AutoFlight

Question 1

Recall the components of the Autoflight system:

Answer 1

The Automatic Flight System (AFS) consists of
 2 Flight Control Computers (FCC)
 Flight Control Panel (FCP)
 1 dual autothrottle servo
 1 stick pusher
 1 yaw damper actuator
 7 position sensors
 3 dual autopilot servos

Question 2

Recall how to connect and disconnect the Autothrottles:

Answer 2

 AUTO FLIGHT Switch on FCP – Push to connect
 Following modes are available:
 IAS/Mach: Throttles adjust to capture and maintain a selected
IAS/Mach
 Thrust Limit/Target: Throttles maintain thrust limit/target
 Retard: Throttles will cut back for landing at designated radio
altitude
 Clamp: During takeoff (about 80 knots) full manual control of
throttles is available with ATS connected
 Speed Protection: The ATS always maintain airplane speed above
stall speed and below max speed for any configuration
 ATS Thrust Limit: ATS prevents the engines from exceeding thrust
limits
ATS Disconnect Switches
Push – Disconnect switches on outboard side of each throttle.

Question 3

Recall how Mach Trim is provided by the FCCs:

Answer 3

Only operative when Autopilot is not engaged.
 When Mach trim is active, the stabilizer will automatically move to
compensate for pitch forces caused by Mach number.
 If Mach trim becomes inoperative, it will automatically stop driving the
stabilizer and an alert will be displayed.

Question 4

Explain the function of the Altitude Select Knob:

Answer 4

Rotate - Sets preselected altitude in altitude display window. If PROF is
engaged, sets FMS clearance ceiling (climb) or floor (descent)
.
 Pull – (Level Change Mode) Airplane will climb or descend directly to
selected altitude. ATS will go to Climb thrust or idle descent as
required. FCP altitude is displayed on FMA.
 Push - Airplane will hold current altitude. Altitude will display on FCP,
FMA, and PFD.

Question 5

Explain the features of the HDG/TRK Selector (Inner Knob):

Answer 5

 Turn - Preselects a heading or track in the display window.
 Pull - The airplane captures and follows the selected track or heading
that is in the display window.
 Push - Airplane maintains current heading or track. The window will
display this heading or track.

Question 6

Recall how the Bank Angle Limit Selector (Outer Knob) limits bank:

Answer 6

Rotate - Selects max bank angle in 5 degree increments.
 AUTO - Bank angle limits vary with speed. This selector cannot
override FMS bank angle limits. Limits are displayed on the top of the
PFD attitude sphere.

Question 7

Recall which FCP buttons arm or engage the FMS:

Answer 7

FMS SPD Switch
VOL 2
4.10.4 15
Push - Selects the armed FMS speed. The display window will show
dashes and the FMA speed changes from white to magenta.
Preselecting an FCP speed with the IAS/MACH select knob and
immediately pushing this switch can edit FMS speed.

Note: FMS SPD is disengaged by pushing or pulling the IAS/MACH
select knob or by engaging go-around.

 NAV Switch:
Push - Arms the FMS NAV capture mode or resumes FMS lateral
control.
Note: NAV ARM can be cancelled by selecting HDG/TRK hold,
APPR/LAND arm, capturing the localizer, or capturing FMS NAV.

 PROF Switch:
Push - Engages FMS vertical profile guidance.

Question 8

Recall how to engage autopilot 1 or autopilot 2:

Answer 8

AUTO FLIGHT Switch – Push
o Engages ATS and one AP in the FD mode that has been
selected.
o If no FD mode has been selected, the AP engages in HDG/TRK
HOLD and either altitude hold (if level) or vertical speed hold (if
climbing/descending).
After AP engagement, each push alternates the AP between AP1 and AP2.
This is displayed on the FMA.

Question 9

Recognize the FMA Speed Control Window differences between FMS and
AFS speed modes:

Answer 9

Mode is magenta when the FMS speed is engaged and the airplane is
controlling to an FMS or pilot selected speed.
 The mode is white when an AFS speed mode is engaged and
controlling to a pilot selected speed.

Question 10

Recall the annunciations associated with the Speed Control Window of
the FMA:

Answer 10

When THRUST mode is on, ATS should be engaged. If not, the white
ATS OFF box appears. If ATS is inop, the amber ATS OFF box
VOL 2
4.10.8 16
appears.
 If a speed has been commanded that cannot be maintained due to
vertical speed or FPA, the speed and mode will flash. Flashing
continues until the airplane accelerates towards the target speed.
 If the mode changes due to an auto reversion, the new mode flashes 5
times.
 If speed protection engages, HI SPEED or LO SPEED PROTECTION
will be displayed.
 Windshear warnings are displayed by a flashing white
WINDSHEAR followed by a steady white WINDSHEAR

Question 11

Recall the annunciations associated with the FMA Roll Control Window:

Answer 11

Shows roll mode. Digits are displayed in HDG or TRK mode.
 Engaged AP (1 or 2) is shown.
 FMS modes are magenta, pilot and AFS modes are white.
 AUTOLAND mode is green.
 If the mode changes due to an auto reversion, the new mode flashes 5
times.
 Armed modes are in small characters above the engaged mode

Question 12

Recall the annunciations associated with the FMA Altitude Control
Window:

Answer 12

Shows FMS or FCP target altitude and profile mode. FMS altitudes and
modes are magenta. Pilot selected altitudes and modes are white.
 If the mode changes due to an auto reversion, the new mode flashes 5
times.
 Armed modes are shown above the engaged mode.
 The GROUND PROX warning is in red and flashes with the engaged
mode.
 The WINDSHEAR mode annunciation has priority over all modes
including GPWS

Question 13

Recall the features of the GA switches:

Answer 13

Pushing either switch causes aircraft to enter the go-around mode as follows:
 FDs pop-up to GA (even if off)
 AP, if on, will follow FD commands
 ATS goes to go-around thrust limits
 Parallel rudder is active
 Bank limited to 10 degrees
 Reference speed, PITCH and GO-AROUND appear on FMA
 Windshear guidance comes on if windshear warning is active

Question 14

Recall the features of AUTOLAND switch:

Answer 14

Push – arms the APPR and LAND modes

 A tuned ILS is required to arm AUTOLAND

Question 15

Recall the features of AFS OVRD switch:

Answer 15

Push Down – Allws emergency disconnect of respective AP, ATS, and
Yaw Damper

Question 16

Recall the features of the Windshear Alert and Guidance System (WAGS):

Answer 16

During takeoff, approach and go-around, the WAGS system provides
visual/aural windshear warnings and AP/FD windshear guidance
 On takeoff, WINDSHEAR appears on the PFD and the FMA
speed/altitude windows if windshear is detected and three cycles of
TAILWIND SHEAR or HEADWIND SHEAR will sound. The FD will
command V2 + 30.
 On App and Go-around: same visual and aural annunciations will
activate. PFD speed bug will go to 1.3Vs + 20 and the ATS, if on, will
control to this speed.
 On Go-around: Guidance will not be available unless GA button is
pushed or throttles are advanced past 95% GA thrust limit once
windshear is detected.
o ATS, if off, will come on automatically and advance to GA limit
o FD, if off, will pop up automatically

For takeoff, approach and go-around, the PLI indicates the difference
between aircraft AOA and stick shaker AOA.
o At stick shaker AOA, the cyan PLI will turn RED.
o PLI is to be used as an indication only – and not for guidance
 GPWS is inhibited during windshear guidance when FD commands are
being followed
 TCAS is also inhibited (except for TA advisories on the ND)