4 Automatic Flight

Question 1

C/O (change over switch) IAS/Mach display
- auto change over:
- underspeed
- overspeed
- blank when’
- display range

Answer 1

A - above FL260
U - “A”, select Vmin + 15kts to get rid of “A”
O - “8”, by selecting VMO or MMO limit, landing gear limit, flap limit
B - VNAV, FMC SPD, 2 ENG GA
D - 100 KIAS - VMO in 1 KIAS increment
.60M - MMO in 0.01 M increments

Question 2

n1 mode engages automatically:

depressing N1/SPEED
- will cause:

Answer 2

• engaging VNAV in climb
• engages LVL CHG (except first 2.5min after Takeoff)

D - A/T in arm MODE

Question 3

Speed mode engages automatically:

Answer 3

• ALT ACQ/HOLD engages
• V/S engages
• G/S capture occurs

Question 4

VNAV ARM CRITERIA

Answer 4

• valid flight plan has been entered
• performance data has been entered and executed
• both FD switches ON
• above 400’ SGL it will automatically engage

Question 5

VNAV TERMINATED

Answer 5

• selecting another pitch mode
• glideslope capture
• reaching end of LNAV route
• transition to G/S when G/S is armed
• crosstrack twice the RNP value during PTH DESCENT with active leg with database vertical angle and no LNAN engaged

Question 6

When pitch mode VNV SPD to ALT ACQ
- will:

Answer 6

during intermediate level off (not CRZ ALT) the autothrottle will targer IAS (in stead of MACH) even above automatic change over altitude. This could cause overspeed

Question 7

ALT DISPLAY
- range
- arming
- altitude upon power applied
VERTICAL SPEED DISPLAY
- range

Answer 7

0 to 50.000 feet in 100 feet increments. Rotating ALT SELECTOR will arm V/S. Displays previous selected altitude upon power applied

VSD
- range -7.900 to +6.000 feet/minute. >1000 f/min increments of 100 feet, <1000 f/min increments of 50 feet

Question 8

inhibited modes after G/S capture

Answer 8

ALT HOLD and LVL CHG

Question 9

ALTITUDE INTERVENTION
- push during VNAV Climb

Answer 9

• every push deletes lowest ALT constraint (from FMC)
• if MCP ALT above current FMC ALT, FMC cruise altitude will be only increased (not decreased) to MCP cruise altitude

Question 10

ALTITUDE INTERVENTION
- push during VNAV cruise

Answer 10

• if MCP set higher than FMC, FMC ALT will be the MCP ALT and aircraft will climb
• MCP ALT set to lower altitude, but at or above alt constraint and further than 50nm from TOD, the aircraft will descent with 1000 feet/min
• MCP ALT set to lower altitude and lower than als constraint and > 50nm will initiate a descent with 1000 feet/min until path intercept OR MCP ALT LEVEL OFF occurs

Question 11

ALTITUDE INTERVENTION
- push during VNV descent

Answer 11

• every push deletes highest alt constraint
• aircraft currently at alt constraint and MCP lower, deletion will allow aircraft to further descent

Question 12

FLYING VNV PTH and all altitude constraints deleted

Answer 12

VNV SPD

Question 13

LNAV ARMING CRITERIA

Answer 13

-origin RWY in flight plan
- active route entered in FMC
- track of first leg within 5 degrees of runway heading
- both FD’s ON
- LNAV selected prior to TOGA

Question 14

LNAV
-activated
- bank angle limits

Answer 14

activated at 50 feet RA
bank angle limited to 15 degrees < 200 feet
bank angle limited to 30 degrees > 200 feet

Question 15

LNAV engagement in flight
LNAV disconnect

Answer 15

Engagement:
- within 3nm
- within 90 degrees from track outside 3nm

Disconnect
- route disconuity
- end of route
- loss of capture criteria
- intercepting APP cours

Question 16

When LOC frequency selected, what will antennas do

Answer 16

VNF NAV radios automatically switch from tail to nose antenna

Question 17

bank angle selector
- for which modes
- all options

Answer 17

• for HDG SEL and VOR MODE
• 10,15,20,25,30

Question 18

DUAL AP operations
- when used

Answer 18

for approach and must BOTH be tuned to ILS and prior to 800’ RA

Question 19

APP MODE OPERSTIONS
- when does capture occurs

When app mode disengage

Answer 19

GS capture 2/5 dot below GS
LOC capture 1/2 dot deviation
LOC MUST be captured before GS can be captured’

D - TOGA, retuning VHF NAV, disengaging AP and Turning off FD

Question 20

CSW
- From CWS P automatically to
- From CWS R automatically to
- Push

Answer 20

P - ALT ACQ -> ALT HOLD when reaching selected altitude
R - VOR/LOC when course intercepted

P - when control pressure released: A/P holds existing attitude. If ailerons pressure released with 6 degrees or less bank: the A/P rolls wings level and maintains HDG. HDG hold feature inhibits:
- below 1500’ with gear down
- after LOC capture in APP mode
- after VOR capture with TAS at or above 250 KTS

Question 21

AUTOPILOT
- A/P disconnect switch: tone
- A/P disengage light 🛑 steady

Answer 21

Tone sounds for approximately 2 seconds

A/P 🛑 steady:
- stab out of trim below 800’m RA on Dual approach
- ALT ACQ mode inhibited during A/P GA if stabilizer not trimmed for single A/P
- Disengage light test switch in pos 2
- automatic ground system test fails;

Question 22

Autothrottle disengage light
- A/T flashing 🟧

Answer 22

A/T flashing 🟧: indicates A/T airspeed error under following conditions:
- in flight
- flaps not up
- air speed differs from commanded value by +10 or -5 its and is not approaching commanded value

Question 23

NEW FMA illuminate time

Answer 23

10 seconds

Question 24

AUTOPILOT ENGAGEMENT CRITERIA

Answer 24

• no force to control wheel applied
• stab trim autopilot is at NORMAL

Question 25

One IRU INOP, this will cause:

Answer 25

Yaw damper will disconnect when A/P in use

Question 26

Dual channel A/P OPS
- criteria

Answer 26

Only with 2 generators are powering the busses

Question 27

FCC: amount of radio altimeters
- what if one INOP with A/P on

Answer 27

2 independent radio altimeters
- A/P disconnects after 2 sec

Question 28

Independent F/D operations.
- requirements:

Answer 28

When A/P is OFF AND:
- app mode with LOC/G/S capture
- GA more engaged below 400’ RA
- TO mode engaged below 400” RA

Question 29

FAIL OPERATIONAL AUTOLAND
- LAND 3
- LAND 2
- failure below alert height and still capable of continuing the autoland + rollout

Answer 29

LAND 3: 2 autopilots, three inertial sources and associated sensors are operating normally for an automatic landing + rollout
LAND 2: failure occurred above Alert height and redundancy is reduced: but the autoland Is still capable of making auto land + rollout

• land 3 will remain displayed and the failure (autoland downgrade) will be shown below 40 KIAS

Question 30

TO/GA ENGAGEMENT
TAKEOFF
- both FD OFF
GA

Answer 30

FD OFF: press after 80 Kias below 2000’ AGL and prior to 150 seconds after lift off

FD ON: AFDS will shown -10 pitch until 60 Kias, than +15 until sufficient climb rate than v2+15
GA:
- inflight below 2000 feet
- inflight above 2000 feet with flaps not up or G/S captured

Question 31

FLARE
ROLLOUT
BOTH DUAL A/P APP
AP DISENGAGE

Answer 31

FLARE: arms below 1500’ and engages below 50’ RA, recedes thrust at 27’ RA
ROLLOUT: arms below 1500’ and 2 sec after touchdown A/T disengages

AP disengaged will end rollout guidance

Question 32

Autothrottle ON
- levers difference
A/T disengage when:

Answer 32

L - 1 knob from each other
A- thrust levers separated > 10 degrees OR significant thrust difference along with control wheel roll input of 10 degrees or more

Question 33

Pressing toga
- 84 KIAS
- ENG FAIL SPEED v2
- second press toga

Answer 33

84 - THR HLD
E - v2 - v2+20 KIAS
S - above 800’ full GA thrust “GA”

Question 34

Climbing (VNV PTH or V/S) OR Descending (V/S)

Answer 34

aircraft automatically changes to LVL CHG when close to VMIN, VMO,MMO

Question 35

MIN SPEED REVERSION NOT AVAILABLE

Answer 35

A/T OFF, AFDS IN ALT HOLD or AFTER G/S capture, VNAV PTH in level segment