E190 - Automatic flight Flashcards
The AFCS consists of:
The (AFCS) automatic flight control system:- FGCS (flight guidance control system)- TMS (thrust management system)
The GP (guidance panel) send information to the FGCS through… channels.
2 independent.
What happens if you press the BANK button ?
The bank angle is limited to 17 deg in HDG mode.
Is it possible to turn off the FD on the side used as source for the engaged AP ?
No.
Is it possible to turn off the FD on the coupled side, with the AP disengaged?
Yes. The FMA blanks and both FD’s disappear. The only FMA mode that remains is SPDt.
How many AP’s are installed ?
1 AP, dual channel.
What is the function of the TCS button ?
The touch control steering synchronizes the FD with the current airplane attitude. Afterwards the FD returns to it’s previous setting.
When is the A/T mode LIM displayed ?
When the target speed and the V/S are incompatible with the thrust rating available.
Can you have an amber AP indication ?
No, only a green of red (AP engaged/disengaged).
If the F/D is turned off, it automatically turns ON again in case of:
- Windshear detection- AP engagement- TO/GA button- Selecting any vertical/lateral modeIt is impossible to have the AP engaged without the FD on the coupled side.
When do the AP channels switch ?
- After each landing, or- In case of failure of the active channel1 channel can use EITHER FMA sources.
How many servos does the AP have for pitch, roll and rudder control ?
1 servo for each control direction.(1 additional rudder servo for autoland)
Does the AP disengage in case of:
- Windshear escape guidance active ?
- Stick shaker is activated ?- Manual pitch trim is activated ?
Yes, in all cases.
Does the AP disengage in case of:
- FBW reversion to DIRECT mode ?
- Aileron/elevator control system de-activated ?- A manual input is made on the controls ?- Internal monitor failure ?
Yes, in all cases.
The yaw damper will disengage if hydraulic systems … fail.
Systems 1 and 3.
For APPR mode, will the system give a warning if different minima’s are set on both PFD’s ? Will it give a warning if one selector is set to RA and the other one to BARO ?
It will only give an indication if one pilot has selected RA while the other pilot selected BARO. The RA indication will be amber.
What is the bank limit during localizer capture ?
35 deg of bank.
During T/O, ROLL mode will transition to TRACK mode when:
- IAS > 100 kts- For more than 10 sec, < 3° bank angle
During G/A, TRACK mode will be activated:
Upon pushing TO/GA.
What happens if you engage the AP while vertical TO mode is still active ?
TO mode is cancelled and FPA becomes the active mode.
What is the pitch logic for T/O ?What are the min/max speeds ?
The AP initially commands 8-18°, then:
V2 + 10 kts (2#)
V2 - V2 + 10 kts (1#)
Min speed:Vshaker + 10 kts (3 kts for 1#)Max speed:Vfe - 5kts
During FLCH, the active thrust mode is:
SPDe.
What happens if the airplane is climbing, and you select an altitude below the current altitude ?
The airplane starts descending.
The speed changes from M to IAS and visa versa:
Around 29,000 ft.
What is the pitch logic for GA ?What are the min/max speeds ?
The AP initially commands 8°, then:
Vref + 20 kts (2#)
Vac (1#)
Min speed:Vshaker + 10 kts (3 kts for 1#)Max speed:Vfe - 5kts
Ths WSHR pitch mode provides escape guidance in case of detection below … ft.
1,500 ft.
What are the indications of a windshear caution ?
Amber WSHR on PFD + “caution windshear “.(associated with increasing HW and updrafts)
What are the indications of a windshear warning ?
Red WSHR on PFD + “windshear, windshear, windshear”.(associated with increasing HW and updrafts)
Windshear guidance mode is activated when:
WSHR alert is present, and:
- FD mode in TO or GA, or- TO/GA is pressed, or
- T/L set to TO/GA
green WSHR becomes active pitch mode.
What is VARM mode ?
The initial VNAV mode until the appropiate vertical mode is determined.
VFLCH becomes active when:
- Manually selected during VPATH- Speed reversion from VPATH.
VGP can be armed within:
30 nm of the FAF (and a non-loc based app is selected)
VGP will engage when within:
5 nm from the FAF along track distance, OR,
within 30nm if using ACTIVATE VECTORS and the first waypoint is the FAF.
VPATH reverts to VFLCH when the programmed speed limit is exceeded with more than… kts, and the airplane levels off before continuing in VFLCH.
5 kts.
Speed protection. VPATH automatically transitions to VFLCH under the following conditions:
Speed restriction > 5ktsVmo / Mmo / gear or flap placard speed > 10 kts< Vref - 10 kts
APPR 2 means the airplane is:
Capable of performing a cat II-approach.
What are the requirements for APPR 2 or AUTOLAND 1 to engage:
- Both minima selectors set to RA- ILS frequency and course on both sides, and with correct frequency and course.
- Flaps 5 (latest at 800ft RA)
What happens at 800 ft RA during every ILS approach ?
The highest capability of ILS if frozen.
What happens at 1,500 ft RA during every ILS approach ?
APPR 1(2) / AUTOLAND 1 engages if possible.
Mach trim automatically engages when:
- AP is not engaged- Speed > M 0.70- No trimming is in progress
True or false: when FMS navigation is active and preview is enabled, the ILS frequency and course are automatically set if:
- auto tuning is enabled, and
- ILS or BC procedure is in the FP
True.
How many seconds of roll guidance can the auto land system perform ?
5 seconds, based on the LOC signals.
Is it possible to make an autoland without A/T ?
Yes.
How many AP channels are required to perform autoland ?
1 AP channel.
Are windshield wipers and the yaw damper required to perform an autoland ?
Yes.
During an autoland, at 150 ft:
ALIGN engages. RLOUT and RETD are armed.
During an autoland, at 50 ft:
FLARE engages. Automatic pitch trim is inhibited.
During an autoland, at main gear touchdown:
RLOUT and D-ROT engage. A/T disengages. After 5 sec, AP disengages.
Can you perform a 1# engine autoland in the same sequence ?
Yes. Although this is not allowed according to JAF procedures.
The A/T normally engages on the ground for T/O when it is armed, no failures exist, and:
T/Ls are > 50% TLA.
Is it possible to engage the A/T in-flight at 200 ft AGL ?
No, in-flight it is only possible to engage the A/T > 400 ft AGL
The A/T, in normal operation, disengages:
- When T/L is moved beyond TO/GA
- After touchdown (auto land)- Thrust reverse operation (during RTO)AT flashes green for 5 sec + “throttle” aural alert
The A/T, in non-normal operation, disengages:
- TLA difference > 8 deg- A/T failureAT flashes red + “auto throttle” aural alert
During T/O, TO transitions to HOLD at:
60 kts. A/T servo’s are de-energized until 400ft AGL.
The vertical modes related to SPDe are:
- FLCH- VFLCH- OVSP
If the A/T is overridden, the indication .. appears as thrust mode.
OVRD.
What happens with the A/T in case of an engine failure ?
The A/T deactivates the respective TL. The operative engine TL remains active for A/T operation.
With F/D on, the CLB thrust mode becomes active after T/O when (2#):
- > 400 ft AGL, and- Landing gear up, and- Another vertical mode is selected.
With F/D off, the CLB thrust mode becomes active after T/O when (2#):
- > 3,000 ft AGL, and- Landing gear up.
The CRZ thrust mode is active when:
- Airplane is at selected level > 90 sec, and- Airspeed < 5 kts (or M 0,01) of selected airspeed
The GA thrust mode is active when:
Landing gear down.
The CON thrust mode is active after T/O when:
- After engine failure, and- > 3,000 ft AGL.
The CON thrust mode is active in-flight (not T/O) when:
After engine failure.
What is the meaning of the EICAS msg: SHAKER ANTICIPATED ?
Indicates that shaker activation angles have been advanced to conservative settings.
The ROLL mode will level the wings when bank angle is < … °. Above this value, the roll mode will maintain the bank angle up to a maximum of… °.
6 °35 °.
In order to perform an autoland on a cat I approach, all requirements for an autoland must be fulfilled and the minima selectors:
set to RA.
The A/T offers low speed protectionof:
< 20,000 ft: 1,2 VS
between: interpolation
> 30,000 ft: 2% LSA.
Overspeed protection is given by which modes:
- OVSP pitch mode ( < Vmo/Mmo limits)- VPATH reversal.
