1
Q
What does the automatic flight control system consist of?
A
Autopilot flight director system (AFDS)
Autothrottle system
2
Q
What controls the AFDS and A/T systems?
A
MCP and FMC
3
Q
What does the AFDS consist of?
A
3 autopilot flight director computers (AFDCs)
MCP
4
Q
What is a AFDC?
A
Autopilot flight director computer
5
Q
How many AFDCs?
A
3
6
Q
What does the AFDCs control?
A
FDs + APs
7
Q
Does the AFDS control the flight control surfaces directly?
A
No, through fly-by-wire flight control system
8
Q
When will rudder pedal movement disengage the autopilot?
A
Only when LAND 2 or LAND 3 annunciated
9
Q
When is the force required to disengage autopilot highest
A
When autoland is engaged (LAND 2 LAND 3)
10
Q
How is degradation of a mode displayed?
A
Amber line though the mode annuniciations
11
Q
When does attitude stabilizing engage?
A
In all degraded modes
12
Q
What is attitude stabilizing mode based on?
A
Inertial data
13
Q
Above 200’ RA when will there be no indication of attitude stabilizing mode?
A
When active for less than 20 sec. for LOC
When active for less than 15 sec. for GS
14
Q
Will the autopilot disconnect for an autopilot system degradation mode?
A
Above 500’ YES
Below 500’ NO
15
Q
Does the FLT DIR also provide attitude stabilizing in AFDS degraded mode?
A
Yes,
Very similar to the autopilot.
FD bars will remove
16
Q
What will the AFDS do in case of ILS signal interference?
A
Remain in attitude stabilizing mode based on inertial data
17
Q
What will cause the FD bars to disappear?
A
Failure of either pitch or roll
Stall protection
Overspeed protection
18
Q
What is ASA?
A
Autoflight Status Annunciation
19
Q
What here is the ASA located and what can it display?
A
Green:
FLT DIR
A/P
LAND 3
Green with white triangles:
LAND 2
Amber:
NO AUTOLAND
20
Q
What does LAND 3 mean?
A
3 Autopilots are engaged and operating normally for an automatic landing
21
Q
What does LAND 2 mean?
A
AFDS redundancy is reduced
In some cases only 2 autopilots available
22
Q
What does NO AUTOLAND mean?
A
AFDS is unable to make an automatic landing
23
Q
What does fail operational (LAND 3) mean in terms of redundancy?
A
A single fault cannot prevent the autopilot system from making an automatic landing
24
Q
What does fail passive (LAND 2) mean in terms on redundancy?
A
A single fault cannot cause a significant deviation from the flight path
25
Can the autoland status change to LAND 2 below 200'?
No,
only NO AUTOLAND changes below 200'
26
Name the PFD AFDS status annunciations from left to right
Autothrottle
Roll
Pitch
27
What are the Autothrottle modes?
(5)
THR
THR REF
IDLE
HOLD
SPD
28
What does A/T THR mode do?
Applies thrust to maintain climb/descent rate required by the pitch mode
29
What does A/T THR REF mode do?
Thrust set to the reference thrust limit displayed on EICAS
30
What does A/T IDLE mode do?
Displays while the autothrottle moves TL's to idle
Followed by HOLD
31
What does A/T HOLD mode do?
TL autothrottle servos are inhibited.
Pilot can set TL's manually
32
What does A/T SPD mode do?
A/T maintains command speed
Speed set by MCP/FMC
33
Will the A/T SPD mode exceed operating limits?
No, neither the speed limits for airplane configuration or ref. thrust limits
34
What will be in front of the SPD mode indication when OEI?
L or R displaying the active TL
35
What are the AFDS Roll modes ?
(7)
LNAV
HDG
TRK
ATT
LOC
TO/GA
ROLLOUT
36
When does LNAV activate?
Above 50 '
In position to turn onto active route leg
Immediate activation within 2.5nm
(in flight)
37
What does TRK SEL do?
Airplane turns to or maintains the track set in the MCP heading/track window
TRK HOLD works like HDG HOLD just with track
38
Within how many degrees must the localizer be to capture?
120 degrees
39
ATT - bank angle 5 to 30 degrees?
AFDS holds the bank
40
ATT - bank angle less than 5 degrees?
Rolls wings level
41
ATT - above 30 degrees bank?
Rolls back to 30 degrees bank
42
TO/GA - ground?
Either FDs ON or by pushing TO/GA switch with FDs OFF and speed +80 kts
TO/GA roll guidance active at lift-off
43
When is TO/GA armed in flight?
Flaps out of up
or
GS capture
44
How is TO/GA activated in flight?
Pushing a TO/GA switch
45
What Roll mode does TO/GA guidance provide?
Present Ground Track at mode engagement
46
When is ROLLOUT armed?
Displayed below 1500' RA
47
When does ROLLOUT activate?
Below 2 feet
48
Initial TO/GA FD pitch command
8 degrees up
49
When does TO/GA pitch guidance become active?
@ lift-off
50
After lift-off what pitch attitude does the AFDS command?
V2+15 kts or airspeed at rotation+15 kts
whichever is greater
if current airspeed exceed target spd for 5 sec.
-> current speed or V2+25 kts whichever is less
MCP speed when changed to a speed greater than the target speed
51
Speed when Go-Around is initiated?
MCP speed or current speed (weh)
Max MCP speed+25 kts
52
When does VNAV activate?
@ 400 feet
53
When is FLARE armed during autoland?
Below 1500' RA
54
When is FLARE active during autoland?
Between 60 and 40 feet RA
55
When does FLARE deactivate?
at touchdown and smoothly lowers nosewheel to the rwy
56
What controls the A/T?
MCP (speed and modes)
CDUs ( FMC ref thrust limit selection)
57
Can the A/T be operated with FDs OFF and no autopilot?
Yes
58
What mode does the A/T transition to with FDs OFF and no AP?
SPD mode
A/T maintains IAS/MACH window speed
59
When does the A/T transition to IDLE during a manual landing?
Active A/T mode: SPD or pitch mode VNAV/FLCH SPD
25 feet
60
Can the A/T provide stall protection when armed but not active (mode is blank)
Yes it does provide stall protection in armed mode
61
For which pitch modes will the A/T automatically activate
(9)
ALT
V/S, FPA
VNAV ALT/PTH/SPD
FLCH
GS
TO/GA
62
Under which conditions will the A/T activate for the applicable pitch modes?
(3)
Speed less than FMC value for 1 sec +
Thrust is below thrust ref. limit +
+400' Baro after T/O
+100' RA on APP
63
If current pitch mode is ALT, V/S, FPA, GS or VNAV ALT or there is no active pitch mode what will the A/T engage in and which speed will it maintain?
A/T engages in SPD mode
Maintains min maneuvering speed or MCP speed (weh)
64
In which mode does the A/T NOT reposition the TL after manual positioning?
in HOLD mode
65
When does the A/T automatically disconnect?
(4)
Fault in active mode
Either TL Rev thrust
TL overridden in manual landing after A/T had begun to retard the TLs
Both engines shutdown
66
What are the FMAs when FD is turned ON during preflight?
FLT DIR
Pitch and Roll
-> TO/GA
67
By what speed must the TO/GA switch be pushed for Takeoff?
Before 50 kts
or the A/T can't be activated before 400'
68
What happens with A/T FMA at 80 kts during Takeoff?
It changes from
THR REF -> HOLD
69
What happens when you push a TO/GA switch above 80 kts during Takeoff?
LNAV and VNAV disarms
TO/GA cannot be activated between 50 kts and 400'
70
What is the pitch command if an engine failure on the ground?
V2 or airspeed at liftoff if greater
Roll command ground track
71
If an engine failure occurs after lift-off what would pitch target speed be?
V2 if speed is below V2
Existing speed if between V2 and V2+15
V2+15 if speed is above this speed
72
What happens if TO/GA is pushed after lift-off?
It removes Derates and ATM
A/T in HOLD -> activates in THR REF
73
What speed does the pitch command at acceleration height?
5 kts below takeoff flaps placard speed
74
When is TO/GA mode terminated during Takeoff?
By selecting any other pitch or roll mode
or LNAV/VNAV modes
75
What are the AFDS bank angle limits with OEI?
15 degrees - V2+10 kts
25 degrees @ V2 +25 kts (LNAV engaged or HDG SEL, TRK SEL, Bank limit in AUTO)
Bank angle limit depends on airspeed and is independent of the BANK LIMIT selector value on MCP
76
Automatic Flight Takeoff Profile?
THR REF - TO/GA - TO/GA (Push TOGA)
HOLD - TO/GA - TO/GA (80 kts)
HOLD - LNAV - TO/GA (50')
HOLD - LNAV - TO/GA (AP)
THR - LNAV - VNAV SPD (400')
77
Can the GS capture before the LOC?
No GS capture is inhibited before LOC capture
78
What does the Runway alignment do?
Reduces crab angle during crosswind approaches
Compensates for Single engine approach
79
When does RWY alignment occur?
+ 10 degrees crab -> 500' AGL
5-10 degrees crab -> 500 and 200'
less than 5 degrees crab -> 200'
80
When will the AFDS introduce sideslip if engine fails prior approach?
at 1300' AGL
This establishes wings level
81
When will AFDS introduce sideslip if engine fails during approach and below 1300'
When engine failure is detected
82
Name the FLARE , IDLE and ROLLOUT RAs
Flare - 40-60 feet
IDLE - 25-50 feet
ROLLOUT - 2 feet
83
In case of Go-Around what does the A/T command?
THR to establish min climb rate of 2000 fpm
84
Go-Around and second push of TO/GA switch?
Full go-around thrust
85
Target speed in case of GO-Around?
if current airspeed remains above target speed for 5 sec. this becomes new target speed
To max MCP speed + 25 kts
86
What should would be needed if executing a missed approach OEI and no TAC when LNAV engages?
During LAND 2 or LAND 3 automatic LNAV activation causes disengagement or autopilot rudder control.
Manual control may be required to prevent large roll and yaw.
87
What does the MCP speed automatically set after TO/GA level-off when ALT CAP or V/S or FPA is active?
Flap placard speed -5 kts
250 kts if flaps up
MCP speed if entered after T0/GA was pushed
88
TO/GA termination below 400' RA?
AP OFF
+
FDs OFF
or LNAV activation
above 400' RA a different pitch or roll mode can be selected
89
In which mode does Flight Envelope Protection exist?
In both manual and automatic flight
90
What envelope protection is provided with the autopilot?
Minimum speed/stall
Overspeed
Bank angle
91
How is envelope protection shown in F/D mode?
(failure, min speed, overspeed, bank angle)
Mode failure indicated by removal of the bar associated with it
Min speed, stall and overspeed only provide indication of exceedance, not command of flight controls
For Bank angle protection control wheel forces attempts to resolve the exceedance
92
How will the autopilot show envelope protection/exceedance?
Failure indicated by an amber line through the affected mode
AUTOPILOT caution EICAS for all pitch modes except FLCH + TO/GA
Autopilot may command to resolve the exceedance
93
What is VCMIN?
Critical minimum autothrottle control speed
It is the minimum speed the aircraft would normally be operated at in different configurations.
If airspeed is slowed to 8 kts below VCMIN, A/T will automatically engage and increase thrust.
It will activate prior to stall protection activation
94
Will VCMIN activate in manual flight?
No it is available when autopilot is engaged
95
Which protection will activate first, the VCMIN or stall protection?
VCMIN will activate before stall protection
96
Where does the A/T system receive information for the VCMIN?
Other aircraft systems and sensors
97
Will there be a mode failure for minimum speed when in FLCH or TO/GA pitch modes?
No, no mode failure.
FLCH and TO/GA will control airspeed to a minimum speed which is above a minimum speed condition
98
In which autopilot pitch mode will stall protection be available?
(5)
ALT, FPA, V/S. VNAV or GS
99
What will happen prior to activation of stall protection?
Approaching stick shaker a mode failure will alert of imminent stall.
If stall protection is activated disconnecting autopilot or engaging another pitch mode will clear the mode failure
100
When does stall activation activate?
Slightly below stick shaker speed
101
How is stall protection characterized?
Autopilot command a reduction in pitch to reduce AOA
As AOA approaches stall protection control targe, pitch commands are gradually removed
102
Is stall protection available in TO/GA mode?
Yes, for windshear encounters
103
Will FLARE engaged during autopilot stall protection?
No, preventing increasing AOA
104
When is overspeed protection available with the autopilot?
All modes except G/S and TO/GA with flaps and gear up
Only in FLCH with flaps out of up
105
What are the indications to the crew of an overspeed condition?
EICAS Warning: OVERSPEED + aural alert siren
106
When will the EICAS OVERSPEED and aural alert warn the crew of an overspeed condition?
Prior to overspeed protection activation
VMO+5 kts or
Slightly above MMO
107
At which speed does Overspeed protection activate
VMO + 20 kts or
MMO + 0.03M
108
What speed attitude will the autopilot command for an overspeed protection?
VMO - 5kts or
MMO - 5 kts
109
What provides bank angle protection?
Primary flight control system
110
Is bank angle protection only available in automatic mode?
No, bank angle protection is available in manual and automatic mode
111
Is bank angle protection limited by the setting of the MCP bank angle limit selector?
No
112
What does bank angle protection use to determine if airplane will exceed 35 degrees of bank?
Measured bank angle and roll rate.
If exceedance occurs or is predicted bank angle protection will engage and provide control wheel forces to arrest roll rate and bring bank angle back within 30 degrees
113
Above max operating speed is bank angle protection still activated at 35 degrees bank?
No bank angle protection threshold is progressively reduced down to 20 degrees.
114
How long must the bank angle protection be activated with autopilot before a mode failure will occur?
4 seconds
115
Will F/D bars disappear for bank angle protection?
No,
116
What MCP function will disable bank angle protection?
The Autopilot Disengage Bar
117
EICAS Caution + Beeper
AUTOPILOT
Autopilot is operating in a
degraded mode. Active roll and/or
pitch mode may have failed, or the
autopilot has entered envelope
protection.
118
What modes does the AP engage in with both F/D OFF?
Roll = HDG HOLD or TRK HOLD
+ 5 degrees bank -> ATT
Pitch = V/S or FPA
119
Conditions of CLB/CON thrust switch?
Inoperative on ground and below 400' during Takeoff
Push:
2 Eng. changes thrust limit to FMC climb thrust
1 Eng. changes thrust limit to CON
120
A/T switch condition?
Above 400 ' with A/T armed activates appropriate A/T mode for selected AFDS pitch mode
Or if no pitch mode in SPD mode
121
In climb when does the speed change from IAS to MACH?
.84 Mach
122
In descent when does the speed change from MACH to IAS?
310 kts
123
FLCH mode when changing from TO/GA to FLCH what does IAS/MACH window show?
Highest value of current speed or selected speed
124
What does the A/T advance to when engaging FLCH?
Advances or retards thrust levers to provide
500 fpm V/S for each 1000' altitude change
125
What target time does the AFDS attempt to reach MCP selected altitude with available thrust when engaging FLCH?
Within 2 minutes
Otherwise A/T uses IDLE or CLB thrust to reach MCP altitude
126
What reference thrust limit change will appear with FLCH and OEI?
CON (automatically)
127
What will AUTO bank limit provide?
between 15-25 degrees depending on TAS (in HDG SEL or TRK SEL)
128
V/S range?
-8000 to +6000
129
FPA range?
-9.9 to +9.9 degrees
130
Will the ALT capture if V/S or FPA is set to zero?
No it will not
131
Is the altitude in the altitude window transmitted to ATC?
Yes
132
When does the ALT (intervention) push button descend with altitude window set below current cruise altitude? (DES NOW)
Within 50 NM of TOD
133
How can LOC capture be deactivated?
Roll mode other than VNAV
TO/GA
AP OFF + F/Ds OFF
Above 1500' (reverts to default roll mode)
134
Within how many degrees will the LOC and GS capture?
LOC 120 degrees
GS 80 degrees (of LOC course)
135
When can the approach mode be disarmed or deactivated for any status?
AP OFF + F/Ds OFF
136
How can you deselect APP mode capture (LOC + GS captured) ?
Selecting TO/GA
AP OFF + F/Ds OFF
137
TO/GA inhibit after touchdown parameters
During landing, the TO/GA switches are inhibited after touchdown or
when below 2 feet radio altitude for 3 seconds or more. If the landing is
discontinued, the TO/GA switches are enabled again above 5 feet radio
altitude.
B777F - FCOM - Systems
flashcards
Decks in class (17)
# Cards
-
B777F - Limitations26
-
Normal Procedures - Section 1110
-
Ch 1 - Airplane General31
-
Ch 2 - Air Systems49
-
Ch 3 - Anti-Ice, Rain28
-
Ch 4 - Automatic Flight137
-
Ch 5 - Communications1
-
Ch 6 - Electrical77
-
Ch 7 - Engines, APU90
-
Ch 8 - Fire Protection37
-
Ch 9 - Flight Controls161
-
Ch 10 - Flight Instruments0
-
Ch 11 - Navigation32
-
Ch 12 - Fuel59
-
CH 13 - Hydraulics24
-
Ch 14 - Landing Gear51
-
Ch 15 - Warning Systems0
