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31 Cards in this Set
- Front
- Back
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When is the windshield heated when the WINDSHIELD
HEATING 1 or 2 button is pushed IN? |
Always on when there is AC power available except as
follows: When there is only a single AC power source then On Ground: they are load shed. In-Flight: only one side works (normally the Captain’s Side unless it has failed in which case the First Officer’s Side will be heated) |
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What does the AUTO position of the MODE selector do
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In-Flight: Operates automatically IAW System
Logic and Icing Conditions and On Takeoff: Operates IAW System Logic and the setting selected in the TO DATASET MENU |
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What does the Pushed OUT position do on the selector
knob for Engine 1 or 2 Ice Protection? |
Closes the engine anti ice valve and prevents automatic
operation |
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Turning the MODE selector to ON (on the ICE
PROTECTION panel) does what? |
Opens the Engine and Wing Anti-Ice Valves
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Why do we have a TEST selector
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It is a maintenance function only
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The WINDSHIELD WIPER TIMER selection does what
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It selects a 7 second intermittent operation
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How many ice detection systems are installed
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Two and they are completely redundant.
One system will provide complete detection capability. |
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How long after the system no longer detects ice will the
Ice Protection for the engine and wing stay on? |
For five minutes after ice is no longer detected
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What will happen on takeoff if the TO DATA SET is set
to ENG and the MODE selector in is AUTO and ice is detected? |
The engine anti ice will be on as long as the engines are
running and the wing anti ice will be on up to 1700 feet AGL or 2 minutes after liftoff. |
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What will happen on takeoff if the TO DATA SET is set
to ENG and the MODE selector in is AUTO and ice is not detected? |
The engine anti ice will be ON
The wing anti ice will be OFF |
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Will you be provided automatic engine and wing anti ice
protection if taking off in icing conditions with the TO DATA SET selected to OFF? |
No protection up to 1700' AGL or two minutes after
liftoff. After the above mentioned limit, the TO DATA SET selection has no impact on the anti ice system and the engine and wing anti ice will simply turn on whenever ice is detected. |
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Will wing anti ice ever be provided automatically while
the aircraft is on the ground? |
Wing anti ice will be provided with wheel speed > 40
knots with the TO DATA SET selected to ALL and the MODE Selector is selected to AUTO. |
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What would cause an ENG REF A-I DISAG EICAS
message? |
Whenever the MODE selector is ON and the setting in the
TO DATASET MENU would not have normally turned on the anti ice if the MODE selector were in AUTO. |
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Explain how the ice detector works
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A sensing element is driven to vibrate at its mechanical resonance by an ossilator circuit. Ice build up on the detector is driven by a change in the vibration frequency due to the accumulation of ice.
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When is the ICE DET cas message inhibited
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17000 ' below airfield or 2 minutes after lift off
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What supplies temp readings to the FADEC for engine heat
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T2 sensor
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What detects an over heat condition in the wing antice
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Dual loop over heat detection sensors
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If the MCDU is set to OFF for ice detection what will happen
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Ice protection would be inhibited on takeoff up to 1700 ft or 2 minutes and the FADEC would command max t/off thrust. If ice was encountered it would have to be commanded on with the icing panel to have protection
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If the Ice panel was set to ON and the MCDU was set to off what would you get
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A cas messgae for disagrement
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What are the wiper cycles on LOW
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80/MIN
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What are the wiper cycles on HIGH
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125/MIN
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What are the wiper cycles when set on TIMER
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2 strokes w/7 second intervals between strokes
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Bleed air for wing antice comes from what stage
Engine antice |
Mix of 6th and 10th stage
10th stage |
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If the wipers are used on a dry motor what will open
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The motor will stop
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How many heat sensors are contained in the window
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3
1 sensor control 1 overheat monitor 1 spare |
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Explain the windshield heater control logic
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On ground with 1 AC power source available-No WS heat
In flight with 1 AC power source available-Left WS heated only. If the left fails the right will heat |
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Following no more ice detection when will the system turn off
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5 minutes
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When are the air data sensor probes and TAT probes heated
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Whenever the engines are running
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Which slats receive icing protection
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Only the 3 outboard
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When does systems logic takeover icing protection
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1700 feet or 2 minutes after takeoff
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How many ADS are on the aircraft
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ADS 1,2,3=Headings
ADS 4=ISIS ADS5=FLT control (can't monitor) |
