AFCS Flashcards
What are the five basic subsystems that comprise AFCS?
Stabilator, SAS, Trim, FPS, and Flight Director
What type of Stability is Static associated with, Short or Long Term?
Long Term
The Outer Loop is associated with which subsystems of AFCS?
Trim & FPS
AFCS is a computer system comprised of Sensors, Processors, and ___________.
Actuators (outputs)
What is the central component of the AFCS systems?
Two redundant FCCs
The __________ is the only computer that can send signals to the Trim actuators.
No.2 FCC
The ______________ caution indicates the majority of AFCS has shut down.
AFCS FAIL
What are the four signals used by the FCCs to position the Stabilator
Collective position, Lateral Accelerometer, Airspeed, and Pitch rate.
What provides the FCCs with pitch rate information for the Stabilator?
EGI’s
The stabilator is a variable angle of incidence airfoil that enhances handling qualities in which axis?
Pitch axis
Go get from VTS
What are the two cautions and one advisory associated with the Stabilator?
STAB MANUAL MODE STAB UNLOCKED STAB DEGRADED
What does the SAS DEGRADED advisory mean?
Pitch, roll, and/or yaw SAS channels from SAS 1 and/or SAS 2 has disengaged
due to a fault.
If one SAS is turned off, what happens to the remaining SAS?
The remaining SAS will double its output (up to 5%)
Which caution appears to Indicate a failure that affects both SAS 1 and SAS 2 or that hydraulic pressure is below minimum?
SAS OFF
Trim actuators respond to signals from which FCC?
2 FCC.
To release Yaw Trim above 50 knots press the pedals switches and the ________ switch?
Cyclic TRIM REL
A malfunction of an intermittent nature may be cleared by pressing which switch on the AFCS panel?
FAILURE RESET CPTR 2
The Collective Trim beeper can be used below 50 KIAS, about the yaw axis to adjust________?
Heading left or right.
When FPS is engaged, Trim performs _____ ______functions in the pitch, roll, and yaw axis.
Basic autopilot
If a malfunction is detected in FPS, the _____ ______ legends appears on the EICAS display
FPS FAIL
When one or more of the FD functions have disengaged, the ____ ____ ____ caution will appear.
FLIGHT DIR FAIL
A ____ _____ _____ caution appears when a coupled FD automatically Decouples due to a failure
FD COUPLE FAIL
