Content .. 48 49 50 51 ..

Boeing 737 - 600/700/800/900. Operations Manual (1997 year) - page 50

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Upper Display Unit Fails

If the upper display unit fails, the engine display automatically moves to the lower

display unit and the upper display unit blanks.

Note: There is no automatic switching for a lower DU failure.

10.20.6

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

EFIS Control Panel

DISPLAYS

SOURCE

CONTROL PANEL

AUTO

ALL

BOTH

ON 1

ON 2

ON 1

ON 2

NORMAL

MINS

RADIO BAROF

MTRS

BARO

IN HPA

MINS

RADIO BAROF

MTRS

BAROIN HPA

RST

STD

RST

STD

VOR MAP

PLN

2040

VOR1

APP

VOR MAP

PLN

2040

VOR

APP

160

VOR2

160

OFF

CTR

TFC

320

OFF

CTR

TFC

320

OFF

ADF1

640

ADF2

ADF1

640

ADF2

WXR STA WPT ARPT DATA POS TERR

CAPT

F/O

ENGINE

OUTBD

INBD

OUTBD

DISPLAYS

SOURCE CONTROL PANEL

AUTO

ALL

BOTH

ON 1

ON 2

ON 1

ON 2

NORMAL

MINS

RADIO BAROF

MTRS

BARO

IN HPA

MINS

RADIO BAROF

MTRS

BAROIN HPA

RST

STD

RST

STD

VOR MAP

PLN

2040

VOR MAP

PLN

VOR1

APP

160

VOR2

VOR1

APP

102040

160

VOR2

OFF

CTR

TFC

320

OFF

CTR

TFC

320

OFF

ADF1

640

ADF2

ADF1

640

ADF2

WXR STA WPT ARPT DATA POS TERR

CAPT

F/O

ENGINE

OUTBD

INBD

OUTBD

CONTROL PANEL Select Switch BOTH ON 1

The left EFIS control panel controls both pilots’ outboard and inboard display

units.

CONTROL PANEL Select Switch BOTH ON 2

The right EFIS control panel controls both pilots’ outboard and inboard display

units.

10.20.7

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Outboard Display Switching

COMPACT

FORMAT

ENGINE

FORMAT

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

INOP

ENG

OUTBD

PFD

PRI

PFD

INBD

INOP

MAIN PANEL DUs Switch to OUTBD PFD

If the MAIN PANEL DUs switch is turned to Outboard Primary Flight Display

(OUTBD PFD), the compact EFIS format is displayed on the outboard display

unit and the inboard display unit blanks.

10.20.8

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Inboard Display Switching

COMPACT

ENGINE

COMPACT

FORMAT

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

INOP

ENG

OUTBD

PFD

PRI

PFD

INBD

INOP

COMPACT

FORMAT

ENGINE

FORMAT

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

INOP

ENG

OUTBD

PFD

PRI

PFD

INBD

INOP

COMPACT

FORMAT

ENGINE

FORMAT

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

INOP

ENG

OUTBD

PFD

PRI

PFD

INBD

INOP

10.20.9

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

MAIN PANEL DUs Switch to INBD ENG PRI

If the MAIN PANEL DUs switch is turned to INBD ENG PRI, the engine display

moves to the inboard DU, the compact EFIS format is displayed on the outboard

DU and the upper DU blanks.

MAIN PANEL DUs Switch to INBD PFD

If the MAIN PANEL DUs switch is turned to INBD PFD the compact EFIS format

is displayed on the inboard DU and the outboard DU blanks.

MAIN PANEL DUs Switch to INOP

If the MAIN PANEL DUs switch is turned to INBD INOP the compact EFIS

format is displayed on the outboard DU and the inboard DU blanks.

10.20.10

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Lower Display Switching

CAPT

F/O

OUTBD

INBD

OUTBD

ENGINE

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

INOP

ENG

OUTBD

PFD

PRI

PFD

INBD

INOP

CAPT

F/O

ENGINE

OUTBD

INBD

OUTBD

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

INOP

ENG

OUTBD

PFD

PRI

PFD

INBD

INOP

LOWER DU Switch to ENG PRI

If the LOWER DU switch is turned to ENG PRI, the engine display moves to the

lower DU and the upper DU blanks.

LOWER DU Switch to INOP

If the LOWER DU switch is turned to INOP the engine display is shown on the

upper DU and the lower DU blanks.

10.20.11

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Display System Information Sources

Air Data Inertial Reference System (ADIRS)

The ADIRS produces flight data such as position, speed, altitude and attitude for

the flight displays, flight management computers, flight controls, engine controls

and all other systems requiring inertial and air data.

The major components of the ADIRS are:

• two air data inertial reference

• six static ports

units (ADIRUs)

• three pitot probes

• four air data modules (ADMs)

• two alpha vanes

• one inertial system display unit

• one total air temperature probe

(ISDU)

• one dual mode select unit

(MSU)

AUXILIARY

ALPHA

CAPT

F/O

ALT

PITOT PROBE

VANE

STATIC

PORT

F/O PITOT PROBE

TO:STBY

AIRSPD

ADM

ADIRU-R

ADM

TO:

STBY

ADIRU-L

ADM

ALT/

AIRSPD

ADM

CAPT PITOT PROBE

TAT

PROBE

CAPT

F/O

ALT

ALPHA

STATIC

VANE

PORT

PITOT LINES

STATIC LINES

Air Data Inertial Reference Unit (ADIRU)

The ADIRUs provide inertial position and track data to the FMC as well as

attitude, altitude and airspeed data to the displays. The ADIRUs process

information measured by internal gyros and accelerometers, and from air data

module inputs, the alpha vanes and other systems.

The ADIRUs are described in Chapter 11, Flight Management, Navigation.

10.20.12

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Air Data

The pitot static system is comprised of three separate pitot probes and six flush

static ports. Two pitot probes and four static ports interface with the air data

modules. The remaining auxiliary pitot probe and alternate static ports provide

pitot and static pressure to the standby instruments. The auxiliary pitot probe is

located on the first officer’s side of the airplane.

The air data modules convert pneumatic pressure to electrical signals and send

these data to the ADIRUs. Each pitot air data module is connected to its on-side

pitot probe; there is no cross connection. The air data module connected to the

Captain’s pitot probe sends information to the left ADIRU, while the air data

module connected to the First Officer’s pitot probe sends information to the right

ADIRU. The remaining air data modules are located at the balance centers of the

Captain’s and First Officer’s static ports. The air data module connected to the

Captain’s static ports sends information to the left ADIRU, while the air data

module connected to the First Officer’s static ports sends information to the right

ADIRU.

Angle-of-Attack

There are two alpha vanes, one located on each side of the forward fuselage. The

vanes measure airplane angle-of-attack relative to the air mass.

Total Air Temperature

A total air temperature probe is mounted outside the airplane to sense air mass

temperature. The temperature sensed by the probe is used by the ADIRUs to

compute total air temperature.

Static Air Temperature

Static air temperature, displayed on the CDU PROGRESS page, comes from the

ADIRUs, using total air temperature probe information.

Standby Flight Instruments

The standby flight instruments include:

• standby magnetic compass

• integrated standby flight

display

• standby radio magnetic

indicator

Standby Magnetic Compass

A standard liquid-damped magnetic standby compass is provided. A card located

near the compass provides heading correction factors.

10.20.13

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Integrated Standby Flight Display (ISFD)

The ISFD displays attitude, airspeed, altitude, ILS, and heading information. It is

connected directly to the auxiliary pitot and alternate static sources. ILS

information is provided by the No. 1 ILS receiver. The display receives its heading

information from the same source as the captain’s primary flight display.

Note: The standby magnetic compass must be used to validate heading

information.

The battery bus powers the ISFD. Selecting the battery switch ON activates the

ISFD. After 10 seconds, an initialization sequence begins that requires 90 seconds

to complete. ATT and INIT 90s messages are displayed during initialization. Upon

completion of the initialization sequence, attitude information is displayed.

Note: Any change in airplane position during the initialization sequence may

result in an inaccurate alignment. Inaccurate alignment is not annunciated

and may result in the display of inaccurate attitude prior to, and during

flight. Re-initialization can only be accomplished through maintenance

action.

Detection of a momentary out-of-limit ISFD condition may cause the attitude

display to blank and the WAIT ATT or ATT:RST message to display. Operation of

the attitude reset switch is required in response to the ATT:RST message. This will

reset the horizon line with the airplane symbol.

Note: Operation of the attitude reset switch will not correct an inaccurate

alignment.

On the ground, operation of the attitude reset switch must be performed with the

airplane stationary. In flight, operation of the attitude reset switch must be

performed with the airplane in wings level, non-accelerated flight. During the

process, the ATT 10s message displays. Failure to maintain straight and level

flight for 10 seconds may result in an ATT:RST message. If the reset attempt is

unsuccessful, the ATT:RST message remains displayed and the ISFD does not

enter normal operation.

Standby Radio Magnetic Indicator

The standby radio magnetic indicator (RMI) displays magnetic heading and

VOR/ADF bearing to the station. The RMI is powered by the AC standby bus and

remains powered after the loss of all normal AC power as long as battery power

is available.

10.20.14

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Clocks

[Option - Smiths 60B00303-105]

Two electronic clocks are installed, with two digital displays on each clock. Either

Greenwich Mean Time (GMT) or local time may be set on the upper time display.

The lower ET/CHR display is used for either elapsed time or the chronograph.

Separate controls are provided for each display.

Clock Switch

[Option - Remote clock switch]

A remote clock switch, on the glareshield panel, operates the same as the

chronograph (CHR) control.

Flight Recorder

The flight recorder provides a permanent record of selected operational and

systems information such as altitude, heading, acceleration, and airspeed. The

recorder is housed in a sealed, fire-resistant container located behind an access

door in the aft cabin ceiling.

Operational and systems information is automatically recorded whenever the

flight recorder is powered. On the ground, the recorder begins operating when one

of the engines is operating. In the air, the flight recorder is powered even with both

engines shut down as long as APU electrical power is available.

Aircraft Condition Monitoring System (ACMS)

[Option]

The DFDAU receives signals representing certain flight condition and airplane

systems’ operating performance and converts them to a digital form for recording

on the DFDR.

The DFDR records airplane systems and flight data for at least the last 25 hours

of operation. The DFDR is located in the aft fuselage area.

[Option - Quick Access Recorder (QAR) lights]

A indicator on the Aft Overhead Panel illuminates when the quick access recorder

is full. The QAR is located in the electronics equipment bay.

10.20.15

Flight Instruments, Displays -

EFIS/Map System Description

Boeing 737 Operations Manual

Intentionally

Blank

10.20.16

Boeing 737 Operations Manual

Flight Instruments, Displays

Chapter 10

PFD/ND System Description

Section 21

Introduction

The common display system (CDS) supplies information to the flight crew on six

flat panel liquid crystal display units (DUs). The outboard and inboard display

units present all primary flight and navigation information. Primary engine

indications are normally displayed on the upper DU. Secondary engine indications

or system data are normally displayed on the lower DU.

Detailed information on the following subjects is found in other sections of this

chapter:

• Primary Flight Display (PFD)- Section 31

• Navigation display (ND)- Section 41.

Display Brightness Control

Adjustment of the brightness of each DU is controlled by a combination of light

sensors and brightness controls. Two remote light sensors, located left and right

on the top of the glareshield, compensate for the amount of ambient light entering

through the flight deck windows and adjust the brightness of the related DUs.

Each DU also has an integral light sensor which provides automatic control of

brightness as a function of ambient light striking the face of the DU. Brightness

controls are used by the pilot to further adjust the intensity of each display unit.

10.21.1

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

DISPLAYS SOURCE Panel

DISPLAYS

SOURCE

CONTROL PANEL

AUTO

ALL

ON 1

ON 2

BOTH

ON 1

ON 2

NORMAL

CAPT

F/O

ENGINE

OUTBD

INBD

OUTBD

DEU 1

DEU 2

AIRPLANE SENSORS AND SYSTEMS

The DISPLAYS source panel, located on the forward overhead panel, contains

source controls for the display electronic units (DEUs) and EFIS control panels.

Two DEUs receive data from sensors and airplane systems and supply data to the

DUs. During normal operation, with the display SOURCE selector switch in the

AUTO position, DEU1 supplies data to the Captain outboard, Captain inboard and

upper DUs while DEU2 supplies data to the First Officer outboard, First Officer

inboard and lower DUs. If a DEU fails, the remaining DEU automatically supplies

data to all six displays. This prevents the loss of navigation information.

The display SOURCE selector, used on the ground for maintenance purposes,

allows manual selection of either DEU1 or DEU2 for all six display units. If the

displays are automatically or manually switched to a single DEU source, a

“DSPLY SOURCE” annunciation illuminates on both pilot’s primary flight

display.

The CONTROL PANEL select switch determines which EFIS control panel

controls the pilots’ display functions. With the switch positioned to either BOTH

ON 1 or BOTH ON 2, the selected EFIS control panel provides inputs for both sets

of pilot displays. When in the NORMAL position, a “DISPLAYS CONTROL

PANEL” annunciation illuminates below the altitude indication showing a failure

of the associated EFIS control panel.

10.21.2

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

EFIS Control Panels

The EFIS control panels, located on the glareshield, controls display options,

mode, and range for the related pilot’s displays. Refer to the PFD and ND sections

of this chapter for detailed information.

If an EFIS control panel fails, the displays can be controlled by the remaining

control panel.

Display Select Panel

The display select panel, located on the left and right forward panels, controls the

displays on the inboard, outboard and lower DUs. Normal operation is all selectors

in the NORMAL position. The pilots’ outboard and inboard DUs display primary

flight and navigation data and the upper DU displays primary engine data and fuel

quantity.

If a DU fails, automatic display switching ensures critical information remains

available to the pilots at all times. If the system detects an operational failure on

an outboard DU, the primary flight display automatically moves to the inboard

DU and the failed outboard DU blanks. The OUTBD/INDB selector no longer has

control over that display unit. If the upper DU fails, the engine display

automatically moves to the lower DU.

Manual control of display formats is provided for undetected failures. The

outboard rotary switch on the display select panel controls the formats displayed

on either the outboard or inboard DUs. The inboard rotary switch controls the

display format shown on the lower DU.

10.21.3

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

Display Selection and Control Examples

The following examples show display selections.

Normal Display Configuration

DISPLAYS

SOURCE

CONTROL PANEL

AUTO

ALL

ON 1

ON 2

BOTH

ON 1

ON 2

NORMAL

MINS

RADIO BAROF

MTRS

BARO

IN HPA

MINS

RADIO BAROF

MTRS

BAROIN HPA

RST

STD

RST

STD

VOR1

APP

VOR MAP

PLN

2040

VOR2

VOR1

APPVOR MAP

PLN

2040

VOR2

160

OFF

CTR

TFC

320

OFF

CTR

TFC

320

OFF

ADF1

640

ADF2

ADF1

640

ADF2

WXR STA WPT ARPT DATA POS TERR

CAPT

F/O

ENGINE

OUTBD

INBD

OUTBD

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

OUTBD

PFD

PRI

PFD

INBD

MFD

DISPLAYS Source Panel

The display SOURCE select switch is in AUTO and the CONTROL PANEL

select switch is in NORMAL.

EFIS Control Panel

The left EFIS control panel controls the Captain outboard and inboard display

units. The right EFIS control panel controls the First Officer outboard and inboard

display units.

Display Select Panel

All selectors are in NORMAL.

Display Units

The pilots’ outboard and inboard DUs show the normal PFD/ND displays.

10.21.4

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

Display Unit Failure Automatic Switching

PFD

ENGINE

PFD

CAP

PFD

ENGINE

PFD

ENGINE

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

OUTBD

PFD

PRI

PFD

INBD

MFD

Outboard Display Unit Fails

If an outboard display unit fails, the PFD is automatically displayed on the inboard

display unit and the outboard display unit blanks.

Inboard Display Unit Fails

If an inboard display unit fails, the PFD format remains displayed on the outboard

display unit and the inboard display unit blanks.

10.21.5

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

Upper Display Unit Fails

If the upper display unit fails, the primary engine display automatically moves to

the lower display unit and the upper display unit blanks. If the secondary engine

display is already on the lower display unit, a compact engine display is then

displayed.

Note: There is no automatic switching for a lower DU failure.

10.21.6

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

EFIS Control Panel

DISPLAYS

SOURCE

CONTROL PANEL

AUTO

ALL

ON 1

ON 2

BOTH

ON 1

ON 2

NORMAL

MINS

RADIO BAROF

MTRS

BAROIN HPA

MINS

RADIO BAROF

MTRS

BARO

HPA

RST

STD

RST

STD

VOR1

APP

VOR MAP

PLN

2040

VOR

VOR1

APP

VOR MAP

PLN

2040

VOR2

160

OFF

CTR

TFC

320

OFF

CTR

TFC

320

OFF

ADF1

640

ADF2

ADF1

640

ADF2

WXR STA WPT ARPT DATA POS TERR

CAPT

F/O

ENGINE

OUTBD

INBD

OUTBD

DISPLAYS

SOURCE

CONTROL PANEL

AUTO

ALL

ON 1

ON 2

BOTH

ON 1

ON 2

NORMAL

MINS

RADIO BAROF

MTRS

BAROIN HPA

MINS

RADIO BAROF

MTRS

BAROIN HPA

RST

STD

RST

STD

VOR1

APPVOR MAP

PLN

2040

160

VOR2

VOR1

APP

VOR MAP

PLN

2040

160

VOR2

OFF

CTR

105

TFC

320

OFF

CTR

TFC

320

OFF

ADF1

640

ADF2

ADF1

640

ADF2

WXR STA WPT ARPT DATA POS TERR

CAPT

ENGINE

F/O

OUTBD

INBD

OUTBD

CONTROL PANEL Select Switch BOTH ON 1

The left EFIS control panel controls both pilots’ outboard and inboard display

units.

CONTROL PANEL Select Switch BOTH ON 2

The right EFIS control panel controls both pilots’ outboard and inboard display

units.

10.21.7

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

Outboard Display Switching

PFD

ENGINE

PFD

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

ENG

OUTBD

ENG

PFD

PRI

PFD

INBD

MFD

MAIN PANEL DUs Switch to OUTBD PFD

If the MAIN PANEL DUs switch is turned to Outboard Primary Flight Display

(OUTBD PFD), the PFD format is displayed on the outboard display unit and the

inboard display unit blanks.

10.21.8

Flight Instruments, Displays -

PFD/ND System Description

Boeing 737 Operations Manual

Inboard Display Switching

PFD

ENGINE

PFD

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

OUTBD

PFD

PRI

PFD

INBD

MFD

PFD

ENGINE

PFD

MAIN PANEL DUs

LOWER DU

MAIN PANEL DUs

NORM

OUTBD

ENG

OUTBD

PFD

PRI

PFD

INBD

MFD

10.21.9

Content .. 48 49 50 51 ..