Global 6500 - AFCS Flashcards
When does the AFCS initially engage the yaw damper?
Automatically when a Remove Electronics Unit (REU) and two sources of roll and yaw are available (IRS)
What is the maximum altitude for flight with the yaw damper disengaged?
41,000 ft
What will happen if the YD is disengaged with the AP engaged?
AP will disengage
What is the minimum height at which the autopilot can be engaged?
400 ft AGL
What is the minimum height that the autopilot can be used during a CAT I or CAT II precision approach (ILS)?
Category I or II ILS: 80 ft AGL
What is the minimum height that the autopilot can be used during a non-precision approach with no vertical guidance?
400 ft AGL
What is the minimum height that the autopilot can be used for a non-precision approach with vertical path reference?
160 ft AGL
What is the speed limitation for FLC mode use?
Above .85 M is prohibited
When must both STALL PUSHER switches be on?
For duration of the flight
What are the four purposes of the MSTR DISC pushbutton on the control wheel?
- Disconnects the autopilot,
- Silences a disconnect aural,
- Interrupts pitch trim while held,
- Inhibits the stick pusher while held (non-EASA a/c)
What will cause manual disengagement of the autopilot?
Pressing the AP pushbutton,
Pressing either MSTR DISC pushbutton,
Manual trim activation,
Pressing the YD switch on the FCP,
Physical override of the AP servos (not recommended)
What will cause automatic disengagement of the autopilot?
Unusual attitude,
Stall warning activation,
Activation of windshear avoidance (2-sec delay)
What is the purpose of the touch control steering (TCS) button?
Momentarily overrides the autopilot and sync FPA, speed or VS value
What will happen in the event the master AFCS/AT fails?
Standby AFCS/AT automatically takes over and the FD modes will revert to basic ROLL and FPA
How is the master AFCS identified?
FCP indicator lights adjacent
to the YD and AP buttons
How is the AFCS 1 manually selected to AFCS 2?
Selecting the AFCS 1/2 switch
on the reversion switch panel (RSP)
Does the indicator light on the flight control panel (FCP) indicate that the associated mode is currently active?
No. The pilot must confirm the mode status or operation from the flight mode annunciator (FMA) on the PFD.
How are active/armed flight director and autothrottle modes indicated on the FMA?
Active shows in green, armed shows in white
How does the autopilot engage if no vertical or lateral flight director modes are armed?
Basic ROLL and FPA modes
What is the steepest angle for approaches?
3.5 without AFM supplements
What does the autopilot do in ROLL mode?
Heading hold when the bank is <5’b0, holds the current bank angle if the bank is >5’b0 to a maximum of 30’b0
When is the FMS prohibited as a sole NAV source for instrument approaches?
Localizer-based approaches, VOR approaches, NDB approaches
Note: VOR and NDB approaches require a bearing pointer shown in addition to FMS guidance
What is required for an automatic Nav-to-Nav transfer to occur?
LNAV is the active lateral mode,
the LOC beam is captured,
and APR selected on the guidance panel
When is the ILS automatically tuned by the FMS?
30 nm direct distance to the airfield
When is the LOC preview mode enabled?
Automatically at 30 nm
During an ILS approach, when does the independent approach mode of the AFCS occur?
GS Capture
What is the FD “pitch target box” command for a normal takeoff?
Initially set to 17.5 and can move between 11.5 to 20 to hold the selected speed
What is the FD “pitch target box” command during takeoff, after an engine failure?
Initially set to 13 and moves between 8 to 13 to maintain selected speed
When is the “pitch target box” removed?
Removed upon selection of any vertical mode
How does the FD respond during climb-out when TOGA is selected during basic and FMS-assisted go-arounds?
Basic: in green navigatin, it holds the current heading in a wings-level mode and maintains a pitch from 10 minimum to 20 maximum changing to ALTS at the MAP altitude
FMS-assissted: during an ILS/GPS approach, GA changes to FMS NAB and VNAV at 400 ft AGL
Note: Half bank is not available for use during a missed approach
How is the takeoff mode cleared?
Engaging the AP,
selecting another vertical mode,
pressing the TCS button
What is the bank angle for 1/2 BANK?
17
What happens to the AP/FD modes during a windshear warning?
Escape guidance is provided via the guidance cue, autothrottle and vertical modes indicate WSHR, thrust setting is TO EPR, autopilot disconnects after 2-sec delay
How is the autothrottle GA mode cleared?
Select another vertical mode
On the ground, which two parameters are required for either autothrottle engage switches to function?
Aircraft speed less than 60 kt, throttle levers are above 23 TLA
When does the autothrottle transition to the retard mode?
Aircraft in landing configuration, radio altitude of 50 ft AGL
What does an amber LIM in the A/T mode annunciation indicate?
Flashing LIM: an airspeed target deviation is sensed
Steady LIM: structure limit, maximum speed limit, or a maximum power limit
When is the autothrottle takeoff HOLD control mode activated?
On ground above 60 kt or in flight below 400 ft AGL
How is the EDM mode cancelled?
Disengage the AP
What occurs when EDM is manually selected above FL250?
FD commands a descent to 15,000ft,
FD commands a left turn 90,
A/T targets airspeed of VMO-10 or MMO-0.02 until 15,000ft, then 250 KT
Prior to what speed must the autothrottle be verified engaged and takeoff thrust verified set?
60 KIAS
What does the horizontal yellow line on the airspeed tape indicate?
Minimum maneuvering speed (Vate)
Which parameters are used to calculate the minimum maneuvering speed (Vate) value?
IAS, flap position, and stall data
What does Vate indicate \
on the airspeed tape?
Lowest speed the AT or flight guidance will allow
What is the function of the FPV cage switch on the control wheel?
Allows the pilot to laterally center the FPV and guidance cue should the FPV and cue be shown at their limiting region of the PFD
What are the three conditions required to automatically activate the automatic emergency descent mode (EDM)?
AP engaged, altitude above 25,000 ft, cabin altitude exceeded 14,500 ft
How will the aircraft react when the emergency descent mode (EDM) is active?
FD will command a descent to 15,000 ft,
FD will command a turn of 90 left,
autothrottles will target airspeed of VMO-10 until 15,000 ft, then 250 kt
How is the emergency descent mode (EDM) cancelled?
Disengage the AP
