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E190 - System knowledge > E190 - Flight controls > Flashcards

E190 - Flight controls Flashcards

1
Q

How many ACE’s are installed ?

A

Nine3 P-ACE’s, 2 SF-ACE’s, 1 HS-ACE and 3 S-ACE’s.

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2
Q

Which FCM’s control the MFS ?

A

FCM 1, 3 and 4.

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3
Q

What is the function of the FCM unit ?

A

They provide software based assistance to theP-ACE, and they are required for normal operation of the flight control system.

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4
Q

Where are the FCM’s located ?

A

FCM 1 and 2 in MAU 1 .FCM 3 and 4 in MAU 3.

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5
Q

What is the primary cause of direct mode operation ?

A

Loss of data from all FCM (fe. no airspeed input) OR multiple ACE failures.

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6
Q

What happens if both the CPT and F/O use the pitch trim at the same time ?

A

Cpt’s trim switch has priority.

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7
Q

What happens with the stabilizer if you press the AP/trim disconnect button ?

A

It disables both HS-ACE channels.

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8
Q

What are the flap positions (in degrees) ?

A

F1 - 15° - 7°F2- 15° - 10°F3- 15° - 20°F4- 25° - 20° (gated)F5- 25° - 20°FULL- 25° - 37°

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9
Q

What happens if you push the TRIM SYS 1(2) CUTOUT switch ?

A

It disables HS-ACE channel 1/2.

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10
Q

Manual pilot trim commands are always limited to:

A

3 sec.

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11
Q

What are the possible indication values for a flaps/slats jam ?

A

Slats: 0 - 3 - FULLFLAPS: 0 - 1 - 2 - 4 - FULL

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12
Q

In case of a S/F jam the … value is always indicated.

A

Lower.

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13
Q

The 3 S-ACE’s are incorporated in:Each S-ACE controls:

A

FCM 1, 3 and 4One pair of MF-spoilers.

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14
Q

The FCM units communicate with the P-ACE’s through the:

A

CAN BUS.

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15
Q

The FCM units communicate with each other and other avionics through the:

A

ASCB.

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16
Q

If you switch to DIRECT mode:

A

The normal channel of the P-ACE switches to the direct mode of the standby P-ACE.

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17
Q

The PBIT consists of a:The PBIT expires after:

A

Hydraulic and electric PBIT50 hrs.

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18
Q

The electrical PBIT automatically starts when the airplane is powered by … and takes about … minutes to complete.It will be interrupted if:

A

Any AC source3min- Any ACMP is turned on, or- AC power is interrupted, or- FCP switches are cycled

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19
Q

The hydraulic PBIT automatically starts when … and takes about … minutes to complete. ItIt will be interrupted if:It will not be performed if:

A

All hydraulic systems are pressurized1 minuteAny flight control surface is movedHydraulic temp < 10°, unless the PBIT is expired.

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20
Q

If the hydraulic PBIT is interrupted:

A

All three hydraulic systems must be depressurised and then again pressurized.

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21
Q

In case of complete failure of the normal and emergency electrical system, the FBW system:

A

has a back-up battery that powers the flight controls for a minimum of 15 min. This battery is charged by DC ESS BUS 3.

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22
Q

Odd-even day change rule:

A

For the rudder, aileron and stabilizer, that always have two channels this rule is used to change the active channel depending on the date.Odd days: upper rudder, RH elevator actuators.

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23
Q

Except for the odd-even rule, the active elevator actuators are also swapped:

A

Every time the elevator system is powered up.

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24
Q

True or false ? In case of a hydraulic failure, the standby PCUs for the elevator become active (other hydraulic systems).

A

True.

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25
Q

What happens if you have a jammed elevator actuator ?

A

The elevator remains fixed, the other elevator is still available.

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26
Q

True or false. If you switch the elevator control to DIRECT mode, only the (new) active P-ACE channels are set to DIRECT mode.

A

False. All P-ACE’s are operated in DIRECT mode.

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27
Q

What is elevator thrust compensation (ETC) ?

A

The FCMs command max 5° of elevator input to correct of increasing/decreasing thrust.

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28
Q

What is ETC off-load ?

A

The ETC elevator offset is off-loaded to the stabilizer.

29
Q

The TSA for T/O is enabled < … ft HAGL. This is estimated by means of the … The maximum pitch down correction is … °.

A

20 ft HAGLvertical speed8°.

30
Q

The TSA for landing is enabled < … ft HAGL. This is measured by means of the … The maximum pitch down correction is … °.

A

70 ft HAGLradio altimeters8°.

31
Q

Is TSA for landing enabled for F1-F4 ?

A

No. Only for F5 - FULL.

32
Q

Does the AOA limiter has priority over TSA ?

A

Yes.

33
Q

Does TSA offer full protection against tail-strikes ?

A

No

34
Q

How many independent feel units are installed on the elevator control ? Is feel still available in case of column separation ?

A

Two.Yes, although elevator feel is halved.

35
Q

Is it possible to re-engage elevator disconnection (by actuating the disconnect mechanism) ?

A

No.

36
Q

The HSA is driven by two…. that are powered by the HS-ACE through two … in a … / … configuration.

A

AC motorschannelsactive / standby.

37
Q

The HS-ACE can receive signals from:

A
  • Trim switches- Backup trim switches- FCM
38
Q

What happens if only one of the two trim switches on the control wheel give a signal for > 7 sec ?

A

The trim switch is disabled.

39
Q

True or false: In case of stick shaker activation, the HS-ACE is prevented from responding to any pitch trim command by a stick shaker signal from the AFCS.

A

True.

40
Q

What is the priority logic for the HS-ACE ?

A

Backup switchesCPTF/OFCM (autopilot) trim

41
Q

The autopilot trim works through the:

A

FCM.

42
Q

Is it possible to engage the AP if autopilot trim is inop ?

A

No.

43
Q

In an electrical emergency, the HS-ACE:

A

Works at a low speed (both manual and autopilot trim) , and only through HS-ACE channel 2.

44
Q

The elevators are hydraulically powered by:

A

Systems 1 - 2 - 2 - 3 (from L to R actuators).

45
Q

The ailerons are hydraulically powered by:

A

System 3 - outboard actuatorsSystem 2 - inboard actuators

46
Q

If the L aileron (CPT side) is jammed (what happens with artificial feel ? Roll trim ? MFS ?):

A

R aileron remains available, artificial feel and roll trim are lost, MFS #4 still available.

47
Q

If the R aileron (F/O side) is jammed (what happens with artificial feel ? Roll trim ? MFS ?):

A

L aileron remains available, artificial feel and roll trim remain available, MFS #5 still available.

48
Q

What happens in case of a disconnected aileron PCU ?

A

The aileron is still available, but force authority is halved.

49
Q

True or false ? In normal mode, the MFS-deployment is reduced at high airspeed.

A

True.

50
Q

What happens with the MFS in case of an FCM failure ?

A

The associated MFS (#3,#4 or #5) are in direct mode (no high altitude/speed functions,..)

51
Q

The CPT’s yoke controls which PCU’s for the aileron, elevator and rudder ?

A

Aileron - L PCU’sElevator - L PCU’sRudder - Upper PCU.

52
Q

Which P-ACE’s are used for rudder control ?

A

P-ACE 1 and 3.

53
Q

The rudder system in DIRECT mode has two modes of operating:

A
  • low speed gain (F/S extended)- high speed gain (less authority).
54
Q

What happens if the rudder pedal is blocked ?

A

Use of rudder is inop, FCM inputs are still available (high-level functions, yaw damper,…)

55
Q

What happens if a rudder PCU is blocked ?

A

Rudder is blocked at the current position.

56
Q

Two … control the slats & flaps, each through two … (one for the slats, one for the flaps) that controls the flaps and slat by operating a flaps and a slats … .

A

SF-ACEschannelsPDU (power driver unit).

57
Q

Each wing has … slats and … flaps.

A

4 slats (3 outboard, 1 inboard)2 flaps (1 outboard, 1 inboard).

58
Q

If a new S/F position is selected, which moves first? Which retracts first?

A

Slats extend first,flaps retract first.

59
Q

Every slat and every flap has … actuators for operation.

A

two.

60
Q

What happens if a skew is detected for the flaps / slaps ?

A

The FLAPS or SLATS FAIL msg appears, and that system is completely inop for the remainer of the flight.

61
Q

What happens if an excessive load is detected on the PDU ?

A

The FLAPS or SLATS FAIL msg appears. Recycling the flaps or slats is possible for two times, than the affected system is de-energized as a protection.

62
Q

Is it possible to extend flaps/slats in an electrical emergency, with the RAT deployed ? Is every S/F selection possible ?

A

Yes, although only one SF-ACE will be available, and flaps/slats will extend only at half speed. No, only up to S/F 3 (to maintain enough speed for the RAT).

63
Q

True or false ? In the case of SLATS/FLAPS fail, some combinations of slats and flaps are not possible.

A

True.

64
Q

All spoilers will deploy on the ground (WOW) when:They will retract again when:

A
  • speed > 60 kts or ws > 45 kts, and- TLA < 26°- ws < 45 kts for more than 5 sec, or- TL’s advanced.
65
Q

The MFS deploy to … degrees while the GS deploy to … degrees of deployment.In flight the MFS deploy up to… degrees.

A

40 degrees60 degrees.30 degrees.

66
Q

Are ground spoilers available in the DIRECTmode ? Are speed brakes available in the DIRECT mode ?

A

No.No.

67
Q

Speedbrakes automatically retract when:

A

-S/F 2 or higher selected (config)- speed decreases below < 180 kts (speed)- TLA > 70 deg (G/A)

68
Q

It is not to extend the speedbrakes when speed is 180 kts or below ?

A

No.

E190 - System knowledge (14 decks)

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