Auto Flight Flashcards
What is meant by DUAL, INDEPENDENT, and SINGLE FMGS modes?
Dual: normal
Independent: each FMGC being controlled (crosstalk fails) by its associated MCDU.
Single FMGS: using one FMGC only.
You are in managed mach at high altitude, how do you change to selected speed?
SPD/MACH push-button, set SPD – PULL then press the p/b because it can’t be changed in the manage mode.
How is the metric altitude displayed? Exactly what information is displayed?
- METRIC ALT p/b
- Display the FCU altitude target in meters on the ECAM, or the correct altitude and FCU/FM altitude target in meters on the PFD.
What happens if you push the V/S knob?
Immediate level-off by engaging the v/s or FPA mode with a target of zero.
What information does the yaw bar give (ground roll guidance command bar)? And when is it displayed?
In green indicates the FD yaw orders, to maintain the aircraft on the TWY centreline, it displays when on the ground <30’ RA, provided that a LOC signal is available.
When is the autopilot first available for use?
Airborne for at least 5sec, pass 100’RA.
When can both autopilots be selected at the same time?
When the localizer/glideslope or rollout or go-around mode is armed or engaged.
Why should the autopilot NOT be switched off on the FCU?
The visual and audio warnings are continual.
The visual and audio warnings are continual.
What happens to the IAS bug if FD’s & AP’s are switched OFF?
ATHR reverts to selected SPEED mode except in APPR phase.
The descent profile should lead to what IAS at 1000’ above the runway?
Vapp
What is signified by the MANAGED SPD RANGE bug in a managed descent?
Defines acceptable speed variations around the nominal descent speed target. +20 or +5 (depends on constraints) speed target.
A managed descent in a holding pattern gives what ROD?
-1000’/min
What do the FMAs read if a lower attitude selected, and the ALT knob on the FCU is pulled?
Open descent
When will ALT CRZ appear on the FMA?
Level flight at the FCU selected altitude.
In a managed descent the heading knob is pulled: what will be displayed in the vertical column of the FMA? What happens to the constraints? And in a managed CLB?
- V/S
- Speed and altitude constraints are disregarded, but speed limit is retained.
Climbing to FL250 (on FCU): at FL225, FCU is now set to FL220. What happens? (Similar happens in descent).
A mode reversion occurs and v/s or FPA engages on current v/s or FPA.
What does SRS stand for and what does it do?
- Speed Reference System
- Controls pitch to steer the aircraft along a path in the vertical plan at a speed defined by the STS guidance law.
What is G/A TRK exactly?
Guides the aircraft along the current track at go-around initiation.
With the ATHR active, actual thrust will be limited to what?
Not greater than the thrust commanded by the position of the thrust lever.