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Delta 73N > Automatic Flight > Flashcards

Automatic Flight Flashcards

1
Q

Explain the meaning of a green light illuminated in any MCP mode selector switch

A

The switch illuminates to indicate mode selection and that the move can be deselected by pushing the switch again

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2
Q

Explain the meaning of a Master (MA) F/D indicator light

A

The master FCC is indicated by illumination of the respective master (MA) F/D indicator light. The master FCC is determined as follows

  • with neither A/P engaged in CMD, the FCC for the first F/D turned on is the master
  • with one or both A/Ps engaged in CMD, the FCC for the first A/P in CMD is the master FCC, regardless of which F/D is turned on first

Note: independent F/D operation is indicated by illumination of both MA lights

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3
Q

Explain which roll modes are affected by the bank angle selector

A
  • HDG SEL
  • VOR
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4
Q

Describe the manual methods for A/T engagement and disengagement

A

Engagement:
- Moving the magnetically held A/T ARM switch to ARM, arms the A/T for engagement while in the following pitch modes:
- LVL CHG
- ALT ACQ
- V/S
- VNAV
- ALT HLD
- G/S capture
- TO/GA

Disengagement:
- Moving the A/T Arm switch to OFF
- OR pushing either A/T disengage switch

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5
Q

How is A/T disengagement indicated

A
  • A/T Arm switch releasing to OFF
  • Flashing red A/T Disengage lights on the fwd panel

The A/T disengage lights do not illuminate when the A/T automatically disengages after landing touchdown

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6
Q

A/T may automatically disengage when

A
  • 2 sec have elapsed since landing touchdown
  • Thrust levers become separated more than 10 degrees, except during takeoff
  • Significant thrust difference along with control wheel input of 10 degrees or more throughout the entire flight envelope
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7
Q

Explain what the color green represents in the FMA

A

Engaged or captured mode

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8
Q

Explain what a green box represents in the FMA

A

A mode change highlight symbol (rectangle) is drawn around each pitch, roll, CWS, A/P status, and thrust engaged annunciation for a period of 10 seconds after each engagement

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9
Q

Explain what the color white represents in the FMA

A

Armed modes are shown in smaller white letters at the bottom of the flight mode annunciation boxes

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10
Q

Explain the different meaning of the AFDS autopilot status annunciations: CMD, FD, CWS P, CWS R, SINGLE CH and AUTOPILOT

A

CMD (green) - one or both A/Ps are engaged
FD (green) - the flight director is ON and the A/P is either OFF or engaged in CWS
CWS P (amber) - pitch mode engaged in CWS
CWS R (amber) - roll modes engaged in CWS
SINGLE CH (amber) - for single A/P ILS approach, annunciation after LOC capture and remains on for entire approach. For dual A/P ILS approach, annunciation after LOC capture and extinguishes after pitch monitor confidence test is successfully completed, then goes to CMD (green)
- SINGLE CH (green) - for an IAN approach, annunciation after FAC capture and remains on until AP disengaged or 100 ft RA
AUTOPILOT (flashing amber) - A/P remains engaged below 100 ft RA for an IAN approach

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11
Q

Explain what conditions must be met before a second A/P can be engaged

A
  • Both VHF NAV receivers tuned to the ILS frequency
  • Approach mode (APP) selected
  • Second A/P engaged in CMW prior to 800 ft RA
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12
Q

Explain the function of the A/P DISENGAGE bar

A

Pull down:
- Exposes yellow background
- Disengages both A/Ps
- Prevents A/P engagement

Lift up:
- Conceals yellow background
- Enables A/P engagement

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13
Q

Explain the meaning of an illuminated amber A/P Autopilot Disengage lights on the fwd panel

A

A/P illuminated amber and flashing:
- A/P reverted to CWS pitch or roll while in CMD

Reset by P/RST (push to reset) either light or selecting another mode

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14
Q

Explain the meaning of an illuminated red A/P Autopilot Disengage lights on the fwd panel

A

A/P illuminated red and flashing:
- flashes red and tone sound when autopilot has disengaged

A/P illuminated red and steady:
- stabilizer out of trim below 800 ft RA on dual channel approach
- OR ALT ACQ mode inhibited during A/P go-around if stabilizer not trimmed for single A/P operation
- OR automatic ground system tests fail

Reset by pushing P/RST either light or either A/P disengage switch

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15
Q

Explain the indications of a disengaged A/T

A
  • Flashing red A/T P/RST light on the fwd panel
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16
Q

Explain the meaning of the amber STAB OUT OF TRIM light on the left fwd panel

A

A/P not trimming stabilizer properly (operates only with A/P engaged)

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17
Q

Explain what will happen on approach when TO/GA is selected below 2000 ft RA

A
  • No A/P or single A/P engaged: disconnects A/P (if engaged) and requires manual F/D go around
  • Both A/Ps engaged (with FLARE armed on the FMA): A/P go-around mode is activated. A/Ps remain engaged.
18
Q

Difference in commanded thrust when selecting To/GA once versus twice during a go-around

A

First push:
- A/T provides reduced go-around N1 to produce 1000 to 2000 rpm rate of climb

Second push:
- A/T advances to the full go around N1 limit

19
Q

Specify the AFDS flight mode annunciations and their location

A

The FMA are displayed just above the attitude indicator on the PFD. The mode annunciations from left to right are:
- A/T
- Roll
- Pitch

20
Q

Explain the meaning of the AFDS FMA A/T modes

A

N1 - the A/T maintains thrust at the selected N1 limit displayed on the thrust mode display, including full go-around N1 limit

GA - the A/T maintains thrust at reduced go-around setting

RETARD - displayed while A/T moves thrust levers to the aft stop

FMC SPD - the A/T maintains speed commanded by the FMC

MCP SPD - the A/T maintains speed set in the MCP IAS/MACH display

THR HLD- the thrust lever A/T servos are inhibited; the pilot can set the thrust levers manually

ARM (white) - no A/T mode engaged. The thrust lever A/T servos are inhibited: the pilot can set thrust levers manually. Minimum speed protection is provided.

21
Q

Explain the meaning of the AFDS FMA pitch modes

A

TO/GA (takeoff) - engaged for takeoff by turning both F/D switches ON and pushing either TO/GA switch

TO/GA (go-around) - engaged for go-around by pushing the TO/GA switch under the following conditions:
- in flight below 2000 ft RA
- OR in flight above 2000 ft RA with flaps not up OR G/S captured
- not in takeoff mode
- either F/D ON or OFF

VNAV SPD - the AFDS maintains the FMC speed displayed on the airspeed indicator and/or the CDU CLIMB or DESCENT pages

VNAV PTH - the AFDS maintains FMC altitude or descent path with pitch commands

V/S (green, engaged) - commands pitch to hold a selected vertical speed

V/S (white, armed) - V/S mode can be engaged by moving vertical speed thumb wheel

ALT ACQ - transition maneuver entered automatically from a V/S, LVL CHG, or VNAV climb or descent to selected MCP altitude. Engages but does not annunciation during VNAV transition

ALT HOLD - commands pitch to hold MCP selected altitude or uncorrected barometric altitude at which ALT HOLD switch was pushed

MCP SPD - pitch commands maintain IAS/MACH window airspeed or Mach

G/S (white) - the AFDS is armed for G/S captured
G/S (green) - the AFDS follows the ILS G/S

FLARE (white) - during a dual A/P ILS approach FLARE is displayed after LOC and G/S capture and below 1500 ft RA. The second A/P couples with the flight controls and A/P gap-around mode arms

FLARE (green) - during dual A/P ILS approach, flare engages at 50 ft RA. FLARE accomplished the auto land flare maneuver

G/P (white) - the AFDS is armed for G/P capture
G/P (green) - the AFDS follows the IAN glide path

22
Q

Explain the meaning of the AFDS FMA roll modes

A

LNAV (green) - the AFDS intercepts and tracks the active FMC route

LNAV (white, prior to T/O) - the AFDS is armed to engage LNAV at 50 ft RA
LNAV ( white, approach) - in the approach phase and a missed approach exists in the flight plan

HDG SEL - the A/C is turning to or is on the hdg selected in the MCP heading display

VOR/LOC (white) - AFDS is armed to capture selected VOR or LOC course
VOR/LOC (green) - AFDS tracks selected VOR course or tracks selected LOC course along the inbound front course bearing

FAC (white) - the AFDS is armed to capture the IAN final approach course
FAC (green) - the AFDS tracks the IAN final approach course along the inbound course bearing

B/CRS (white) - the AFDS is armed to capture the LOC final approach back course
B/CRS (green) - the AFDS tracks the LOC final approach course along the inbound back course bearing

23
Q

Explain how to arm/engage the Integrated Approach Navigation (IAN) modes and their meaning

A

The IAN modes are armed/engaged by selecting the APP button on the AFDS mode control panel (MCP). Once armed, the A/P F/D will capture and track the LOC/final approach course and G/S or glide path.

  • ILS: VOR/LOC and G/S will be the displayed roll and pitch modes
  • ILS approach with G/S selected off or a LOC only approach: VOR/LOC and G/P will be the displayed roll and pitch modes
  • FMC IAN approach: FAC and G/P will be the displayed roll and pitch modes
24
Q

Describe the go-around roll mode - LNAV in lieu of Track hold

A
  • When a missed approach exists in the flight plan and the FCCs are capable of entering go-around, LNAV arm will be annunciated on the FMA. Track hold will automatically transition to LNAV during missed approach.
  • During autoland operations with FLARE arm or FLARE engage displayed, if TO/GA is pressed, LNAV will engage when the airplane is above 400 ft. Below that altitude the roll mode will be track hold
  • During an approach without FLARE arm or FLARE engage displayed, if TO/GA is pressed, LNAV will engage when the airplane is above 50 ft. Below that altitude the roll mode will be track hold.
25
Q

Explain the function of the SPEED switch on the MCP

A

Push (select, light illuminates):
- engages A/T in SPEED mode if compatible with engaged AFDS modes
- illuminates SPEED switch light
- maintains speed in MCP IAS/MACH display

Push (selected, light extinguishes):
- deselects speed mode and extinguishes switch light
- engages A/T in ARM mode

26
Q

Explain the function of the speed intervention (SPD INTV) switch on the MCP

A

Push, only when VNAV engaged
- IAS/MACH display alternately shows selected IAS/MACH and blanks
- when IAS/MACH display is unbanked, the FMC speed intervention is active, FMC target speed is displayed, and IAS/.
MACH selector may be used to set desired speed
- when IAS/MACH display is blank, FMC computed target speed is active and displayed on the airspeed indicator

27
Q

Explain the function of the VNAV switch on the MCP

A

Push
- VNAV switch light illuminates
- pitch modes annunciates VNAV SPD, VNAV PTH
- A/T mode annunciates FMC SPD, N1, RETARD, or ARM (white)
- IAS/MACH display blanks and airspeed cursors positioned to FMC commanded airspeed

28
Q

Explain the function of the Level Change (LVL CHG) switch on the MCP

A

Push
- LVL CHG switch light illuminates
- pitch mode annunciates MCP SPD for climb or descent
- A/T mode annunciates N1 for climb or RETARD followed by ARM (white) for descent
- IAS/MACH display and airspeed cursors display target speed

29
Q

Explain the function of the Altitude Hold (ALT HLD) switch on the MCP

A

Push
- engages ALT HOLD command mode
- commands pitch to hold uncorrected barometric altitude at which switch was pressed
- annunciates ALT HOLD pitch mode and illuminates ALT HLD switch light

30
Q

Explain the function of the vertical speed (V/S) switch on the MCP

A

Push
- arms or engages V/S command mode
- commands pitch to hold vertical speed
- engages A/T in speed mode to hold selected airspeed
- annunciates V/S pitch mode and illuminates V/S switch light

31
Q

Explain the function of the altitude intervention switch on the MCP

A

Allows manual deletion of next FMC altitude constraints via altitude SEL and ALT INTV switch.

Push during VNAV climb:
- lowest FMC altitude constraints below selected MCP altitude is deleted
- if airplane is currently at an FMC altitude constraint, deletion allows airplane to resume climb. MCP altitude must be set above current altitude
- for each press of switch, one deletion occurs
- if MCP altitude is set above current FMC altitude, FMC cruise altitude resets to MCP altitude. FMC cruise altitude cannot be decreased using ALT INTV switch

Push during VNAV cruise:
- if MCP altitude is set above current FMC cruise altitude, FMC resets cruise altitude to MCP altitude and initiates a cruise climb
- if MCP altitude is set below current FMC cruise altitude, an early descent is initiated. Lower FMC cruise altitude cannot
be entered using ALT INTV switch

Push during VNAV descent:
- the highest FMC altitude constraint above MCP altitude is deleted
- if airplane is currently at an FMC altitude constraint, deletion allows airplane to continue descent. MCP altitude must be
set below current altitude
- if all FMC altitude constraints are deleted during VNAV path descent, an automatic transition to a VNAV speed descent
is made

32
Q

Explain the function of the LNAV switch on the MCP

A

Push
- commands AFDS roll to intercept and track the active FMC route
- annunciates LNAV as roll mode and illuminates LNAV switch light

33
Q

Explain the function of the VOR LOC switch on the MCP

A

Push
- commands AFDS roll to capture and track selected VOR or LOC course
- annunciates VOR/LOC armed or engaged as roll mode
- illuminates VOR LOC switch light

34
Q

Explain the function of the HDG SEL switch on the MCP

A

Push
- engages HDG SEL command mode
- commands roll o follow selected heading
- annunciates HDG SEL as FMA roll mode
- illuminates HDG SEL switch light

35
Q

Explain the function of the CMD ENGAGE switch (A or B) on the MCP

A

Push
- engages A/P
- enables all command modes
- displays CMD in A/P status display on PFD
- pushing an engage switch for second A/P, while not in approach mode, engages selected A/P and disengages first A/P

36
Q

Explain the function of the CWS ENGAGE switch (A or B) on the MCP

A

Push
- engages A/P
- engages pitch and roll modes in CWS. Other pitch and roll modes not enabled
- displays CWS P or CWS R in A/P status display on PFD
- A/P pitch and roll controlled by pilot with control wheel pressure

37
Q

Explain the function of the altitude selector on the MCP

A

Rotate
- sets altitude in ALTITUDE display in 100 ft increments
- arms V/S (white) mode if rotated while in ALT HOLD

38
Q

Explain the meaning of the Speed Condition Symbols on the MCP

A

Overspeed and underspeed limiting symbol appears when commanded speed cannot be reached

Underspeed limiting (flashing “A”)
- minimum speed

Overspeed limiting (flashing “8”)
- Vmo or Mmo limit
- Landing gear limit
- Flap limit

39
Q

Explain the function of the changeover switch on the MCP

A

Push
- changes IAS / MACH display between IAS and MACH
- automatic changeover occurs at approximately FL260

40
Q

Explain the function of the N1 switch on the MCP

A

Push (illuminates light)
- engages A/T in N1 mode if compatible with AFDS modes already engaged
- illuminates N1 switch light

Push (extinguishes light)
- deselects N1 mode and extinguishes switch light
- engages A/T in ARM mode

Delta 73N (17 decks)

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