Automatic Flight Flashcards
What are the components of the AFCS (Automatic Flight System)?
Flight Directors
Autopilot
Yaw Damper
When is the Yaw Damper automatically engaged?
After power up of EITHER Hydraulic System 1 or 3
When is the Yaw Damper automatically disengaged?
After shutdown of both Hydraulic Systems 1 & 3
How can the Yaw Damper be disengaged manually?
By pressing the YD button on the AFCS Guidance Control Panel
How many Autopilot are there?
1
How many Channels does the Autopilot have?
2 - ACTIVE/HOT Spare (alternates after each landing)
How many Servos does the Autopilot have?
1 x Pitch
1 x Roll
1 x Rudder (+1 Rudder Servo for AUTOLAND Aircraft)
What are the Servos connected to?
Flight Controls
When can you engage the Autopilot?
IN FLIGHT only - by pushing the AP Button
How is the Autopilot Disengaged in Normal conditions?
By pressing the AP Disconnect Button on the Control Column
What will you see and hear when the Autopilot is disengaged and how can they be cancelled?
AURAL warning AUTOPILOT
FMA AP Annunciation blinks RED
Cancelled by pressing the AP Disconnect button again
What happens when the TCS Button is pressed on the Control column?
The Autopilot is momentarily disengaged
Flight Directors are synchronised to the current aircraft attitude
Autopilot Resumes control when Button is released
When is the Autopilot Disengaged in an ABNORMAL situation?
- Reversion to DIRECT mode
- Either Aileron or Elevator System is disconnected
- Internal Monitor Failure
- Pilot Input Contrary to the AP
When is the Autopilot Disengaged in an NON-NORMAL situation?
- AP Button Pressed on the Guidance Panel
- Either Manual Pitch Trim Switch is actuated
- Stick Shaker Activated
- Windshear Guidance Activated
How are the Flight Directors removed with Autopilot Engaged?
FD Button pressed on the non-coupled display side ONLY
How are the Flight Directors removed with Autopilot Disengaged?
FD Button pressed on the respective panel
When are the Flight Directors Automatically activated
TO/GA Button Pressed
Autopilot Engagement
Windshear Detection
Manual Selection of any LATERAL or VERTICAL Mode
What Annunciations are seen on the FMA?
Autothrottle
Autopilot
Approach Status
Vertical
Lateral
What are the FMA Colour Codes?
Magenta - FMS commanded mode Engaged
Green - Engaged
White - Armed
Amber - Alert
Red - Abnormal
What are the Lateral Modes?
ROLL
HDG
LNAV
LOC
BC
TRACK
Which Lateral Mode is not selectable by the pilot?
TRACK
What colour & side is the Approach Status when Engaged?
GREEN RHS
What colour & side is the Approach Status when Armed?
WHITE LHS
What does the SRC Button do?
Alternates between LEFT/RIGHT FMA modes as the source for the Autopilot
- Indicated by a green ARROW
What does pressing the CRS Controller do when the CDI is displaying the FMS?
Sets The Preview Course
What happens when the NAV Button is pressed and the CDI is selected V/L and the source ILS Frequency is tuned?
LOC Engages
What happens when the NAV Button is pressed and the CDI is selected FMS?
LNAV Engages
What happens when the NAV Button is pressed with LOC or LNAV engaged?
Lateral guidance is reverted to ROLL