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FedEx 767 Systems > FedEx 767 Autoflight Systems - 2 > Flashcards

FedEx 767 Autoflight Systems - 2 Flashcards

1
Q

FedEx 767 - Autoflight

How can you disengage all modes of the autoflight system?

A

Disengage the Autopilot and turning both Flight Directors off.

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2
Q

FedEx 767 - Autoflight

What controls each of three separate autopilot systems?

A

Each autopilot system is controlled by a separate Flight Control Computer through autopilot servos.

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3
Q

Once captured, how can you disengage the autopilot from the Localizer or ILS?

A

Disengage the Autopilot and turning both Flight Directors off.

Or….

Pressing the Go Around (GA) button

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4
Q

FedEx 767 - Autoflight

What is required for an autopilot to be engaged?

A
  • Two operational Flight Control Computers (FCCs).

- Pressing one A/P Engage Switch.

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5
Q

FedEx 767 - Autoflight

Two ways to disengage the Autopilot:

A
  • Pressing the A/P Disengage Button (on the yoke)

- Pressing the A/P Disengage Bar (on the MCP)

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6
Q

FedEx 767 - Autoflight

What to ways can you make the Flight Director Steering Indicators (Flight Director Bars) appear?

A
  • Turn on either Flight Director Switch

Or…

  • Press the GA Switch when…
    – Airplane > 80 kts
    – Flaps are not retracted
    (Can then be turned of by recycling a
    FD switch on/off.
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7
Q

FedEx 767 - Autoflight

Describe “LAND 3”:

A
  • Three Autopilots engaged and operating normally for an automatic landing. (FAIL OPERATIONAL)

The Autopilot system level of redundancy is such that a single fault cannot prevent the autopilot system from making an automatic landing or fail operation.

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8
Q

FedEx 767 - Autoflight

Describe “LAND 2 / NO LAND 3”:

A
  • AFDS redundancy is reduced
  • The level of redundancy is such that a single fault cannot cause significant deviation from the flight path or fail passive.
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9
Q

FedEx 767 - Autoflight

Describe “NO AUTOLAND”:

A
  • A fault condition exists which results in a “LAND 2” condition.
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10
Q

FedEx 767 - Autoflight

At what altitude will the Autoland Status not change?

A

Below 200’ radio altitude, the ASA will not change, except to “NO AUTOLAND” to indicate the AFDS is unable to make an auto-landing.

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11
Q

FedEx 767 - Autoflight

What are the Autothrottle Modes on the FMA?

A

A/T Modes on the FMA:

  • SPD
    – Control Thrust to maintain Speed
  • IDLE
    – Is reducing or has reduced to idle
    – May engage in a VNAV descent… will after FLARE
  • THR HOLD
    – Thrust levers remain in existing position
    or where manually placed
  • N1
    – Autothrottle controls to the selected N1 thrust.
  • FLCH
    – Autothrottle controlling to a max thrust during
    climb, and to a minimum thrust during descent.
  • GA
    – Autothrottle controlling to a max thrust to maintain
    a cilmb rate of >/= 2000 fpm. If both FDs and AP
    are off, autothrottles control to a GA thrust subject
    to flap and VMO limit speeds.
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12
Q

FedEx 767 - Autoflight

Explain A/T “SPD” mode on the FMA:

A
  • SPD

- - Control Thrust to maintain Speed

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13
Q

FedEx 767 - Autoflight

Explain A/T “IDLE” mode on the FMA:

A
  • IDLE
      • Is reducing or has reduced to idle
      • May engage in a VNAV descent… will after FLARE
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14
Q

FedEx 767 - Autoflight

Explain A/T “THR HOLD” mode on the FMA:

A
  • THR HOLD
    – Thrust levers remain in existing position
    or where manually placed
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15
Q

FedEx 767 - Autoflight

Explain A/T “N1” mode on the FMA:

A
  • N1

- - Autothrottle controls to the selected N1 thrust.

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16
Q

FedEx 767 - Autoflight

Explain A/T “FLCH” mode on the FMA:

A
  • FLCH
    – Autothrottle controlling to a max thrust during
    climb, and to a minimum thrust during descent.
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17
Q

FedEx 767 - Autoflight

Explain A/T “GA” mode on the FMA:

A
  • GA
    – Autothrottle controlling to a max thrust to maintain
    a cilmb rate of >/= 2000 fpm. If both FDs and AP
    are off, autothrottles control to a GA thrust subject
    to flap and VMO limit speeds.
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18
Q

FedEx 767 - Autoflight

What are the Roll Modes on the FMA?

A

Roll modes on the FMA:

  • LNAV
    – Activated when in position to turn onto the
    active route leg.
    – Immediate activation if within 2.5 miles
    of the active leg.
  • HDG SEL
    – The HDG SEL button was pressed on the MCP
  • HDG HOLD
    – When turning, selected heading is held upon
    reaching
  • LOC
    – Localizer is captured when within range and
    within 120 degrees of localizer course.
  • B/CRS
    – Similar to LOC, except tracks on the inbound
    course
  • TO
    – Annunciates after switching a FD switch on
    after both FD switches were off.
    – TO roll and pitch guidance become active
    upon liftoff
  • GA
    – Arms in flight with flaps out of “UP” or with
    glidscope capture
    – No annunciation for a GA armed in flight.
    (although the ref thrust changes to
    “GA” (N1 guage)
  • ROLLOUT
    – Displayed below 1500’ radio altitude
    – Activates at 5’ radio altitude
    – After touchdown, AFDS uses rudder and
    nosewheel steering to maintain the airplane
    on the LOC centerline
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19
Q

FedEx 767 - Autoflight

Explain Roll mode “LNAV” on the FMA:

A
  • LNAV
    – Activated when in position to turn onto the
    active route leg.
    – Immediate activation if within 2.5 miles
    of the active leg.
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20
Q

FedEx 767 - Autoflight

Explain Roll mode “HDG SEL” on the FMA:

A
  • HDG SEL

- - The HDG SEL button was pressed on the MCP

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21
Q

FedEx 767 - Autoflight

Explain Roll mode “HDG HOLD” on the FMA:

A
  • HDG HOLD
    – When turning, selected heading is held upon
    reaching
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22
Q

FedEx 767 - Autoflight

Explain Roll mode “LOC” on the FMA:

A
  • LOC
    – Localizer is captured when within range and
    within 120 degrees of localizer course.
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23
Q

FedEx 767 - Autoflight

Explain Roll mode “B/CRS” on the FMA

A
  • B/CRS
    – Similar to LOC, except tracks on the inbound
    course
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24
Q

FedEx 767 - Autoflight

Explain Roll mode “TO” on the FMA:

A
  • TO
    – Annunciates after switching a FD switch on
    after both FD switches were off.
    – TO roll and pitch guidance become active
    upon liftoff
25
Q

FedEx 767 - Autoflight

Explain Roll mode “GA” on the FMA:

A
  • GA
    – Arms in flight with flaps out of “UP” or with
    glidscope capture
    – No annunciation for a GA armed in flight.
    (although the ref thrust changes to
    “GA” (N1 guage)
26
Q

FedEx 767 - Autoflight

Explain Roll mode “ROLLOUT” on the FMA:

A
  • ROLLOUT
    – Displayed below 1500’ radio altitude
    – Activates at 5’ radio altitude
    – After touchdown, AFDS uses rudder and
    nosewheel steering to maintain the airplane
    on the LOC centerline
27
Q

FedEx 767 - Autoflight

What are the Pitch modes on the FMA?

A

FMA Pitch modes:

  • TO
  • GA
  • VNAV SPD
  • VNAV PTH
  • VNAV ALT
  • V/S
  • ALT CAP
  • ALT HOLD
  • G/S
  • FLARE
28
Q

FedEx 767 - Autoflight

Explain Pitch mode “TO” on the FMA:

A
  • Activated on the ground by turning either FD switch on.
  • Provides a 8 degree pitch on the FD pitch bar.
  • After T/O, AFDS commands a pitch attitude to
    maintain greater of V2 + 15 or liftoff speed + 15.
    – If current airspeed remains above target speed for
    5 seconds, target resets to current speed, up to a
    max of V2 + 25 kts.
29
Q

FedEx 767 - Autoflight

Explain Pitch mode “GA” on the FMA:

A
  • After reference thrust changes from T/O to CLIMB, GA arms whenever flaps are out of “UP”, or the glide slope captures.
  • GA displays on the Primary EICAS display N1 area.
  • When a GA is initiated, the target speed is the IAS/MACH window speed or current airspeed, whichever is higher.
  • If speed increases and remains above the initial target airspeed for 5 seconds, target airspeed resets to current airspeed to a max of IAS/MACH window + 25 kts.
  • If airspeed at initiationo f go-around is > IAS/MACH window + 25 kts, that speed is maintained.
30
Q

FedEx 767 - Autoflight

Explain Pitch mode “VNAV SPD” (in white) on the FMA:

A

When initially pushing the VNAV switch on the MCP, VNAV provides pitch commands to maintain the FMC computed airspeed path.

31
Q

FedEx 767 - Autoflight

Explain Pitch mode “VNAV SPD” (in green) on the FMA:

A
  • When VNAV SPD is green, (active) the AFDS maintains the CDU Climb/Descent speed or the speed displayed on the PFD.
32
Q

FedEx 767 - Autoflight

Explain Pitch mode “VNAV PTH” on the FMA:

A
  • The AFDS maintains FMC altitude or descent path using pitch commands. For unintered headwinds, thrust may increase to maintain the VNAV path.
33
Q

FedEx 767 - Autoflight

Explain Pitch mode “VNAV ALT” on the FMA:

A
  • VNAV ALT displays when there is a conflict between the MPC selected altitude and the descent profile altitude. Such as, when you cross the descent point and the MCP altitude is still set at cruise altitude.
34
Q

FedEx 767 - Autoflight

Explain Pitch mode “VS” on the FMA:

A

Pressing the V/S button opens the V/S window, as well as the IAS/MACH window.

35
Q

FedEx 767 - Autoflight

Explain Pitch mode “ALT CAP” on the FMA:

A

A transition interval change when reaching MCP altitude from V/S, FLCH, or VNAV climb or descent.

36
Q

FedEx 767 - Autoflight

Explain Pitch mode “G/S” (green) on the FMA:

A

The AFDS is following the ILS Glide Slope.

37
Q

FedEx 767 - Autoflight

Explain Pitch mode “FLARE” on the FMA:

A

Armed with autoland. Displays below 1500’ radio altitude. Activates during autoland at 45’ radio altitude. Deactivates at touchdown, allowing the nose to smoothly lower to the runway.

38
Q

FedEx 767 - Autoflight

Explain Pitch mode “FLARE” on the FMA:

A
  • Armed with autoland. (When “Land 3” or “Land 2”
    annunciates.)
  • Displays below 1500’ radio altitude.
  • Activates during autoland at 45’ radio altitude.
  • Autothrottle retards to Idle at 15’ radio altitude.
  • Idle replaces speed autothrottle mode annunciation.
  • Wings leveled when rollout mode engaged.
  • APs start lowering nose wheel to runway at five feet
    radio altitude plus two seconds with pitch attitude
    less than two degrees.
  • Deactivates at touchdown, allowing the nose
    to smoothly lower to the runway.
39
Q

FedEx 767 - Autoflight

(T/F): TO is a Flight Directory only function and can only be engaged on the ground.

40
Q

FedEx 767 - Autoflight

How do you know your Flight Director and TO mode have been turned on/activated?

A

TO TO in the Pitch and Roll windows of the FMA and “FLT DIR” displayed just below the FMA on the PFD.

41
Q

FedEx 767 - Autoflight

Describe the displays and TO mode process during takeoff, prior to 80 knots:

A

TO mode, prior to 80 knots:

  • Pitch command = 8 degrees up.
  • Roll command = wings level
  • Autothrottle engaged by Capt pressing THR switch.
  • Thrust levers auto advance to selected TO power.
  • FMAs display:
      • N1 for Autothrottle mode
      • TO for Pitch mode
      • TO for Roll mode
42
Q

FedEx 767 - Autoflight

What happens in TO mode at 80 knots?

A

Autothrottle mode annunciation changes from “N1” to “THR HLD” on the FMA.

43
Q

FedEx 767 - Autoflight

What transpires during lift-off in TO mode?

A

TO mode at lift-off:

  • Pitch command greater of V2+15 or liftoff speed +15.
  • If Eng Fail on ground, target speed is V2 or airspeed
    at liftoff, whichever is greater.
  • Roll command maintains ground track.
44
Q

FedEx 767 - Autoflight

What transpires after lift-off in TO mode?

A

TO mode after lift-off:

  • FD TO modes terminated by:
    – Engaging an A/P in CMD
    or……
    – Selecting any other pitch mode
  • A/T remains in THR HLD until one of these:
    – A pitch mode selected
    – A A/T mode is selected
    – A thrust reference mode is selected
    …. A/T then sets climb thrust or selected ref thrust
45
Q

FedEx 767 - Autoflight

How can you ensure the most economical flying in the 767?

A

By remaining in LNAV or VNAV.

46
Q

FedEx 767 - Autoflight

When flying an approach with autopilot on, what causes the AFDS to arm the other two autopilot systems?

A

By pressing the APP switch on the MCP.

47
Q

FedEx 767 - Autoflight

Is it possible to capture a glideslope on approach without having already captured the localizer?

A

No. The AFDS inhibits the glide slope until the localizer is captured.

48
Q

FedEx 767 - Autoflight

What modes can you use to descend on a localizer?

A
  • VNAV
  • FLCH
  • V/S
49
Q

FedEx 767 - Autoflight

What is the max angle from the localizer course the airplane can be and still capture the course?

A

120 degrees

50
Q

FedEx 767 - Autoflight

(T/F): The FLARE mode can be used with single autopilot operations…

51
Q

FedEx 767 - Autoflight

When does “ROLLOUT” arm?

A

When “LAND 3” or “LAND 2” annunciate. (approx 5’ radio altitude”

52
Q

FedEx 767 - Autoflight

Cat 3: When does “ROLLOUT” arm?

A

When “LAND 3” or “LAND 2” annunciate. (approx 5’ radio altitude”

53
Q

FedEx 767 - Autoflight

Cat 3: When does “ROLLOUT” engage?

A

At approx 5’ radio altitude.

54
Q

FedEx 767 - Autoflight

Cat 3: (T/F): “ROLLOUT” replaces the LOC roll FMA annunciation…

55
Q

FedEx 767 - Autoflight

Cat 3: When does ROLLOUT disengage?

A

When either of the following occur:

  • The airplane comes to a full stop.
  • The autopilots are disengaged.
56
Q

FedEx 767 - Autoflight

When does the Auththrottle IDLE mode disengage?

A

When the autothrottle is turned off after landing. (When either thrust lever is set in the “Reverse Thrust” position.

57
Q

FedEx 767 - Autoflight

What takes place when pushing the GA switch with the Flight Directors not on?

A

The Flight Director Bars are displayed.

58
Q

FedEx 767 - Autoflight

What takes place when pushing the GA switch when the flaps out of up or the GS captured?

A

GA reference on the N1 display
Roll and Pitch activate in “GA” on FMA
A/T adjusts thrust to maintain climb rate of 2000 fpm
Roll commands bank to maintain ground track
AFDS increases pitch to hold existing or MCP speed, whichever is higher.
** If flaps are 20 or less, thrust mode other than GA can be selected.

FedEx 767 Systems (3 decks)

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