FLIGHT CONTROLS Flashcards
Which statement is correct regarding fly-by-wire (FBW) direct mode?
A. Flight envelope protection is provided and all structural protections are lost.
B. Envelope protections are lost and structural protections are reduced.
C. High-lift envelope protections are lost.
D. Structural protections are reduced except for the primary flight controls.
B
What is the purpose of the power control units (PCUs)?
A. Combine signals from pilot control inputs with air data and inertial reference inputs
B. Electromechanically position the horizontal stabilizer (HSTAB)
C. Transmit commands from the primary flight control computers (PFCCs) to the HSTAB motor control electronic (MCE) unit
D. Hydraulically position the aileron, elevator, rudder, and spoiler flight surfaces
D
What is indicated by a red DUAL message on both primary flight displays (PFDs) and a “DUAL INPUT” aural alert?
A. Failure of both sidesticks
B. Completion of the sidestick test
C. Simultaneous operation of both sidesticks
D. No input detected from either sidestick
C
What is shown when two or more aileron surfaces fail?
A. Magenta aileron surface symbol on the FLT CTRL synoptic
B. Magenta triangle on the position indicator on the FLT CTRL synoptic
C. AILERON DEGRADED caution message on the EICAS D. AILERON FAIL caution message on the EICAS
D
Which flight control surfaces are involved in roll assist, speed brake control, and ground lift dumping?
A. Elevators a n d horizontal stabilizer (HSTAB)
B. Multifunction spoilers (MFSs)
C. Rudder
D. Slats and flaps
B
Which flight controls are not controlled by the fly-by-wire (FBW) system?
A. Ailerons
B. Slats and flaps
C. Horizontal stabilizer
D. Rudder
B
What is shown on the FLT CTRL synoptic if the status of an elevator is invalid?
A. Green triangle moving against a white scale to indicate its position
B. Amber elevator surface symbol and amber triangle on the position
indicator
C. Magenta elevator surface symbol and large magenta X on the
position indicator
D. L(R) ELEVATOR FAIL caution message
C
FBW1 & 2 are powered by
And back up power by
FBW 1 - DC1 - back up by PMG1
FBW 2 - DC2 - back up by PMG 2
