737 Flight Instruments, Displays Controls and Indicators

737 Operations Manual

Flight Instruments, Displays Chapter 10Controls and Indicators Section 10

NOTE: Company Logo in color

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Conventional Flight Instruments

Mac/Airspeed Indicator

� Airspeed Cursor Mode Annunciator• auto mode: out of view.• manual mode: in view.

� Vmo PointerIndicates the maximum operating (indicated) airspeed in knots.

� Vmo FlagIn view -• indicates the Vmo pointer is inoperative.

� Airspeed PointerIndicates airspeed in knots.

� Airspeed Cursor Control• push in -

• auto mode.• airspeed cursor is position from the AFDS FCC.

• pull out -• manual mode.• airspeed cursor is positioned by rotating the control.

Vmo

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CAPTAIN’S INSTRUMENT PANELFIRST OFFICER’S INSTRUMENT PANEL

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September 17, 2004 10.10.1

Flight Instruments,Displays -Controls and Indicators

Flight Instruments,Displays -

Controls and Indicators


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� Airspeed Cursor• indicates target airspeed.• positioned manually or automatically, as selected by the airspeed cursor

control.

� Airspeed markersPositioned manually to the desired airspeed reference.

� Mach Digital Counter• shows Mach number, from .40 to .99 Mach, in digital form.• masked below .40 Mach.• digits are covered by a warning flag when the display is unreliable.

Airspeed Cursor Flagmanual mode: retracted.auto mode: in view if airspeed cursor signals, as determined by the AFDSFCC, are unreliable.

Airspeed Digital Counter• digital display of indicated airspeed in knots.• warning flag covers the counter when the airspeed pointer and airspeed

digital counter are unreliable.

Altimeter

� Digital CounterIndicates current altitude in increments of thousands, hundreds and twentyfeet.

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• warning flag appears whenever the ADC signal is lost or a malfunctionexists.

• green flag appears in the left window when the altitude is below 10,000 feet.• a NEG flag appears in the two left-hand windows when altitude below zero

feet is displayed.

� Altitude Pointermakes one revolution each one thousand feet.

� Barometric Setting ControlRotate -• adjusts barometric settings.

� Barometric Setting WindowDisplays barometric correction (in millibars and inches of mercury) as set bythe barometric setting control.

� Reference Altitude Markermanually positioned to the desired reference altitude using the reference alti-tude marker control.

� Reference Altitude Marker ControlUse to manually set the reference altitude marker.

Marker Beacon

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� Marker Beacon LightsAIRWAYS (white) - illuminates over an inner or airways marker beacon.MIDDLE (amber) - illuminates over a middle marker beacon.OUTER 9blue) - illuminates over an outer marker beacon.

� Marker Beacon SwitchHIGH - selects high sensitivity of receiver.LOW - selects low sensitivity of receiver.

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CAPTAIN’S INSTRUMENT PANEL

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Radio Distance Magnetic Indicator

� heading Warning FlagIn view -• selected compass signal is invalid.• RDMI power failure.

� DME IndicatorIndicates DME distance from selected DME station in nautical miles (300 nauti-cal miles maximum).Warning Flags:• 1 -

• electrical power lost.• invalid DME receiver.

• 2 -• DME receiver powered but not receiving a DME station.• agility tuning in progress.

� Bearing Pointer Warning FlagIn view -VOR mode:• RDMI power failure.• VHF NAV signal unreliableADF mode - REMI power failure.

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� Bearing Pointers• narrow pointer uses signals from the VHF NAV receiver No. 1 or ADF receiver

No. 1.• wide pointer uses signals from the VHF NAV receiver No. 2 or ADF receiver

No. 2.

� VOR/ADF Bearing Pointer SwitchROTATE - selects related VOR or ADF for the bearing pointer.

Vertical Speed Indicator

� Vertical Speed Pointer• depicts rate of climb or descent from 0 to 6,000 feet per minute.• indicates zero when IRS vertical speed is unreliable.

� OFF FlagIn view -• respective VSI and/or ADC has failed.• selected IRS vertical speed data are unreliable.

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Air Temperature

� Digital DisplayDisplays TAT (deg C) indications in digital form.

Clock

� Chronograph (CHR) ControlPush - Controls the start, stop and reset functions of the CHR display and sec-ond hand with successive pushing.• overrides any existing ET display.

� Time/Date Window• displays time (hours, minutes) when time is selected with the time/date

selector.• alternately displays day-month and year when date is selected with the time/

date selector.

� Chronograph Second Hand

CENTER INSTRUMENT PANEL

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• indicates chronograph seconds.• controlled by the CHR control.

� Elapsed Time (ET) Selector (three position, rotary)Controls the elapsed time function.RESET - returns ET display to zero (spring loaded to HLD).HLD (hold) - stops the elapsed time display.RUNB - starts the elapsed time display.

� Date ControlPush - displays date (day, month) alternating with year.Push - retunes display to time.

� Elapsed Time 9ET)/Chronograph Window• displays elapsed time (hours, minutes) or chronograph minutes.• the chronograph display replaces the elapsed time display.• elapsed time continues to run in the background and displays after the chro-

nograph is reset.

� Time Control (four position, rotary)Sets the time and date when the time/date selector is set to manual.FS D (fast slew, day) -• advances hours when time is selected with the time/date selector.• advances days when date is selected with the time/date selectorSS M (slow slew, month) -• advances minutes when time is selected with the time/date selector.• advances months when date is selected with the time/date selector.HLD Y (hold, year) -• stops the time indicator and sets the seconds to zero when time is selected

with the time/date selector.• advances years when date is selected with the time/date selector.RUN - starts the time indicator.

Standby Flight Instruments

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Standby Horizon -400

Standby Horizon -300

� Bank Indicator and ScaleScale marks are at 0,10, 20,30,45 and 60 degrees.

� Glideslope FlagIn view - glideslope receiver has failed.


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� Horizon Line and Pitch Angle ScalePitch scale is in 5 degree increments.

� LOC FlagIn view - Localizer receiver has failed.

� Approach Mode SelectorOFF - glideslope and localizer pointers retracted from view.ILS - glideslope and localizer pointers in view; ILS signals provided by the No.1 ILS receiver.B/CRS - reverses sensing for localizer pointer during back course approaches;glideslope pointer not displayed.

� GYRO FlagIn view -• attitude is unreliable.

� Glideslope Pointer and Deviation Scale• pointer indicates glideslope position.• pointer is not displayed when:

• approach selector is off.• no computed data exists• glideslope receiver has failed

• scale indicates deviation.

� Localizer Pointer and Deviation Scale• pointer indicates localizer position.• pointer is not displayed when:

• approach selector is off.• no computed data exists.• localizer receiver has failed.

• scald indicates deviation.

Airplane Symbol

Caging ControlPull - provides fast erection (caging) of the gyro.Release - control retracts.

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Standby Altimeter/Airspeed Indicator

� Standby AltimeterIndicates current altitude in feet.

� Digital CounterIndicates thousands of feet• a green flag appears in the left window when altitude is less than 10,000

feet.• a striped flag appears in the left window when altitude is less than zero feet.

� Barometric Setting ControlRotate -• adjusts the barometric correction in both barometric windows.

� Altitude PointerIndicates hundreds of feet.

� Barometric Setting WindowsDisplays barometric correction in millibars and inches of mercury as set by thebarometric setting control.

� Standby Airspeed IndicatorIndicates current airspeed in knots.


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Standby Magnetic Compass

� Standby Magnetic CompassDisplays magnetic heading.

� Standby magnetic Compass Correction Cardprovides appropriate heading corrections.

Flight Recorder

� FlIght Recorder Test SwitchNORMAL (guarded position) -• in flight - the recorder operates anytime electrical power is available• on the ground - either engine must also be operating.TEST - bypasses the engine oil pressure switches and the air ground switch topower the flight recorder on the ground.

� OFF Light

CENTER POST AB0VE GLARESHIELD

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AFT OVERHEAD PANEL

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Illuminated (amber) - indicates the recorder is not operating or the test isinvalid. may indicate power failure, loss of input data, or electronic malfunc-tion.

Aircraft Condition Monitoring System (ACMs) Printer -300

� SLEW SwitchAdvances paper feed.

� TEST SwitchInitiates self-test to print character list.

� RESET SwitchResets Printer.

� PAPER IndicatorIndicates paper level.

� FAIL Light

AFT ELECTRONIC PANEL

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Indicates paper supply is exhausted.

� PAPER LightIndicates paper supply is exhausted.

� Message (MSG) LightIndicates message pending on printer.

10.10.14 September 17, 2004

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737 Flight Instruments, Displays Controls and Indicators