.
displayed (amber) – caution range reached

.
displayed (red) – operating limit reached.

Oil Temperature (OIL TEMP) Pointer
Displays oil temperature (degrees C):
.
displayed (white) – normal operating range

.
displayed (amber) – caution range reached

.
displayed (red) – operating limit reached.

High Oil Temperature (OIL TEMP) Amber Band
Displayed (amber) – oil temperature caution range.

High Oil Temperature (OIL TEMP) Redline
Displayed (red) – oil temperature operating limit.
Oil Quantity Indications

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Engines, APU -Over/Under – Displays 737 Flight Crew Operations Manual

Oil Quantity (OIL QTY) Readout
Displays usable oil quantity in quarts.
Video is reversed and LO (white) displayed for low oil quantity.
Note:  Indicated oil quantity may decrease significantly during engine start, takeoff and climb out. If this occurs, engine operation is not impacted and the correct oil quantity should be indicated during level flight.
Note:  An oil quantity indication as low as zero is normal if windmilling N2 RPM is below approximately 8%.
Engine Vibration Indications

Vibration (VIB) Readout Displayed (white) – engine vibration level. Video is reversed for high vibration.

High Limit
Displays tick mark and thick line.

Vibration (VIB) Pointer
Displayed (white) – engine vibration level.
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Engines, APU -Over/Under – Displays
Compact Engine Displays
The following changes occur to the secondary engine display in the compact engine displays.

N2 RPM Indications
N2 changes from round dial display to a digital display.
The digital display is framed by a red box after engine shutdown on the ground if
an inflight exceedance occurred.

OIL PRESS, OIL TEMP Indications
Displayed as digital readouts only
The digital readouts display amber or red if limits are exceeded.

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Engines, APU -Over/Under – Displays 737 Flight Crew Operations Manual

Vibration (VIB) Indications
Displayed as digital readout only.

Crossbleed Start (XB) Indications
Displayed on the side of N2
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Engine Start Switches

ENGINE START Switches
GRD – . opens start valve
.
closes engine bleed valve

.  
for ground starts, arms selected igniter(s) to provide ignition when engine start lever is moved to IDLE

.  
for inflight starts, arms both igniters to provide ignition when engine start lever is moved to IDLE

.
releases to OFF at start valve cutout.

OFF –
.
ignition normally off

.
both igniters are activated when engine start lever is in IDLE and:

.
an uncommanded rapid decrease in N2 occurs or,

.
N2 is between 57% and 50% or,

.
in flight - N2 is between idle and 5%. CONT –

.  
provides ignition to selected igniters when engine is operating and engine start lever is in IDLE

.  
in flight - provides ignition to both igniters when N2 is below idle and
engine start lever is in IDLE.

FLT – provides ignition to both igniters when engine start lever is in IDLE.
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Engines, APU -General Controls and Indicators 737 Flight Crew Operations Manual

Ignition Select Switch
IGN L – selects the left igniter for use on both engines.
BOTH – selects both igniters for use on both engines.
IGN R – selects the right igniter for use on both engines.

Engine Display Control Panel

N1 SET Knob
Refer to section 11, Over/Under - Displays

FUEL FLOW Switch
Refer to section 11, Over/Under - Displays

Speed Reference Selector
Refer to Chapter 10, Flight Instruments, Displays.

MFD Engine (ENG) Switch
Push – ENG
.  
displays secondary engine indications on lower DU; or if the lower DU is unavailable, on upper or inboard DU based on the position of the display select panel selector

.
second push blanks lower DU.

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7.15.2   April 28, 2000
　
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