Automatic Flight Flashcards
(ALL) Explain which roll mode is affected by the HDG BANK LIMIT
selector
Heading select (HDG SEL) only. (Has no effect in L-NAV mode). - In AUTO, the selector will vary the aircraft bank angle depending on true airspeed. - If manually selected between 5 and 25, the selected value is the maximum value regardless of true airspeed.
(ALL) Describe the method(s) for autothrottle (A/T) engagement
Engagement: (The A/T ARM switch must be armed):
N1/EPR
SPD
VNAV
FLCH
Pressing either G/A switch on the rear of the thrust levers.
(ALL) Describe the method(s) for autothrottle (A/T) disengagement
Disengagement:
Positioning the A/T ARM switch to OFF
Pressing either A/T disconnect switch on the rear of the thrust
levers. A second press clears the AUTOTHROT DISC EICAS message
Engaging reverse thrust.
Note: Manually over-riding autothrottle the commanded thrust lever position will NOT disengage the autothrottles.
(756) Explain what the mode color green represents in the FMA
The mode is active
(756) Explain what a green box around the mode represents in the FMA
A mode change emphasis – Displays for 10 seconds.
(756) Explain what the mode color white represents in the FMA.
The mode is armed.
(756) Explain the meanings of the AFDS annunciations: CMD and FD.
CMD (Command) – An autopilot is engaged in the command
mode.
FD (Flight Director) - The flight director on the associated side is
turned ON.
(756) Explain the flight director pitch and roll commands during takeoff
(if TO/TO selected) and when go-around is selected.
Takeoff
Pitch: The flight director pitch bar indicates an initial pitch of approximately eight degrees up.
After takeoff, the AFDS
commands a pitch
attitude to maintain
a desired speed (based
on the speed set in the
IAS/Mach window) This
speed is automatically
calculated by the AFDS.
Once a pilot changes the
speed in the IAS/Mach
window, the pitch bar
commands a pitch
attitude to maintain the
new speed.
Note: AFDS uses the speed set in the IAS/MACH window prior to takeoff for V2.
Roll: Maintains ground track until a new roll mode is selected.
Go-Around
Pitch: When a go–around is initiated, the commanded speed is the
MCP IAS/Mach window or current airspeed, whichever is higher. If the
airspeed increases and remains above the initial target airspeed for five
seconds, target airspeed resets to current airspeed to a maximum of the
IAS/MACH window speed plus 25 knots. If airspeed at initiation of go–
around is greater than IAS/Mach window plus 25 knots, that speed is
maintained.
Roll: In flight, go–around arms with flaps out of up or at glideslope capture. There is no flight mode annunciation for go–around armed in flight; although the reference thrust limit changes to GA. Go–around is activated in flight by pushing either GA switch. The roll steering indication provides guidance to maintain the ground track existng at the time of GA engagement.
Note: Selecting a new pitch or roll mode is inhibited below 400 feet RA.
(756) Explain how to manually disengage the autopilot(s).
The control wheel autopilot disengage switch
The autopilot DISENGAGE bar
9 (ALL) Explain the meaning of a steady red A/P DISC light on the center forward panel.
Illuminated (red) –
- An autopilot has been automatically or manually disconnected.
- Can be extinguished by pushing either control column autopilot disengage switch.
Note: Pushing either control column autopilot disengage switch also silences the aural Warning.
(756) Explain the indications of a degraded autopilot mode.
Illuminated (amber):
- A degraded operating condition exists in an engaged autopilot
- The light extinguishes when the condition is corrected or an
alternate autopilot is selected, provided the fault is not common to an alternate autopilot
Note: Continued operation with an autopilot in a degraded condition may result in a dangerous situation.
(ALL) Explain the indications when the autothrottle is disengaged.
Illuminated (amber):– The autothrottle system has been
disconnected
Note: The light may be extinguished by pushing either autothrottle
disconnect switch located on the outboard side of each thrust
lever.
(756) Explain the meaning of an FMC light on the center forward panel.
Illuminated (amber) – The MCDU is displaying an operationally significant message in the scratchpad
Note: Pushing the MCDU CLR key extinguishes the light and clears the
scratchpad message
(756) Identify the slip / skid indicator.
It is at the bottom of the ADI.
(756) Recall the different meanings of the ASA annunciations:
- LAND 3
- LAND 2
- NO AUTOLND.
LAND 3 – The aircraft is below approximately 1500’ RA, the APP mode is active, and the ASA shows the aircraft systems are
acceptable for CAT III operations.
LAND 2 - The aircraft is below approximately 1500’ RA, the APP mode is active, and the ASA shows the aircraft systems are
acceptable for CAT II operations.
Note: With LAND 2 displayed in the ASA, 2 Units of nose up trim bias
is applied prior to landing which may affect a manual landing if the autopilot is disconnected.
NO AUTOLND – Can appear at anytime or altitude.
The aircraft systems are NOT acceptable for Autoland operations.
(756) Recall when APP is selected, with LOC and GS armed, the GS may capture prior to the LOC capture.
-With APP selected either localizer or glideslope can be captured first
(756) Recall that when flying a back course approach, Delta recommends selecting
B/CRS prior to LOC.
(756) Recall what the N1/EPR switch controls
Thrust, not speed
(756) Recall what the N1/EPR switch controls
Thrust, not speed
Note: The display mode of EPR or N1 is engine type dependent. Pratt engines will display EPR, GE engines will display N1
(756)) Recall the FLCH switch utilizes a “two minute rule” (125 seconds) to prevent the autothrottle system from performing a full EPR climb or flight idle descent during small altitude changes.
If climb will take less than 125 seconds, throttle doesn’t drive to full for the climb.
(756) Recall the V/S (Vertical Speed) switch has no
overspeed or stall
protection, and can fly the aircraft away from the MCP selected altitude.
(756) Describe the two ways speed is controlled in VNAV.
Inputs into the FMS
Using speed intervention (Pushing the IAS/MACH selector)
(756) Recall the LNAV switch allows the FMS to control the aircraft’s
Lateral navigation and bank angle.
(756) Recall the function of the HDG HOLD switch.
Push –
- Selects the HDG HOLD roll mode
- HDG HOLD displays as the pitch mode on each FMA
- If selected with the aircraft in a turn, the AFDS rolls the aircraft wings level, and then holds present heading
(756) Recall the function of the ALT HOLD switch.
Push –
Selects the ALT HOLD pitch mode
ALT HOLD pitch mode displays as the FMA pitch mode.
The AFDS commands pitch to maintain the altitude the aircraft was at when the switch was pushed
(756) Recall that selecting G/A, while the F/D switches are turned OFF,
will
cause the flight director command bars to appear.
(756) Recall the vertical speed selector is only active if
the VERT SPD
window is open.
(756) Recall that engaging an autopilot in the takeoff or go-around mode
will result in pitch and roll modes of
V/S and HDG HOLD.
(756) Recall how another pitch or roll mode can be engaged after
localizer or glideslope has captured.
With LOC captured and G/S armed, select another roll mode
With G/S captured and LOC armed, select other pitch mode
Select GA after LOC and/or G/S are captured
Disengage autopilot(s), turn both F/D switches off then back on, and then select the desired pitch and roll modes
(756) Recall how the approach mode can be disarmed if neither the
localizer or glideslope have been captured.
Select the approach switch a second time or select other pitch or roll mode
(756) Recall how after the localizer and glideslope are both captured, they can be deactivated.
After localizer and glideslope capture, the localizer and
glideslope modes can only be deactivated by disengaging the
autopilot and turning both flight directors off or by selecting the
GA mode.
