System (ILS), which helps guide the aircraft during approaches and landings.

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The landing altitude flag (LDG ALT) is removed during preflight after the original airfield is entered on the CDU route page. This indicates that the aircraft's navigation system has been programmed with the correct destination and altitude information. The LDG ALT flag is likely removed at this point to ensure that the correct landing altitude is displayed and used for the remainder of the flight.

The correct answer is STAT (status page). The status page on the display select panel is responsible for displaying various system parameters and statuses, including the APU EGT (exhaust gas temperature). This page provides essential information about the aircraft's systems, allowing the pilot to monitor the APU and other critical components during flight.

When the ALT SOURCE selector is in the ALTN position, the altitude source for transponder altitude reporting is SAARU.

The VOR data on the NAV RADIO page is displayed in green.

MAP centered mode can display weather radar returns. This mode provides a map display with the aircraft's position at the center. It allows the pilot to view various information such as terrain, airways, waypoints, and weather radar returns. Therefore, MAP centered mode is the correct choice for displaying weather radar returns.

The ADIRU receives the same data inputs as the SAARU but compares and validates the data independently. This means that both systems receive the same data, but the ADIRU performs its own analysis and validation of the data. This redundancy helps ensure the accuracy and reliability of the information provided by the ADIRU.

LNAV automatically engages when the aircraft reaches or exceeds an altitude of 50 feet and is within a lateral distance of 2.5 NM from the active route leg. This means that once the aircraft meets these criteria, LNAV will engage and the aircraft will follow the active route leg.

The rectangular white icon next to an EICAS message indicates that there is an electronic checklist with procedural steps, notes, or other information that is not complete. This suggests that there are still actions or steps that need to be taken to resolve the non-normal condition indicated by the EICAS message.

The SAARU (Standby Attitude and Air Data Reference Unit) requires data from various sources to function properly. These sources include air data modules, AOA (Angle of Attack) sensors, and TAT (Total Air Temperature) probe. These components provide essential information such as airspeed, altitude, angle of attack, and temperature to the SAARU, allowing it to accurately calculate and display attitude and air data information to the pilot. Therefore, the correct answer is air data modules, AOA sensors, and TAT probe.

The EICAS message "SGL SOURCE ILS" indicates that both the Primary Flight Displays (PFDs) and Navigation Displays (NDs) are using the same source of Instrument Landing System (ILS) information. This means that the ILS receiver is tuned to a single frequency, and the flight instruments are receiving the same data for ILS guidance. This ensures consistency and accuracy in the ILS information displayed on both the PFDs and NDs.

The ADF frequency data on the NAV RADIO page is displayed in cyan.

The airplane symbol in ND Plan mode represents the actual position and track along the flight plan route. It shows the real-time location of the aircraft and the direction it is heading, allowing pilots to accurately monitor their progress along the planned route.

The correct answer is the second option, "The NOTES key displays the operational note shown in non-normal checklists." This means that when the NOTES key is pressed, it will show the operational note that is relevant to the non-normal checklist being displayed. This feature allows the pilot or operator to easily access and review any important notes or instructions related to the checklist, ensuring that necessary actions are taken during flight.

When the CHKL OVRD key is selected, it overrides the currently displayed checklist and shows the next checklist that needs to be overridden. This means that it allows the user to skip the current checklist and move on to the next one that requires attention or action.

The FMC (Flight Management Computer) will not automatically sequence the active waypoint in flight when the aircraft is more than 21 NM (nautical miles) off the active route and not on an offset. In other words, if the aircraft deviates significantly from the planned route and is not following any offset procedures, the FMC will not automatically advance to the next waypoint. This is likely to prevent the aircraft from continuing on an incorrect path and to ensure the pilots are aware of the deviation and can take appropriate action.

When the CDU (Control Display Unit) is selected on the instrument Source selector, it does not cause the EICAS (Engine Indicating and Crew Alerting System) message FMC (Flight Management Computer) to be displayed. The CDU is a separate unit used for inputting data into the FMC, but it does not directly trigger the display of the FMC message on the EICAS.

When the ALT SOURCE selector is in the NORM position, the altitude source for transponder altitude reporting is the ADIRU (Air Data Inertial Reference Unit). The ADIRU is responsible for providing accurate and reliable altitude information to the transponder, which then broadcasts this information to air traffic control and other aircraft.

The EICAS Message DISPLAY SELECT PNL indicates that either the left, center, or right CDU control of the Display Control Panel is active. This means that one of the CDUs is currently being used to control the Display Control Panel, allowing for the selection and management of various display units.

The correct answer is ALTN NAV LEGS. In the event of dual FCM (Flight Control Module) failure, the ALTN NAV LEGS page would still be available. This page is used for selecting and managing alternate navigation legs, which would be crucial in such a situation to ensure the aircraft can navigate safely to an alternate destination. The other options, ALTN PERF INIT, ALTN REF NAV DATA, and ALTN POS REF, are not directly related to navigation and would likely not be available in the event of FCM failure.

The annunciations CDU L, C, or R are displayed on the ND when the respective navigation source switch in the CDU is selected. This means that when the pilot selects the left navigation source switch on the CDU, the CDU L annunciation will be displayed on the ND. Similarly, selecting the center or right navigation source switch will display the CDU C or R annunciations on the ND respectively.

With dual FMC failure, the VNAV (Vertical Navigation) function becomes inoperative. The FMC is responsible for calculating and controlling the aircraft's vertical navigation, including altitude and vertical speed. Without functioning FMCs, the aircraft is unable to accurately manage vertical navigation, making the VNAV inoperative. LNAV (Lateral Navigation) and MAP display are not directly dependent on the FMCs and may still be operational. The CDUs (Control Display Units) are input devices for the FMCs and would also be inoperative without functioning FMCs.

After an electrical power interruption, when the FCM restarts, the active waypoint must be entered on LEGS page 1, line 1, and the desired course to that waypoint must also be selected before LNAV can be activated. This is necessary to ensure that the aircraft follows the correct route and course after the power interruption.

An excessive Localizer deviation alert occurs when the aircraft deviates significantly from the intended course during an ILS approach. This alert is triggered by various conditions, such as low radio altitude, autopilot or Flight Director engagement, and LOC roll mode engagement. However, selecting an incorrect ILS frequency and course does not directly contribute to the occurrence of this alert.

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In the Plan mode, the display orientation on the ND (Navigation Display) is such that the top of the display represents True North. This means that the map on the ND is aligned with the Earth's geographic north pole. This orientation helps pilots accurately determine their position and navigate along their planned route.

A complete ADIRU alignment is recommended whenever the total time in the navigation mode is expected to exceed 24 hours. This means that after 24 hours of continuous navigation mode operation, it is recommended to perform a complete ADIRU alignment to ensure accurate and reliable navigation data. This alignment helps maintain the accuracy and integrity of the aircraft's navigation system over extended periods of operation.

The active navigation database can only be changed on the ground. This means that it cannot be changed during flight or any other time while the aircraft is in the air. The database can only be modified before the flight, during the preflight phase.

The color magenta in weather radar returns represents turbulence within precipitation. This means that areas with magenta on a weather radar indicate regions where there is turbulence occurring within areas of precipitation.

The correct answer is ACT RTE X, page 2 and beyond. This is because the FMC page 2 and beyond is where the user can enter airways. The other options do not allow for entry of airways.

When a new CG value is entered on the TAKEOFF REF page, the FMC scratchpad message "TAKE OFF SPEEDS DELETED" does not display. This means that changing the CG value does not affect the takeoff speeds calculation, and therefore the message is not necessary.

Range arcs are displayed in the expanded VOR mode if weather radar or TCAS is selected. This means that when the pilot chooses to view the weather radar or TCAS information on the display, the range arcs will be shown as well. The range arcs provide information about the distance from the aircraft to certain points, such as 10, 20, and 40 mile ranges. Therefore, if the pilot wants to see the range arcs, they need to select either weather radar or TCAS.

The correct answer is "Whenever the HDG REF switch is selected to the TRUE position." This means that the TRUE light will illuminate only when the HDG REF switch is specifically set to the TRUE position. It will not illuminate when true heading is in use, when the aircraft is in high latitudes or near the magnetic poles, or when the ND is in the map mode. The TRUE light will only come on when the pilot intentionally selects the TRUE position on the HDG REF switch.

When the inboard display selector is in the EICAS position, all display switches on the Display Select Panel become inoperative except for ENG, FUEL, and AIR. This means that only the engine, fuel, and air-related information will be displayed on the inboard display unit. Other display select panel selections will not have any effect on the inboard display.