Fmnav Flashcards
If LNAV is armed prior to takeoff it will engage at ____ ft RA.
50
At acceleration height, VNAV commands a speed ____ kts below the existing flaps placard peed, based on flap handle position.
5
Selecting CLB DIR (Climb Direct) deletes all waypoint altitude constraints between the airplane altitude and ___.
the lower of the FMC cruise altitude or the MCP altitude
If an IRS switch is inadvertenly selected to OFF in flight:
the IRU’s can be fully restored within approximately 10 minutes if GPS data is available.
The ISFD receives Pitot and Static data form:
The Center Pitot/Static System.
Which of the following may be used by the FMC for position updating?
A. GPS/IRU
B. DME/DME IRS
C. LOC/IRU
Which statement is true, when operating with a triple FMC failure?
A. New waypoints must be entered using lat / long and are enterd on the ALTN NAV page sof the TCP.
B. ILS/GLS Radio turning is available through the ALTN NAV Radio page of the TCP
C. LNAV/VNAV is unoperative.
The EICAS shows “FMC”. Which of the following could cause this message to display?
All three FMC’s have failed.
Manual FMC position updates:
may be accomplished using any of the positions shown on POS REF 2/4
With regard to VNAV descents which of the following is true?
A. Selecting DES NOW prompt on the VNAV DES page will start a descent to capture the VNAV PTH.
B. Using the MCP altitude selector to initiate a descent when within 50 nm of the computed top of descent initiates a DES NOW function.
C. The CDU Help Window message DRAG REQUIRED displays if actual airspeed exceeds FMC computed targeet speed by more than 10 knots.
The FMC transtitions to approach if a published approach has been selected and incorporated into the active flight plan and which (any) of the following have occured?
A. The aircraft has sequenced the first waypoint of the active approach
B. the aircrat is on a direct-to, or an intercept course to the active waypoint, and the distance to go less than 12 nm.
C.The descent phase is active and the flaps are out of UP
While enroute and operating more than ___nm off the active route, the FMC doesnot sequence the active waypoint when the airplane passes the waypoint.
21
The IRS’s can be fully realigned in flight using which of the following methods?
Using GPS position information.
If all the IRU inertial data fails which of the following occurs?
A. The FMC continues to recieve hybrid GPS-inertial position solutions using AHRU inertial sensors combined with GPS position.
B, The AHRU’s continue to supply attitude data to the PFDs.
C. The EICAS advisory message NAV IRU is diplayed.
The FMC memory contains a navigation database. This database has information for which of the following?
A. NAVAID locations.
B. Airports
C. Waypoints.
The AHRU supplies:
A. Attitude
B. Heading
C. Rate information
The ISFD supplies backup attitude and heading information to the Captain PFD.
B. False
Placing the IRS switches to the OFF position will remove power from the IRU’s:
anytime they are powered
For FMC ILS/GLS autotuning to occur the airplane must be less than 50 NM from the top of descent, or less than 150 NM from the landing runway, or the FMC must be in the descent mode AND
A. an ILS/LOC/GLS runway must be in the active route.
B. a LOC back course approach must be in the active route.
Following a triple FMC failure, the ILS/GLS receivers can be tuned by utilizing the:
TCP ALTN NAV RADIO page.
After a dual FMC failure, FMS navigation is still available by utilizing route data furnished by:
the single remaining FMC, through the CDU’s
Climb and/or Descent waypoint need constraints entered on the legs page:
Require an altitude constraint at the same wapoint.
The normal pitch mode annunciated on the FMA during a VNAV climb is:
VNAV SPD.
A descent initiated more than 50 miles from the T/D using the MCP altitude selectorresults in:
A. A new cruise altitude.
B. A new T/D
C. A VNAV SPD descent to the new cruise altitude.
If unforecast tailwinds during a VNAV PTH descent cause the A/C to accelerate more than ___ kts above target speed to maintain the path, the FMA mode will change from VNAV PTH to VNAV SPD.
15
With a triple FMC failure which pages of the CDU will be inoperative?
All CDU pages are lost
During climb, if CLIMB DIRECT is selected, what happens to any intermediate climb restriction on the RTE LEGS page?
A. All intermediate altitude restrictions up to the MCP altitude will be deleted and the FMC will direct a climb to the altitude set on the MCP.
What speed does the FMC plan for during holding?
Clean minimum maneuver speed for current weight and altitude or Max Endurance speed, whichever is the higher.
How many GPS receivers does the B787 have?
Two: Left and Right.
How many FMCs does the B787 have, and how do they operate?
Three, one operates as the as the master and the others are designated as a spare and a backup.
The IRS switches on the overhead panel:
A. are functional in flight and on the ground.
C. Can be used to turn off the IRS’s at anytime.
The ADRS recievers air data inputs from:
A. All three pilot static systems through their respective air data modules.
B. IRS’s from the Captains pilot system and the AHRU from the First Officers pilot static system.
C. ADRS from the center pilot static system only and the ISFD from the right pitot static system only.
The ISFD provieds:
a backup attitude source and backup airspeed and altitude to the PFD.
The CDU’s provide what capability?
A. Information from the crew to the FMC and from the FMC to the crew.
If both IRS’s fail:
LNAV and VNAV are no longer available
The CDU Autotabbing feature is:
only available until the FMC Preflight is complete
During IRS alighnment, if GPS is available, manual entry of Present Position is required.
B. False
Any FMS selectable approach that has a published flight flight path angle may be flown using Integrated Approach Navigation feature.
A. True
What are the indications of an operational IRS losing normal power while on the ground?
A. A horn in the nosewheel area sounds
C. An illumiated “ON BAT” light.
If both IRS’s fail, ill the FMC’s continue to operate?
Yes, GPS provides track and position to the FMC
Vertical RNP valvues may be entered on the CDU ___ page.
RNP Progress Page (Progress 4/4)
To use the “Pick Waypoint” function, the ND must be in the ____ mode(s).
A. Map
B. Center Map
C. Plan
The “Pick Waypoint” function may be used to select any airport displayed on the ND display.
A. True
Pitch controls speed in VNAV SPD mode, and thrust controls speed in the VNAV PTH mode.
A. True
