04 Automatic Flight Control System Flashcards
Flight Control Computers (FCCs) recieves data from what 3 source types?
Inertia Reference System (IRS)
Air Data Computers (ADCs)
Navigational (NAV) systems
What does the flight control system primarily consists of?
- Four flight control computers
- One flight control panel
- Aileron and elevator servos
- Two linear actuators for the rudder (yaw damping)
How many Flight Control Computers?
2 sets of 2 FCCs (only one set is active i.e. 1A and 2A, or 1B and 2B, the other set is in standby)
What actions triggers Autopilot to disengage?
- AP/SP DISC (on the yoke)
- Operating either stabilizer trim switch
- Pushing AP ENG button on the FCP
- Lowering AP DISC switch-bar
- TOGA button (Takeoff or go-around)
- Switching AFCS (with AFCS SEL selector)
- disengaging yaw dampers
What triggers Autopilot to automatically disengage?
- FCC detects failure in any axis
- Powerloss to an active FCC (Flight Control Computer)
- Loss of either IRS (Inertial Reference System)
- Dual yaw damper failure
- Excessive AC attitude +25 or -17 pitch, or 45 roll.
- Stick shaker activates
- AFCS switch (Automatic Flight Control System)
- 2 seconds after WINDSHEAR warning
What does a left pointing arrow under green “AP” on the PDF ADIs mean?
Autopilot is getting data from FD 1 (ADC 1, IRS 1 and left side NAV sources)
Flight Director lateral modes:
Roll
Heading select
1/2 Bank
Navigation (FMS, VOR, LOC NAV)
Approach (FMS, VOR, LOC APPR)
B/C
Takeoff
Go-around
At what altitude is 1/2 Bank automatically selected?
31,600 ft MSL
Flight Director vertical modes:
Pitch
Altitude preselect
Altitude hold (ALT)
Vertical speed (VS)
Flight level change (FLC)
Takeoff
Go-around
Glideslope
FMS vertical navigation (VNAV)
What is FLC Overspeed Protection Mode?
Flight directors appear 5 knots or 0.02 Mach below Vmo. 10 KIAS (0.015M) above Vmo flashing yellow FLC sign appear.
Vertical Takeoff Mode commands how many degrees pitch-up?
And with engine loss?
12 degrees
10 degrees with one engine
Vertical Go-Around Mode commands how many degrees pitch-up?
10 degrees pitch-up
When does glideslope mode automatically arm?
- Indbound
- APPR mode active
- Within 105 degrees of LOC course
What is TURB mode on the FCP (Flight Control Panel)?
When active it prevents the FCC from instantaneously responding to pitch and roll changes brought about by flight through turbulent air.
AP: What type of Autopilot is installed on the CL604?
Dual channel, two-axis (pitch and roll) autopilot
AP: At what speed is Yaw Damper 2 commanding the rudder to the center position?
256 KIAS
(Yaw Dampers are essentially automatic rudder trim)
FD:
G/A pitch
T/O pitch
What color is active and what color is armed
10 degrees
12 degrees
Green = active
White = armed
AP:
Min engagement altitude for:
- non precision
- precision (ILS)
320’ AGL
80’ AGL
At what altitude is airspeed indication automatically changed from KIAS to Mach?
33,600 feet
