Boeing 737 - 600/700/800/900. Operations Manual (1997 year)

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Climb Phase

VNAV commands acceleration to:

•

250 knots

•

waypoint speed constraints, or

• the speed restriction associated with the origin airport, whichever is more

restrictive.

At the climb thrust reduction point, climb thrust can be selected. Passing 10,000

feet, VNAV commands an acceleration to the economy climb speed, which is

maintained until entering the cruise phase. Waypoint speed constraints take

priority if slower than target speed.

[Option - With automatic thrust reduction after takeoff]

At the climb thrust reduction point, the FMC commands a reduction to the selected

climb thrust. Passing

10,000 feet, VNAV commands an acceleration to the

economy climb speed, which is maintained until entering the cruise phase.

Waypoint speed constraints take priority if slower than target speed.

[Option - With quiet climb]

When cutback mode is selected ON, the FMC calculates and commands a cutback

thrust rating at the required cutback altitude. A new N1 is calculated during climb

and normal climb thrust is restored at the RESTORE altitude. Passing 10,000 feet,

VNAV commands an acceleration to the economy climb speed, which is

maintained until entering the cruise phase. Waypoint speed constraints take

priority if slower than target speed.

During the climb, VNAV complies with the LEGS page waypoint altitude and

speed constraints. A temporary level-off for a crossing altitude restriction is

accomplished at the current commanded speed.

When the climb speed profile causes an anticipated violation of a waypoint

altitude constraint, the FMC displays the CDU scratchpad message UNABLE

NEXT ALTITUDE. A different speed profile that provides a steeper climb angle

must be manually selected.

If a CLB 1 or CLB 2 derate is selected, the derate is maintained for the initial part

of the climb. Thrust eventually increases to maximum climb thrust by 15,000 feet.

11.41.2

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Climb Page

The climb page is used to evaluate, monitor, and modify the climb path. The data

on the climb page comes from preflight entries made on the route and performance

pages.

[Option - FMC U10.3 and later]

The climb page is automatically selected by pushing the CLB function key on the

ground and during takeoff and climb. The TAKEOFF REF page automatically

transitions to the climb page after takeoff.

[Option - FMC U10.3 and later with FANS MCDU]

The climb page is automatically selected by pushing the VNAV function key on

the ground and during takeoff and climb. The climb page is the first of the three

pages selected with the VNAV function key. Access from other performance

pages is via the NEXT/PREV PAGE key. The TAKEOFF REF page automatically

transitions to the climb page after takeoff.

The FMC climb mode can be economy or fixed speed. In either mode, similar data

is displayed on the page.

CLB

ACT ECO N CLB

1 / 1

ACT MA X RATE CLB

1 / 1

ACT MA X ANGLE CLB

1 / 1

ACT

T CLB

1 / 1

C R Z A L T

A T M A C E Y

FL3

6000A

T G T S P D

T O M A C E Y

280/.7

2004.3Z /

19N M

S P D R E S T

E R R M A C E Y

250/100

310L O

- - - - - - - -

- -

C L B - 1

N 1

<ECO N

97.3/

97.3%

- - - - - - - - -

<MAX RAT E

ENG OUT>

<MAX ANGL E

RTA>

October 15, 2001

11.41.3

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

[Option - With FANS MCDU]

AC T

CRZ

2 / 3

PAGE

DES

3 / 3

PAGE

On Ground,

Takeoff mode, or

VNAV

Climb mode

ACT ECO N CLB

1 / 3

ACT MA X RATE CLB

1 / 3

ACT MA X ANGLE CLB

1 / 3

ACT

T CLB

1 / 3

C R Z A L T

A T M A C E Y

FL3

6000A

T G T S P D

T O M A C E Y

280/.7

2004.3Z /

19N M

S P D R E S T

E R R M A C E Y

250/100

310L O

- - - - - - - -

- -

C L B - 1

N 1

<ECO N

97.3/

97.3%

- - - - - - - - -

<MAX RAT E

ENG OUT>

<MAX ANGL E

RTA>

Page Title

The page title displays the type of climb. Normally, the title displays ECON for

the economy climb mode. Fixed speed climbs modify the title.

ECON indicates the speed is based on a cost index.

MAX RATE indicates the speed is based on the maximum altitude over the

shortest period of time.

MAX ANGLE indicates the speed is based on the maximum altitude over the

shortest horizontal distance.

11.41.4

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Fixed climb speeds display XXXKT for a fixed CAS climb speed or M.XXX for

a fixed Mach climb speed profile. Reasons for fixed speeds are:

• takeoff/climb acceleration segment constraints

• waypoint speed constraints

• an altitude constraint associated with a speed constraint

• a speed restriction

• a crew entered speed.

Displays ACT when the climb phase is active.

Cruise Altitude (CRZ ALT)

The cruise altitude from the PERF INIT page is displayed. A new altitude can be

manually entered.

Cruise Altitude (CRZ ALT)

[Option - With speed and altitude intervention]

The cruise altitude from the PERF INIT page is displayed. The altitude can be

changed by two methods:

• a new altitude can be manually entered from the CDU at any time.

Changing the altitude in this manner creates a modification.

• setting the MCP altitude above the current FMC CRZ altitude, provided

no intermediate altitude constraints exist between the current airplane

altitude and the MCP target altitude. Selecting the new altitude on the

MCP and pushing the altitude intervention button places the new altitude

in the CRZ ALT data line. Entering a new cruise altitude in this manner

does not create a modification.

Target Speed (TGT SPD)

Displays computed values or manually entered values for the selected mode.

Computed speed is limited to a maximum of 335 knots/M.809.

Airspeed and/or Mach may be entered using the keyboard. Title will display

manually entered value.

The active controlling speed is highlighted in reverse video.

Speed Restriction (SPD REST)

The speed restriction line displays the speed restriction/altitude from one of the

following sources:

• the navigation database value for the origin airport

• waypoint related restriction from the RTE LEGS page if restriction limits

climb speed

• a default speed of 250 knots and 10,000 feet (example 250/10000)

October 15, 2001

11.41.5

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

• displays XXX/FLAPS if the active speed restriction is lower than the

minimum speed for the selected flap setting

• displays XXX/HOLD when decelerating to hold speed prior to hold entry

fix.

Dashes displayed if no active speed restriction exists.

Manual crew entries or deletions may be made. HOLD or FLAPS speed may not

be deleted or modified.

Note: If the FMC default speed restriction is overwritten, it will be deleted and

not return after the overwrite condition passes. (e.g. the default of

250/10000 is overwritten to 230/3000, after 3000 feet is passed there will

be no speed restriction and VNAV will accelerate to the unrestricted climb

speed.

The active controlling speed is highlighted in reverse video.

[Option - With quiet climb]

When cutback mode is selected ON, the cutback airspeed and RESTORE altitude

is the active speed/altitude restriction. Deletion or modification of the cutback

speed/altitude restriction is not allowed.

Climb Page Prompts

PUSH - selects various CLB pages.

Following line selection, the prompt for that page blanks.

AT XXXXX

The waypoint constraint line displays the next waypoint having an altitude

constraint. Constraints are entered on the RTE LEGS page or by departure

procedure selection. The constraints can be deleted on this page or the RTE LEGS

page. The waypoint may be a HOLD AT point.

Display is blank if no restriction exists.

TO XXXXXX

Displays ETA and distance to go to waypoint on AT XXXXXX line.

If no waypoint constraint exists, values are for CRZ ALT.

Error (ERR XXXXX)

Displays predicted altitude undershoot for the waypoint on AT XXXXXX line.

During VNAV operation, the FMC commands a level off if an overshoot is

predicted.

Display is blank, including the label, if no error exists.

11.41.6

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Climb N1 (CLB N1, CLB - X N1)

[Option - FMC U10.3 and later]

Displays the computed climb N1 value.

Climb N1 (CUTBACK N1, CLB N1, CLB - X N1)

[Option - FMC U10.3 and later with quiet climb]

Displays the computed climb N1 value.

Engine Out (ENG OUT)

Selection displays RT ENG OUT and LT ENG OUT prompts. See ENG OUT

CLB page description.

[Option - With engine out SIDS]

Selection will also load the engine-out SID if the following conditions are true:

• an engine-out SID exists for the ACTIVE departure runway

• an engine-out SID is not already selected for the active route

• the flaps are not up and have not been up since the takeoff was started

• flight phase is takeoff or climb

• the airspeed is greater than 80 kts (airborne).

[Option - FMC U10.4 and later]

When the above conditions are met and there is a loss of thrust or split between

the thrust levers, the FMC will automatically load the engine-out SID upon

detection of the engine-out condition.

Required Time of Arrival (RTA)

Displays the RTA PROGRESS page.

ERASE prompt replaces RTA during a page modification.

11.41.7

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

RTA Climb Page

The RTA climb page is displayed when a required time of arrival is active.

The RTA climb page is automatically selected by pushing the CLB function key

when RTA is active.

[Option - With FANS MCDU]

During climb, the RTA climb page is automatically selected by pushing the VNAV

function key when RTA is active.

Displays on this page are the same as other climb pages except as noted.

ACT RT A CLB

C R Z A L T

A T M A C E Y

FL3

6000A

T G T S P D

T I M E E R R O R

294/.7

ON TIME

S P D R E S T

250/100

- - - - - - - -

- -

<ECO N

- - - - - - - - -

<MAX RAT E

ENG OUT>

<MAX ANGL E

RTA>

Target Speed (TGT SPD)

Displays computed speed required to meet entered RTA.

When RTA is exited by waypoint sequence or deletion, this speed changes to FMC

target speed.

TIME ERROR

Displays computed time error at RTA waypoint. Same as RTA PROGRESS page.

11.41.8

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

RTE LEGS Page

RT E LEGS

PAGE

ACT RT E DATA

LEGS>

LEGS

RT E

LEGS

1 / 4

129 ` H D G

3 .1 N M

(100

)

166 /

1000A

4 .2 N M

LACR E

214 /

2500

1 .8 N M

LAC

250/

4690

6 .9 N M

VAMP S

250/

8000A

47 N M

RUMO R

. 637 /F L 1 9 0

R N P / A C T U A L - - - - - - - - - - - - -

1 .00 / 0 . 2

ACTIVATE>

Page Title

An active route legs page title is displayed with ACT as part of the title. A

modified page title displays a reverse video MOD.

October 15, 2001

11.41.9

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Leg Direction

The leg segment direction is displayed as the title of the waypoint line. Courses

are displayed in magnetic (xxx°) or true (xxx° T). Directions to maintain an arc

display the arc distance, the word ARC followed by the direction, and left or right

(24 ARC L). The computed great circle route leg directions may be different than

chart values. Heading leg segments to conditional waypoints are displayed as

(xxx° HDG) and track leg segments are displayed as (xxx° TRK). Directions may

be displayed as special procedural instructions, such as HOLD AT or PROC

TURN.

Display is blank for an undefined course.

Waypoint Identifier

The current active leg is always displayed at the top of the first active RTE LEGS

page.

All route waypoints are displayed. Waypoints on an airway are included on the

route legs page. Waypoints appear in flight sequence.

Waypoints can be entered and moved. This includes:

• adding new waypoints

• resequencing existing

• removing existing waypoints

waypoints

• linking route discontinuities.

Displays the waypoint by name or condition.

Box prompts are displayed for route discontinuities.

Dashes are displayed for the next line beyond the end of the route.

Required Navigational Position/Actual (RNP/ACTUAL)

Displays the required navigation accuracy compared to actual navigation

accuracy.

Manual entry is allowed.

Distance to Waypoint

Displays the distance from the airplane or the waypoint to the next waypoint.

Calculated Waypoint Speed/Altitude

Displays the calculated speed or altitude at the waypoint in small font.

Specified Waypoint Speed/Altitude

Displays any waypoint speed or altitude constraint in large font.

Manual entry is allowed.

11.41.10

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

ACTIVATE, RTE DATA

The activate prompt is displayed on the legs page when the route is not active.

Push -

• ACTIVATE arms the execute function. Pushing the EXEC key activates

the route and changes the ACTIVATE prompt to RTE DATA

• RTE DATA displays the route data page. The RTE DATA prompt is used

to review or modify additional information about the route.

October 15, 2001

11.41.11

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Map Center Step Display

The map center step prompt replaces ACTIVATE or RTE DATA when the EFIS

control panel mode selector is placed in the PLAN position. Pushing the prompt

key advances the waypoint that is displayed in the center of the navigation display.

The label <CTR> is displayed to the right of the corresponding waypoint on the

RTE LEGS page.

ACT RT E

LEGS

1 / 4

129 ` H D G

3 .1 N M

(100

)

166 /

1000A

4 .2 N M

LACRE

TR>

214 /

2500

1 .8 N M

LAC

250/

4690

6 .9 N M

VAMP S

250/

8000A

47 N M

RUMO R

. 637 /F L 1 9 0

R N P / A C T U A L - - - - - - M A P C T R

1 .00 / 0 . 2

STEP>

Map Center Label (<CTR>)

Identifies the waypoint around which the map display is centered.

Whenever the EFIS Mode selector is positioned to PLAN, the label is

automatically displayed for the first geographically fixed waypoint on the

displayed page.

STEP

Displayed on a CDU when PLAN is selected on the associated EFIS control panel.

Replaces the RTE DATA or ACTIVATE prompt.

Push - moves the map center label to the next geographically fixed waypoint in

the route.

11.41.12

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Progress Page 1/X

The progress page provides general flight progress information along the route of

flight such as:

• waypoints (last, active and

• destination information

next)

• altitude change points

• waypoint ETA

• current wind

• waypoint ATA

• fuel quantity

• distance to go information

[Option - With flight number entry]

The page title displays the company flight number from the RTE page.

[Option - FMC U10.4A and earlier with flight number entry]

RTA PROGRESS

2 / 3

PAGE

FLT

PROGRESS

3 / 3

PAGE

PROG

FLT4

PROGRESS

1 / 3

F R O M

A L T

A T A

F U E L

CYN

186

1349Z

35.2

D T G

E T A

F U E L

EN O

1355Z

32.9

GV E

192

1411Z

31.1

KAT L

606

1510Z

17.6

T O T / C

F U E L Q T Y

1355Z /

34.0

W I N D

080`/

NAV STATUS>

11.41.13

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

[Option - FMC U10.5 and later with flight number entry]

FLT4

PROGRESS

2 / 4

PAGE

RNP PROGRESS

4 / 4

PAGE

POS INIT>

PROG

FLT4

PROGRESS

1 / 4

F R O M

A L T

A T A

F U E L

CYN

186

1349Z

35.2

D T G

E T A

F U E L

EN O

1355Z

32.9

GV E

192

1411Z

31.1

KAT L

606

1510Z

17.6

T O T / C

F U E L Q T Y

1355Z /

34.0

W I N D

080`/

NAV STATUS>

FROM

Displays the identifier of the last (FROM) waypoint, the altitude (ALT), the actual

time of arrival (ATA), and the fuel at that waypoint.

Active Waypoint

Displays the identifier of the active waypoint, the flight plan course to the active

waypoint, and distance-to-go

(DTG) from present position to the active

waypoint. Also displays the estimated time of arrival (ETA) and predicted fuel

remaining at the active waypoint. The active waypoint is highlighted by reverse

video.

Next Waypoint

Displays the identifier of the next waypoint which follows the active waypoint, the

flight plan course for that leg, and flight plan distance-to-go (DTG) from present

position to the next waypoint. Also displays the estimated time of arrival (ETA)

and predicted fuel remaining at the next waypoint.

11.41.14

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Destination

Displays the identifier of the destination airport

(DEST) and flight plan

distance-to-go (DTG) from present position to the destination. Also displays

estimated time of arrival (ETA) and predicted fuel remaining at the destination.

When a route modification is in progress, the destination line label displays MOD.

Performance predictions include the modification.

Altitude Change Point (TO XXXXX)

Displays ETA and distance to go to the following altitude change points as

appropriate to phase of flight:

• TO T/C: to top of climb for the

• TO T/D: to top of descent, if no

active climb

STEP TO entry is made on

• TO STEP POINT: to the step

CRZ page

point if a STEP TO entry is

• TO E/D: to the end of descent

made on CRZ page

waypoint for an active path

descent; blank if a path descent

is not available.

WIND

Displays current true wind direction and speed.

Fuel Quantity (FUEL QTY)

Displays the present total fuel quantity remaining as obtained from the airplane

fuel quantity indication system.

NAV STATUS

Push - displays the navigation status page.

11.41.15

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

RTA Progress Page 2/3

[Option - FMC U10.4A and earlier]

RTA Progress page is used to initiate the required time of arrival (RTA) mode.

The RTA page provides advisory data on flight progress in the RTA mode and

advises of control times such as recommended takeoff time to meet RTA.

PROGRESS

1 / 3

PAGE

PROGRESS

3 / 3

PAGE

PER F LIMITS

2 / 2

CLB

CR Z

DE S

Display before RTA Waypoint Entry

RTA PROGRESS

2 / 3

R T A W P T

----

- - - - - - - -

- - - - - - - - - - - - - -

<LIMIT S

PRIOR RTA>

11.41.16

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Required Time of Arrival Waypoint (RTA WPT)

Displays dashes when entry allowed.

LIMITS

Displays the PERF LIMITS page.

Prior RTA Waypoint (PRIOR RTA)

Prompt displayed when the RTA waypoint field contains dashes and a previous

RTA waypoint is still in the flight plan; otherwise blank.

Push - displays last active RTA waypoint data.

October 15, 2001

11.41.17

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

RTA Progress on Ground and in Flight

Ground

ACT RTA PROGRESS

2 / 3

R T A W P T

R T A

EP H

1100:00zB

T I M E E R R O R

TIME

R E C M D T

G M T

1040: 02

1003:00Z

D I S T - - T O

P H

- - A L T / E T A

126

F L 2 5 0 /1022:29Z

- - - - - - - T

W I N D O W - - - L A S T

41:44Z

- - - - - - - -

- - - - - - - - - - - - - -

<LIMIT S

In Flight

ACT RTA PROGRESS

2 / 3

R T A W P T

R T A

EP H

1012:00zA

R T A S P D

T I M E E R R O R

250/.6

EARLY

01:30

S P D R E S T

G M T

250/100

1000:30Z

D I S T - - T O - E P H

- - A L T / E T A

F L 2 5 0 /1010:30Z

F I R S T - - R T A W I N D O W - - - L A S T

1008:23

1010:30Z

- - - - - - - -

- - - - - - - - - - - - - -

<LIMIT S

Required Time of Arrival Waypoint (RTA WPT)

Waypoint entry must be in flight plan or the CDU message NOT IN FLIGHT

PLAN will be displayed.

Entering a valid waypoint will generate a MOD RTA PROGRESS page and

illuminate the EXEC light.

Deletion of the RTA waypoint will create a MOD RTA PROGRESS page with all

data blanked and EXEC light illuminated. Execution will exit the RTA mode.

11.41.18

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Deletion of the RTA waypoint does not remove the waypoint from the flight plan.

Automatically clears the RTA waypoint and exits the RTA waypoint after

sequencing the RTA waypoint out of the flight plan.

Recommended Takeoff Time (RECMD T/O)

Displays the recommended takeoff time to meet the planned RTA.

Time is based on entered Cost Index as well as the earliest and latest times to

achieve RTA.

Distance To, Altitude, and ETA at the RTA Waypoint

(DIST - - TO XXX

- -ALT/ ETA)

Displays the distance to the RTA waypoint.

Displays the predicted altitude at the RTA waypoint.

Displays ETA at the RTA waypoint based on:

• immediate takeoff

• MIN/MAX speeds on PERF LIMITS page

• entered forecast winds.

Required Time of Arrival (RTA)

After RTA waypoint entry, initially displays current ETA based on the active flight

plan and performance parameters at time of waypoint entry.

Desired RTA may be entered by overwriting displayed data.

Entry must be in one of the following forms:

• XXXXXX (hr/min/sec)

• XXXX (hr/min)

• XXXX.X (hr/min/tenths of min).

Entry of “A” after RTA specifies arrival time of at or after.

Entry of “B” after RTA specifies arrival time of at or before.

TIME ERROR

Displays the most recent time error in minutes and seconds up to a maximum of

59:59 minutes.

Displays ON TIME if GMT is within current T/O WINDOW.

Displays EARLY or LATE as appropriate if GMT is not within current T/O

WINDOW.

October 15, 2001

11.41.19

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

GMT

Displays the actual GMT.

Takeoff Window (- - - - - - - T/O WINDOW - - - LAST) or

(FIRST - - T/O WINDOW - - - - - - -)

Displays earliest and latest takeoff times to meet the planned RTA.

If the entered RTA time is an “At or After” time, only the FIRST field shall be

displayed.

If the entered RTA time is an “At or Before” time, only the LAST field shall be

displayed.

Times are based on minimum and maximum speeds on the PERF LIMITS page.

Required Time of Arrival Speed (RTA SPD)

Displays the target speed required to meet the planned RTA.

Same as speed displayed on RTA CLB, CRZ, or DES page.

Limited by MIN/MAX speeds on the PERF LIMITS page and the SPD REST line.

Speed Restriction (SPD REST)

Displays the current speed restriction affecting RTA progress.

Arrival Time Window (FIRST - - RTA WINDOW - - - LAST)

Displays earliest and latest achievable arrival times at the RTA waypoint.

Times based on MIN/MAX speeds on PERF LIMITS page, existing winds, and

entered forecast winds.

LIMITS

Push - Displays PERF LIMITS page.

TIME ERROR

In flight, displays difference between the ETA and the RTA plus the TIME

ERROR TOLERANCE on the PERF LIMITS page.

11.41.20

October 15, 2001

Flight Management, Navigation -

FMC Takeoff and Climb

Boeing 737 Operations Manual

Progress Page 3/3

[Option - FMC U10.4A and earlier]

The progress page 3/3 displays wind, track, path, temperature, and speed data.

[Option - FMC U10.3 and later with GPS and flight number entry]

RTA PROGRESS

2 / 3

PAGE

FLT

PROGRESS

1 / 3

PAGE

FLT

PROGRESS

3 / 3

T A I L W I N D

C R O S S W I N D

3K T

W I N D

S A T / I S A D E V

104`/

-40`C /

0`C

X T K E R R O R

V E R T D E V

0.01

12H I

G P S - L T R K

T A S

305

426K T

11.41.21

Boeing 737 - 600/700/800/900. Operations Manual (1997 year) - page 64