B737 Automatic Flight

Front 1

At what FL does the IAS/MACH display automatically change over?

Back 1

About FL260

Front 2

What is MCP Speed Condition Symbol?

Back 2

If a commanded speed is above or below speed limitations, a symbol is displayed on the IAS/MACH display.

Front 3

What is the MCP Speed Condition Symbol for underspeed and what condition will cause it to show?

Back 3

A flashing "A". It will show when commanded speed is below minimum speed.

Front 4

What is the MCP Speed Condition Symbol for overspeed and what condition will cause it to show?

Back 4

A flashing "8". It will show when commanded speed is above Vmo/Mmo, landing gear, or flaps limit speed.

Front 5

What conditions cause the IAS/MACH display to blank?

Back 5

-VNAV engagement, -A/T in FMC SPD, -during a two engine AFDS go around.

Front 6

When does N1 Mode engage automatically?

Back 6

-Engaging LVL CHG in climb (except for inhibit period 2 1/2 minutes after takeoff), -Engaging VNAV in climb

Front 7

When does Speed mode engage automatically?

Back 7

-ALT ACQ or ALT HOLD engages, -V/S engages, -GS capture

Front 8

How does the A/T behave in comparison to the N1 limit if it is in AUTO or has been set manually on the Engine Display Control Panel?

Back 8

In AUTO, the A/T will not set thrust above the N1 limit. In manual, it has no affect on the A/T. It is meant for manual operation of the thrust levers.

Front 9

What criteria must me met for VNAV to be armed on the ground?

Back 9

-a valid flight plan must be entered, -performance data has been entered and executed, -both flight directors have been switched on

Front 10

When does VNAV guidance become active?

Back 10

400 ft AGL

Front 11

Will VNAV stay engaged if you are not in LNAV?

Back 11

Yes, but it will disengage if cross track deviation exceeds twice the RNP

Front 12

Can you use VNAV if performance initialization is not complete?

Back 12

No

Front 13

Can you go to LVL CHG after glideslope capture?

Back 13

No

Front 14

What altitude is the MCP Altitude referenced to?

Back 14

CA for A A/P and FD, FO for B A/P and FD

Front 15

When will the ALT HOLD switch light illuminate/extinguish?

Back 15

Illuminates when ALT HOLD switch is pressed and when in ALT HOLD mode and MCP altitude is changed. Extinguishes when reaching MCP altitude.

Front 16

What happens if the MCP altitude is changed during ALT ACQ?

Back 16

V/S mode is engaged

Front 17

What criteria has to be met for LNAV to be armed on the ground?

Back 17

-Runway in flight plan, -Active route in FMC, -Track of first leg within 5 degrees of runway heading, -LNAV selected prior to TOGA

Front 18

When does LNAV guidance become active?

Back 18

50 ft AGL

Front 19

What is the criteria for LNAV engagement in flight?

Back 19

-Active route in FMC, -If outside 3 NM of active route, must be with 90 degrees of course and intercept before active waypoint

Front 20

What would cause LNAV to disconnect?

Back 20

-End of active route, -Reaching route discontinuity, -Reaching selected course in VOR/LOC or APP, -Selecting HDG SEL, -Loss of capture criteria

Front 21

What are the bank angle limits in LNAV?

Back 21

Below 200 ft, 8 degrees. Above 200 ft, 30 degrees

Front 22

What FMA roll modes can be engaged while intercepting a VOR/LOC course?

Back 22

-HDG SEL, -LNAV, -CWS R if an autopilot is engaged

Front 23

Which VHF NAV receiver is used during VOR/LOC engagement?

Back 23

A autopilot and Captains FD use VHF NAV 1, B autopilot and FO's FD use VHF NAV 2

Front 24

Do the Captain's and FO's VHF NAV's and courses need to be the same during VOR/LOC engagement?

Back 24

Yes, different frequencies and/or courses can cause disagreement and affect AP operation

Front 25

Which antenna does VOR/LOC use?

Back 25

VOR uses tail antenna. If LOC frequency is tuned, VHF NAV radios automatically switch to nose antenna if VOR/LOC is armed or engaged.

Front 26

What is one reason why LOC mode was inhibited?

Back 26

Automatic switching to nose antenna did not occur

Front 27

Is LOC backcourse tracking available?

Back 27

No

Front 28

What modes does the Bank Angle Selector work for?

Back 28

HDG SEL or VOR

Front 29

How many VHF NAV receivers must be tuned to a LOC frequency before APP mode can be engaged?

Back 29

One. When only one is selected, onside AFDS is enabled for guidance and operation.

Front 30

How man VHF NAV receivers must be tuned for dual AP operation?

Back 30

Both.

Front 31

What roll modes can the LOC be captured in?

Back 31

-HDG SEL, -LNAV, or CWS R

Front 32

When APP mode is armed and at LOC capture, what do you see on the DU?

Back 32

-SINGLE CH annunciates in A/P status, -VOR/LOC engages and shows in FMA

Front 33

After LOC and GS capture, what does pressing the APP switch do?

Back 33

Nothing, it extinguishes indicating that it cannot be deselected

Front 34

How can the APP mode be disengaged after LOC and GS capture?

Back 34

-Pushing a TOGA switch, -Disengaging AP(s) and turning off both FD, -Retuning the VHF NAV receiver

Front 35

What happens to the AFDS in single AP if there is manual pilot input to the controls after LOC or LOC and GS capture?

Back 35

For FEQ and earlier, it reverts to CWS and APP mode resets (engaged and armed blanks). For FER and later, AP disconnects and active mode remains engaged

Front 36

What happens to the AFDS in dual AP if there is manual pilot input to the controls after FLARE ARM?

Back 36

AP disconnects

Front 37

Can the A/P operate in a combination of CMD and CWS?

Back 37

Yes

Front 38

What happens if you engage the second AP when not in APP mode?

Back 38

Second AP engages and first AP disconnects

Front 39

When would pushing or being in CMD cause CWS to engage?

Back 39

-If no pitch or roll mode is selected, -If a pitch or roll mode is deselected, -For FES and earlier, when pitch or roll overridden by control column force

Front 40

Does the AP follow FD commands when in CWS?

Back 40

No, pitch and roll controlled by pilot

Front 41

What happens when a pilot releases controls when in CWS?

Back 41

AP holds existing attitude. If bank is 6 degrees or less, AP rolls wings level and holds heading

Front 42

When is the heading hold feature inhibited when in CWS?

Back 42

-Below 1500 RA with the gear down, -After LOC capture in APP mode, -After VOR capture when TAS 250 kts or less

Front 43

What happens when you pull down on the AP disengage bar?

Back 43

-Exposes yellow background, -Disengages both AP's, -Prevents AP engagement

Front 44

What does the Master (MA) Flight Director Indicators indicate?

Back 44

If FD switch is on, then: -Illuminated means related FCC is controlling the FD modes, -Extinguished means opposite FCC is controlling the FD modes, -Both lights illuminated means each FCC is controlling each FD modes

Front 45

Can you have the AP on and FD off?

Back 45

Yes

Front 46

Does turning the FD switch ON automatically display the FD?

Back 46

No, a pitch or roll mode has to be engaged

Front 47

How many times must you press the AP and AT disconnect switches in order for the lights and tones to stop flashing and sounding?

Back 47

Twice if manually disconnected, once if automatically disconnected

Front 48

What does a flashing red A/P Disengage Light mean?

Back 48

-AP has disengaged, -For FEW and later, an attempt to engage AP was made but was unsuccessful

Front 49

What does a steady red A/P Disengage Light mean?

Back 49

-Stab out of trim below 800 ft RA on dual AP approach, -ALT ACQ mode inhibited during AP GA if stab not trimmed for single AP operation, -light test switch held in position 2, -auto ground system tests fail

Front 50

What does a flashing amber A/P Disengage Light mean?

Back 50

A/P automatically switched to CWS while in CMD

Front 51

What does a steady amber A/P Disengage Light mean?

Back 51

Light test switch held in position 1

Front 52

What does a flashing read A/T Disengage Light mean?

Back 52

AT has disengaged

Front 53

What does a steady red A/T Disengage Light mean?

Back 53

Test switch held in position 2

Front 54

What does a flashing amber A/T Disengage Light mean?

Back 54

AT airspeed error: -In flight, -Flaps not up, -Airspeed +10/-5 and not approaching command speed

Front 55

What does a steady amber A/T Disengage Light mean?

Back 55

Test switch held in position 1

Front 56

What does the STAB OUT OF TRIM light mean?

Back 56

Autopilot not trimming stabilizer properly

Front 57

Does the STAB OUT OF TRIM light come on with the AP disengaged?

Back 57

No

Front 58

What does a white A/T LIM on the thrust mode display mean?

Back 58

The FMC is not providing the AT system with N1 limit values, it is using a degraded value from the EEC

Front 59

Does the AT work when the EEC's are in the alternate mode?

Back 59

Yes

Front 60

What would cause automatic disengagement of the AT?

Back 60

-AT system fault, -Two seconds after touchdown, -Thrust levers become separated by more than 10 degrees, -Significant thrust difference with control wheel roll input of 10 degrees

Front 61

Which Flight Control Computer controls the pitch and roll hydraulic servos?

Back 61

There are two FCC's, A and B, each controls their respective hydraulic (A and B) servos

Front 62

If an MCP mode switch is active, how do know if deselecting it is prohibited?

Back 62

The light is extinguished

Front 63

What conditions have to be met before an AP can be engaged?

Back 63

-No force is being applied to the control wheel, -The STAB TRIM AUTOPILOT cutout switch is in NORMAL

Front 64

What would cause the AP to disengage?(Card 1)

Back 64

-Pushing either AP disengage switch, -Column force override, -Pushing either TOGA switch when single AP and: below 2000 ft RA or with flaps not up or GS engaged, -Pushing either TOGA switch after touchdown with both AP's in CMD, -Pushing an illuminated A/P ENGAGE switch, -Pulling the AP DISENGAGE bar down

Front 65

What would cause the AP to disengage?(Card 2)

Back 65

-Activating either pilots trim switch, -Moving the STAB TRIM AUTOPILOT cutout switch to CUTOUT, -Either left or right IRS failure or FAULT, -Loss of electrical power on engaged AP, -Loss of sensor input which prevents proper operation of AP and mode, -Loss of respective hydraulic system pressure

Front 66

Do the radio altimeters affect the FCC's?

Back 66

Yes, if one of the radio altimeters fails the AP will disconnect two seconds after LOC and GS capture

Front 67

What conditions would cause each FCC to control their respective FD?

Back 67

Neither AP in CMD, both FD's on, and one of the following: -APP mode engaged with LOC and GS capture, -GA mode engaged and below 400 ft RA, -TO mode engaged and below 400 ft RA

Front 68

What conditions have to be met to enter the FD TOGA - takeoff mode?

Back 68

1: Both FD switches on and TOGA pressed, 2: TOGA pressed, regardless of FD's being on, after 80 kts below 2000 ft AGL and less than 150 seconds after liftoff

Front 69

Describe the AFDS commanded pitch attitudes in TOGA takeoff

Back 69

-10 degrees nose down until 60 kts, -15 degrees nose up after 60 kts, -15 degrees after liftoff until a sufficient climb rate is established then MCP speed +20 kts

Front 70

How does the AFDS commands for pitch attitudes change if in TOGA takeoff and an engine fails?

Back 70

Commands speed: -V2 if below V2, -Existing speed if between V2 and V2+20, -V2+20 if above V2+20

Front 71

Describe the AFDS roll commands during TOGA takeoff

Back 71

AFDS commands wings level

Front 72

Describe the AFDS autothrottle commands during TOGA takeoff

Back 72

-Pressing TOGA puts AT in N1 mode, -At 84 kts, the AT annunciates THR HLD, -At 800 ft AFE, the AT changes to ARM

Front 73

After takeoff, how does the AT change from ARM to N1 at CLB thrust?

Back 73

-Manually by pressing the N1 switch, -Automatically by reaching the Thrust Reduction Altitude set in the FMC

Front 74

How can you get the AT to command full GA thrust after a reduced thrust takeoff?

Back 74

-Pressing TOGA below 800 ft AFE will change the thrust mode display to GA and N1 reference bugs to full GA thrust, thrust levers will not move, -Pressing TOGA above 800 ft AFE will command full GA thrust

Front 75

How do you terminate TOGA takeoff mode?

Back 75

-Below 400 ft AFE, both FD switches must be turned off. -Above 400 ft AFE, by engaging an AP or selecting another pitch mode

Front 76

For a dual AP approach, what action permits the second AP to engage in command?

Back 76

After setting the LOC frequency and course, selecting APP mode

Front 77

For an ILS approach, can you capture the GS before the LOC?

Back 77

No

Front 78

For an ILS approach, at what point does the N1 limit change to GA in the TMD?

Back 78

At GS capture

Front 79

For a dual AP approach, what happens after LOC and GS capture and after passing 1500 ft RA?

Back 79

-Second AP couples with the flight controls, -Test of ILS Deviation Monitor System occurs, evident by LOC or GS flashing amber, -FLARE mode is armed, -SINGLE CH annunciation extinguishes, -AP GA mode arms (not annunciated)

Front 80

For a dual AP approach, at what point must the second AP be engaged in CMD?

Back 80

800 ft RA

Front 81

For a dual AP approach, what happens at 400 ft RA?

Back 81

The stabilizer is trimmed an additional amount nose up

Front 82

For a dual AP approach, what would cause both AP do disengage at 350 ft RA?

Back 82

FLARE not armed

Front 83

For a dual AP approach, describe the AP FLARE maneuver

Back 83

-At 50 ft RA, FLARE engages and FD bars retract, -At 27 ft RA, AT begins to RETARD to idle, -AT disengages 2 seconds after touchdown, -AP must be manually disengaged after touchdown

Front 84

What is required to enter an AP GA mode?

Back 84

-Both AP engaged, -GA mode armed, which occurs at FLARE armed at 1500 ft RA, -Before touchdown, -TOGA pressed

Front 85

Describe the pitch commands during an AP GA

Back 85

Pitch commands 15 degrees nose up. After reaching a programmed rate of climb, pitch automatically commands the airspeed cursor to the target airspeed for the existing flap setting based on maximum takeoff weight calculations

Front 86

Describe the roll commands during an AP GA

Back 86

Commands current ground track. If LNAV is armed, it engages at 400 ft RA

Front 87

Describe the thrust commands during an AP GA

Back 87

AT engages in reduced thrust GA which provides 1000 to 2000 fpm climb rate. AT FMA is GA.

Front 88

How can you engage in full GA thrust?

Back 88

By pressing TOGA a second time after the AT reaches reduced GA thrust.

Front 89

What does the IAS/Mach display show during an AP or FD GA?

Back 89

It is blank

Front 90

How do you terminate the AP GA mode below 400 ft RA?

Back 90

Both AP and FD are disengaged.

Front 91

What happens if the roll mode is changed first above 400 ft RA during an AP GA?

Back 91

-Roll mode engages in single AP operation by the AP first in CMD. -Pitch remains in dual AP control in TOGA mode

Front 92

What happens if the pitch mode is changed first above 400 ft RA during an AP GA?

Back 92

-Second AP disengages, -Pitch mode engages in single AP control by first AP in CMD, -Roll mode engages in CWS R

Front 93

How does the AT GA mode terminate above 400 ft RA during an AP or FD GA?

Back 93

-Another pitch mode is selected, -ALT ACQ engages

Front 94

What would cause ALT ACQ to be inhibited during an AP GA?

Back 94

The stabilizer trim has not been reset for single AP operation

Front 95

During an AP GA, how would you know that the stabilizer trim position is not satisfactory for single AP operation? What would you do?

Back 95

ALT ACQ would be inhibited, Pitch cannot be changed from TOGA, and the A/P DISENGAGE LIGHT would be steady red. You can either disengage the AP or set a higher MCP Altitude

Front 96

What conditions have to be met for a FD GA to be available?

Back 96

-In flight below 2000 ft RA, -In flight above 2000 ft RA with flaps not up or GS captured, -Not in TOGA - takeoff

Front 97

Do you have to have the FD's on in order to engage TOGA - go around?

Back 97

No, either FD can be on or off

Front 98

Describe the pitch commands during a FD GA

Back 98

Pitch commands 15 degrees nose up. After reaching a programmed rate of climb, pitch automatically commands the airspeed cursor to the target airspeed for the existing flap setting based on maximum takeoff weight calculations

Front 99

Describe the roll commands during a FD GA

Back 99

Commands current ground track. If LNAV is armed, it engages at 50 ft AGL

Front 100

Describe the thrust commands during a FD GA

Back 100

AT engages in reduced thrust GA which provides 1000 to 2000 fpm climb rate. AT FMA is GA.

Front 101

How do you terminate the FD GA mode below 400 ft RA?

Back 101

Both FD switches are turned off.

Front 102

What happens if the roll mode is changed first above 400 ft RA during a FD GA?

Back 102

-Selected roll mode engages, -Pitch remains TOGA mode

Front 103

What happens if the pitch mode is changed first above 400 ft RA during a FD GA?

Back 103

-Selected pitch mode engages, -Roll mode engages in HDG SEL

Front 104

What happens during a FD GA if CMD is selected?

Back 104

Pitch goes to LVL CHG and Roll goes to HDG SEL

Front 105

Describe the pitch commands during a single engine FD GA if engine failure occurred prior to GA engagement

Back 105

Pitch commands 13 degrees nose up. As climb rate increases, pitch commands selected MCP Speed

Front 106

Describe the pitch commands during a single engine FD GA if engine failure occurs after GA engagement

Back 106

Pitch commands 13 degrees nose up. As climb rate increases, pitch commands speed: -Before 10 seconds, MCP speed, -After 10 seconds and within 5 kts of GA engagement speed then GA engagement speed, -After 10 seconds and above 5 kts of GA engagement speed then current speed

Front 107

Describe the roll commands during a single engine FD GA

Back 107

Commands current ground track. If LNAV is armed, it engages at 50 ft AGL

Front 108

During a single engine FD GA, will the speed accelerate automatically?

Back 108

No, the speed window is open and any speed increase must be manually selected

Front 109

Describe the AFS operation after encountering windshear during a FD takeoff or GA

Back 109

-FD pitch bar commands target speed, -If V/S decreases to about +600 fpm, FD commands 15 degrees pitch, -If speed decreases to stick shaker, pitch commands attitude which results in intermittent stick shaker

Front 110

Describe the AFS operation after the aircraft transitions out of winsdshear during a FD takeoff or GA

Back 110

As climb rate increases above +600 fpm, FD commands pitch attitudes that increase to target speed

Front 111

Describe the AFS operation after encountering windshear during an ILS approach

Back 111

Both the AP and FD attempt to keep the aircraft altitude or on GS if after capture without regard to angle of attack

Front 112

The AFS provides commands to avoid which limit speeds?

Back 112

VMO/MMO, Flap Placard, Landing Gear Placard, Minimum Speed

Front 113

How does Command Speed Limiting work?

Back 113

If command speed is greater than a placard speed or less than a minimum speed, the AFS allows speed to the limit but then commands the limit speed

Front 114

What does the IAS/Mach display window show during Command Speed Limiting?

Back 114

The over speed ("8") or under speed ("A") symbol shows

Front 115

How does the AFS command the limit speed during Command Speed Limiting?

Back 115

By either pitch or thrust, whichever one is in a speed mode

Front 116

What is AFS Reversion Modes?

Back 116

If the speed control by the AFDS or AT is insufficient to prevent exceeding a speed limit, the AFS will revert to a more effective mode combination

Front 117

What are the two reversion modes?

Back 117

Placard Limit Reversion and Minimum Airspeed Reversion