Term
| What is the function of the ALIGN position of the IRU Mode Selector? |
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Definition
Initiates alignment
Removes sensor errors when selected from NAV mode |
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Term
When is full alignment of the IRS required?
How long does it take? |
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Definition
When the time from the last full alignment to the next expected arrival time exceeds 18 hours
10 minutes |
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Term
| How do you accomplish a fast alignment of the IRS? |
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Definition
Airplane must be parked
Position the selectors to ALIGN
Enter present position
Reposition the selectors to NAV
Takes 30 seconds
Fast alignment can be accomplished without entering present position. However, greater navigational accuracy is attained by entering present position |
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Term
| What does the IRS ON Battery (BAT) Light mean, when displayed on the Overhead Maintenance Panel? |
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Definition
The navigation mode is inoperative for the remainder of the flight
Attitude information can be obtained by moving the selector to ATT |
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Term
| How are the IRSs affected in the event of a loss of AC power? |
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Definition
Powered by DC backup power via the APU Hot Battery Bus
Center only runs for 5 minutes |
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Term
| How many FMS’s and how many FMCs are there? |
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Definition
One FMS (flight management system)
Two FMCs (flight management computers L and R) |
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Term
| What determines present position of the airplane, and where on the ND is it displayed? |
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Definition
FMC
Tip of the white triangle |
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Term
| How is FMC position updated? |
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Definition
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Term
| What does a “VD” FMC radio position update status indicate and where is it displayed? |
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Definition
VOR and its collocated DME
Lower right hand corner of the ND, in green |
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Term
| What is lost during alternate navigation? |
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Definition
| LNAV, VNAV, autothrottles |
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Term
| What CDU pages are available during Alternate Navigation? |
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Definition
ALTERNATE NAVIGATION
LEGS, PROGRESS, RADIO |
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Term
| Which waypoints are referenced and displayed in magnetic and which are displayed in true on the alternate navigation LEGS pages? |
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Definition
Only the active waypoint is referenced to magnetic north.
All subsequent waypoint courses are true courses. |
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Term
| When does the heading reference change to true north? |
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Definition
At 82N (or north of 70N between 80W and 130W)
At 82S (or south of 60 S between 120E and 160 E) |
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Term
| When would you ever select the “TRUE” position on the Heading Reference switch? |
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Definition
| For autopilot operations in high latitudes using a roll mode other than LNAV |
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Term
| When does the FMS enter polar operation conditions? |
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Definition
| When the FMC calculated airplane position passes north of 84 north or south of 84 south (FMCs revert to split IRS) |
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Term
| When do the ILS receivers tune and the frequency and course display after you select an ILS while inbound to the landing airport? |
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Definition
When the airplane is within 150 nm of the destination airport
When within 50 nm of T/D
When in FMC descent |
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Term
| When do the ILS frequency and course and the word PARK display on the NAV/RAD page when en‐route to the destination? |
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Definition
Less than 200 NM from the T/D, or
More than halfway to the destination
Upon manual tuning |
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Term
| When will the FMC fail to sequence the active waypoint? |
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Definition
| When more than 21 nm off the active route and not on an offset route |
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Term
| What is a conditional waypoint? |
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Definition
A conditional waypoint is based on a time or altitude requirement, and not based on a land reference.
Indicate when an event occurs, and not a geographically fixed position, ie., “when reaching 4,000 feet.” |
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Term
| What VNAV climb profiles are used by VNAV and displayed in the pitch mode FMA during climb? |
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Definition
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Term
| What VNAV climb mode would display on the FMA during departure waypoint constraints? |
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Definition
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Term
| If the FMC cruise altitude is FL 250 and the clearance altitude, FL 190 is set in the MCP, what pitch mode FMA will display when FL 190 is captured? |
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Definition
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Term
| What is the end of descent point (E/D) for VOR approaches? |
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Definition
| The missed approach point, which may be the VOR, runway waypoint, or a named waypoint |
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Term
| What is the end of descent point (E/D) for all approaches other than VOR approaches? |
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Definition
| 50 feet above the runway threshold |
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Term
| If you are flying an approach with the FMC in “on approach” logic, and the airplane rises more than 150 feet above the path, the FMA pitch mode will change from VNAV PTH to what pitch mode display? |
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Definition
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Term
| When you execute the missed approach, what altitude becomes the new cruise altitude? |
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Definition
| The highest altitude in the missed approach procedure |
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Term
| What thrust mode would you see on upper EICAS following an engine failure at V1 and the airplane has accelerated to VREF 98 knots, flaps retracted? |
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Definition
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Term
| What could happen if you advance the thrust levers further during a T0 1 or TO 2 fixed derate, following an engine failure? |
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Definition
| Loss of directional control |
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Term
| Can you manually apply more thrust, when conditions are necessary, during an assumed temperature thrust reduction takeoff? |
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Definition
| Yes, because the assumed temperature thrust setting is not considered a limitation |
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Term
| During climb, at what altitude does CLB 1 or CLB 2 derated thrust begin to increase linearly and at what altitude would CLB thrust be achieved? |
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Definition
10,000' - derated thrust begins to increase
15,000' - CLB thrust is achieved |
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Term
| What fuel value is usually used by the FMC for performance calculations? |
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Definition
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Term
| What is meant by the DRAG/Fuel Flow (FF) values in line 3L of the CDU Identification page? |
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Definition
| Drag and fuel flow correction factors |
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Term
| What is the maximum thrust reduction limit in terms of percentage when using assumed temperature? |
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Definition
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Term
| How would the FMC handle a manually entered V1 speed less than V1MIN? |
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Definition
| The FMC would display “VIMIN” in the header line and the value of V1MIN in the data line. |
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Term
| Can the FMC display engine out performance limitations based on two engines out? |
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Definition
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Term
| On what page of the CDU could you enter the altitude or fight level where anti‐ice is to be first turned on during the descent? |
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Definition
| The Descent Forecast Page |
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Term
| On what page of the CDU could you find runway length for the selected Runway? Airport elevation? |
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Definition
Runway length - Approach Reference page
Airport elevation - Reference Navigation Data page |
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Term
| What teardrop offset angle is used by the “Holding” page? |
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Definition
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Term
| What is commanded by pushing the MCP Altitude Selector switch? |
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Definition
Initiates an “early descent” when within 50 NM of the top of descent point. VNAV starts an early descent and captures the idle descent path. VNAV SPD displays on the FMA pitch mode.
Initiates a cruise descent when more than 50 nm from top of descent point. VNAV begins a cruise descent to the new cruise altitude, and may not capture the idle descent path.
Initiates a climb or descent toward the altitude set in the MCP altitude window, when in VNAV PTH or VNAV ALT pitch mode.
During climb or descent with altitude constraints, each push deletes the next waypoint constraint.
During climb with no altitude constraints, and the altitude window set above the FMC cruise altitude, changes cruise altitude to the altitude window value. |
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Term
How long is ILS autotuning inhibited after takeoff?
How could you autotune a new approach during the inhibit? |
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Definition
10 minutes (prevents clutter on the PFD)
Select and execute a new approach in the active flight plan |
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