.  
Nosewheel steering.is available.

.  
If green.hydraulic pressure.is lost:

.  
Yellow hydraulic pressure.takes.over automatically.to supply.the.brakes.

.  
Antiskid remains available.

.  
Nosewheel steering.is lost.

.  OFF

.  
Yellow hydraulic.pressure supplies the.brakes.

.  
Brake.pressure.must be limited.by.referring.to.the.triple indicator.to avoid.wheel locking.

.  
Differential braking.remains available.via.the.pedals.

.  
Antiskid is deactivated.

.  
Nosewheel steering.is.lost.

TERR.ON.ND

Displays.a."Terrain.Map.Display" on.the.ND.for aircraft equipped.with.Enhanced.Ground Proximity.Warning System.(EGPWS).
12.11.06  -.55-
the.main.wheel
Landing.Gear.Lever
Provides.electrical.signals.to.the two.LGCIUs which.control.the.green.hydraulic.supply.
.  
UP.-Retracts.landing.gear. When the gear.doors.open, the.main.wheels are automatically.braked.by the.normal brake.system..The.nose.wheel are stopped.by.a.brake.band.in.the.gear well during.door.closure. When.the lever.is UP,.the.hydraulic supply.is automatically.cut.off.above.260.KIAS

.  
DOWN -Extends the.landing gear. The.system remains pressurized.if green.hydraulic pressure.is available. An.interlock.mechanism prevents unsafe.retraction.by locking.the.lever

in.the DOWN.position.when.any.gear shock absorber is compressed.or.the
nosewheel steering.is not centered.
DOWN.Arrow

Illuminates red.associated.with.ECAM."GEAR NOT DOWN".warning.if.the.landing.gear.is not downlocked.with.any.one.of the.following:
.  
Radio.altitude.less than.750.feet and both.engine's.N1 below 75%.

.  
Radio.altitude.less than.750.feet and Flaps 3.or.FULL.selected.

.  
Flaps FULL.selected.with both.radio altimeters.failed

12.11.06  -.56-
4.12..Clock(A320)date.i
CHR.Button
First.push.starts.Sweep.Second.Hand.and.minutes display.in.the.ET/CHR.indicator..Second.push.stops second.hand.and.freezes.minutes.display..Third push.resets.second.hand.to.the.12.o'clock.position and.blanks.CHR.indicator.
DATE.Button
Sets the.Chronometer.in.the.Date.Mode..The date.is set by.positioning.the.UTC Selector.to HSD.(day),.MSM.(month).and.HLDY.(year). Return.the.UTC Selector.to.the.RUN position. Pressing.the.DATE.button.again.will.resume the.display.of UTC time.
ET.Counter
Displays.elapsed.and.chronograph.time. Chronograph.time.display.has priority.over
elapsed.time.
Sweep.Second.Hand
Indicates Chronometer.seconds.
ET.Selector

.  
RUN.-Starts the.elapsed.time.counter.
　
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本文鏈接地址：Flight Deck Documentation AIRBUS A320 空客A320駕駛艙文件(28)