Automatic Flight / MCP - Question Bank Flashcards
How do you re-engage the autothrottles when the pitch mode is VNAV ____ or FLCH SPD, when the A/T flight mode annunciation is blank?
Cycle the A/T ARM switch to OFF then back to ARM
How do you re-engage the autothrottles when the pitch mode is ALT, V/S or G/S?
Push the SPD switch
How could you select climb thrust after takeoff or go-around with all engines running?
Push the THR (thrust) switch
What speed is set in the IAS/Mach window and PFD when power is first applied to the airplane?
200 kts
The outer BANK LIMIT Selector applies to which roll mode?
HDG SEL
When the Localizer (LOC) is captured, what is displayed in the Heading (HDG) Window?
The ILS front course
How can you de-select the approach mode AFTER localizer and glide-slope captured?
- Select TO/GA
* Disengage autopilot and position both F/D switches off.
With the Approach (APP) Switch pushed, at what intercept track angle does the AFDS capture the Localizer?
120 degrees of the localizer course
At what altitude are the autopilot systems powered by separate sources with three autopilots engaged?
Below 1,500 feet radio altitude
Can the glideslope be captured prior to Localizer intercept?
No, glideslope capture is inhibited until localizer capture and the intercept angle is within 80 degrees of the localizer course.
What does an amber horizontal line displayed through the affected ACTIVE pitch or roll mode indicate?
A flight mode fault is detected
How many pushes of the autopilot disengage switches on the control column would you make to disengage all autopilots?
• Two pushes
• First push disengages, second push resets the master warning lights,
EICAS warning message, and aural warning.
When TO/GA is pushed for go-around on approach, what autothrottle mode would be displayed on the flight mode annunciation, if the A/T is armed?
THR mode
What climb rate is achieved during a go-around with TO/GA pushed?
2,000 feet per minute of climb.
What autothrottle mode is activated with the second push of the TO/GA switch?
THR REF, at full go-around thrust
What AFDS status annunciation displays above the attitude display on the PFD when the autopilot is engaged?
CMD
When does VNAV activate?
VNAV activates at 400 feet above runway elevation.
When is VNAV deactivated?
- When selecting TO/GA, FLCH SPD, V/S, ALT, or G/S pitch mode.
- Dual FMC failure.
- Disengaging autopilot and selecting both FD’s off.
What Autothrottle flight mode annunciations would you have when using FLCH SPD in a descent, to include subsequent altitude capture?
- THR, followed by HOLD.
* A/T mode changes to SPD when altitude captured.
When power is first applied to the airplane, what altitude is displayed in the MCP altitude window and PFD?
10,000 feet
How are autothrottle, roll, or pitch mode changes emphasized on the FMAs?
Green box around the mode for 10 seconds.
Will the autothrottles operate if you don’t push TO/GA for takeoff by 50 knots? If not, when will they operate in that case?
- No
* Reaching 400 feet. (autothrottles inhibited until 400 feet)
How can you disarm VNAV, LNAV, LOC, and APP modes when armed?
Push the mode switch a second time
Which PFD annunciation is associated with a fail operational automatic landing, and which one is associated with a fail passive automatic landing?
- LAND 3 for fail operational
* LAND 2 for fail passive
Which pitch mode does not provide autothrottle speed protection?
V/S (Vertical Speed)
When does LNAV activate when armed?
- Above 50 feet and in position to turn onto the active route leg.
- In flight, when within 2 ½ miles of the active leg.
When does the ROLLOUT mode activate?
Below 5 feet
What controls are used by the AFDS to steer the airplane on the localizer centerline after touchdown?
Rudder and nosewheel steering
What initial pitch attitude is commanded by the flight director when the flight director is turned on, while on the ground?
8 degrees nose up
In flight, when is TO/GA armed?
- Flaps out of up, or
* Glideslope captured
If a VNAV descent is initiated prior to top of descent (T/D), what is the pitch mode?
VNAV SPD
Describe the condition that would cause VNAV ALT to display as the pitch mode.
A conflict occurs between the VNAV profile and MCP altitude.
When does the FLARE mode activate during autoland?
Between 60 and 40 feet RA.
When do the autopilots start the flare maneuver?
Approximately 50 feet radio altitude
When do the autothrottles retard to idle during autoland?
At 25 feet radio altitude
When does the FLARE annunciation no longer display?
- At touchdown
* Nosewheel smoothly lowers to the runway.
During autoland, what action disconnects the autothrottles?
A reverse thrust lever is raised to reverse idle.
What conditions would cause the autothrottles to disconnect and subsequently cannot be re-connected?
- Both FMCs fail
* Two or more engines are shut down.
Can the autothrottles be reactivated if the FMC Master switch is switched?
Yes
During takeoff, when TO/GA is selected, what autothrottle mode is active?
THR REF
When does the autothrottle annunciation change to HOLD during takeoff?
65 kts
When is barometric altitude recorded by the FMC during takeoff?
100 kts
At liftoff, with TO/GA as the roll mode, what roll command is maintained?
Ground track
If an engine failure occurs on the ground, what is the pitch command target Speed at liftoff?
V2, or airspeed at liftoff, whichever is greater.
At acceleration height, what speed commands are established by pitch as the flaps are retracted?
5 knots below the placard speed of the commanded flap position.
When is TO/GA mode terminated after takeoff?
- By selecting any other pitch and roll mode, or
* By activation of LNAV/VNAV modes.
When does the autopilot control the rudder during multi A/P approaches?
When LAND 2 or LAND 3 annunciated.
At what two altitudes will runway alignment occur during multi A/P approaches during crosswinds, with all engines?
500 feet and 200 feet, depending on crab angle.
How does the A/P maintain runway alignment if an engine failure occurs prior to the approach, during multi A/P approaches? If during approach?
- AFDS introduces a sideslip at 1300 AGL.
- Establishes a wings level configuration.
- If an engine fails during the approach, wings level is established when the engine failure is detected.
What pitch is commanded by the AFDS when TO/GA is pushed in a windshear recovery on approach?
15 degrees pitch-up or slightly below the pitch limit, whichever is lower.
How does the automatic flight control system provide stall protection?
Prevents speed reduction below the minimum maneuvering speed.
Describe flight envelope speed protection.
- Overspeed protection prevents exceeding the maximum operating,
- Gear extended, or
- Flap placard speeds.
What speed protection margin is used by the AFDS in max operating, flap placard speed, and gear extended speeds?
5 kts
What two conditions prevent the AFDS and autothrottle from providing speed protection?
- V/S pitch mode
* Engine failure above maximum engine-out altitude.
