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E175 > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

Fly-By-Wire technology electronically controls which of the following?

A

Flaps/slats,
Horizontal stabilizer,
elevators,
rudder,
and multifunction spoilers/ground spoilers

    • NOT aileron - -
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2
Q

Secondary flight controls, elevators, rudder, and multi-function spoilers are
controlled by _______.

A

Fly-By-Wire technology

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3
Q

Which of the following answers is the most inclusive of Fly-By-Wire components.

A

3 Spoiler ACE (S-ACE) units (multifunction and ground types split up between the 10 panels)

3 Primary ACE (P-ACE) units (elevators and rudder - 2 actuators per ACE)

2 Slat/Flap ACE (SF-ACE) units (each ACE has a slat channel and a flap channel)

1 Horizonatal Stabilizer ACE (HS-ACE) unit (2 channels, one surface on one ACE)

      • NO AILERON ACE - - -
      • NO BU (BACKUP ACE) - - -
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4
Q

True or False: The Ailerons are fly-by-wire.

A

False

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5
Q

True or False: Wheel speed signals are provided to the spoiler ACE for ground
spoiler deployment.

A

True

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6
Q

This system provides the aircraft attitude and acceleration information to FCMs
used for AOA limiting function calculations.

A

Inertial Reference System

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7
Q

This system provides TLA to the FCMs used for elevator thrust compensation.

A

FADECS

[TLA - Thrust Lever Angle]

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8
Q

This system provides wheel speed signals used for ground spoiler deployment.

A

Brake Control Modules (BCMs)

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9
Q

This system provides autopilot commands to the fly-by-wire system for aircraft
Control.

A

Automatic Flight Control System (AFCS)

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10
Q

Which two modes of operation does the flight control system have?

A

Direct mode/Normal mode

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11
Q

True or False: In Direct mode, the FCM provides software-based airspeed gain
schedules and control limits to the P-ACE units.

A

False [hardware-based]

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12
Q

True or False: In Normal mode, the FCM provides software-based airspeed gain
schedules and control limits to the P-ACE units.

A

True

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13
Q

The following high-level functions are available in normal mode EXCEPT _______.

A

–NOT AUTOTHROTTLES–

Airspeed gain scheduling,
auto thrust compensation,
AOA limiting,
Yaw Damper,
and turn coordination,
rudder flight authority,
configuration change compensation

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14
Q

True or False: For the rudder, elevator, and stabilizer control surfaces, the flight
control system has a function called “Odd-Even Day Engage” configuration to
select which set of channels and hydraulic system is active on a particular day.

A

True

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15
Q

If a jam occurs in the aileron control system, what can be done?

A

The two halves of the aileron control system can be disconnected by using the AILERON DISCONNECT handle in the flightdeck

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16
Q

The ROLL scale displays aileron trim indications on the _______.

A

EICAS

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17
Q

If a hydraulic system that powers an active elevator PCU loses pressure, which of
the following occurs?

A

The standby PCU becomes active

18
Q

Yaw control of the aircraft is provided by the rudder. It is hydraulically powered by
_______ PCUs and receives signals from the aircraft’s FBW system.

A

2

19
Q

The PCUs operate in an _______ / _______ mode with the active PCU alternating
every time the system is powered up.

A

active/standby

20
Q

True or False: If the rudder is in Direct Mode, the amount of rudder deflections is
based on flap/slat settings.

A

True

21
Q

If the rudder is in Direct Mode and the slats/flaps are retracted, the rudder is
allowed _______.

A

Minimum deflection

(high speed mode with slats and flaps up)

22
Q

The yaw scale displays rudder trim on the _______.

A

EICAS

23
Q

The aircraft is equipped with a total of _______ leading edge slats and _______
double-slotted trailing edge flaps.

A

8, 4

24
Q

True or False: During extension, the slats move to the selected position followed
by the flaps; this sequence is reversed during retraction.

A

True

25
Q

Slat and flap position is displayed on the _______.

A

EICAS

26
Q

True or False: If the “FLAP FAIL” message appears in flight, the slats will still operate.

A

True

27
Q

If the RAT is the only power source available, only one SLAT/FLAP channel will be
powered and the slats and flaps will operate at _______ speed.

A

half

28
Q

The spoiler control system consists of a total of _______ spoiler panels.

A

10

29
Q

The multi-function spoilers have the following functions.

A

Roll control,
speed brakes,
ground spoilers

30
Q

True or False: Hydraulic pressure powers the spoiler system.

A

True

31
Q

Ground spoiler extension occurs when which of the following conditions are met?

A

The WOW signals indicate on ground,

the wheel speed is above 45 knots or airspeed is above 60 knots,

TLA is below 26 degrees

32
Q

After rollout, spoilers will automatically retract when the wheel speed is below
_______ kts. for at least _______ seconds.

A

45 kts, 5 sec.

[or TLA >24 degrees]

33
Q

If in ground spoiler mode, the spoilers will automatically retract if the thrust levers
are moved beyond a TLA of _______ degrees.

A

70 degrees

34
Q

The aircraft is equipped with how many P-ACE unit(s)?

A

3

(P-ACE - Primary Actuator Control Electronics) [2 in the forward E-Bay, 1 in the aft E-Bay]

35
Q

True or False: The flight control modes available on the aircraft include Alternate
and Direct.

A

False [Normal, Direct]

36
Q

True or False: The roll control system includes multi-function spoilers to assist the
Ailerons.

A

True

37
Q

True or False: When the elevator control system is in Direct mode, the autopilot is unavailable.

A

True

[as well as airspeed gain scheduling and AOA limitations]

38
Q

When using the YAW selector knob, trim commands are limited to _______ seconds.

A

3 sec.

39
Q

True or False: During slat and flap extension, the flaps move to the selected
position followed by the slats.

A

False

40
Q

True or False: If the spoiler system is in Direct mode, ground spoilers are not
available.

A

True

41
Q

Which flight controls do NOT disconnect in the event of a control jam?

A

–NOT RUDDER–

Aileron and elevator disconnect

42
Q

Which of the following trimmable surfaces has an aural warning if it is engaged
longer than 3 seconds?

A

Pitch trim

E175 (23 decks)

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