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27 Cards in this Set
- Front
- Back
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What sources are used for ant-icing and de-icing
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Bleed air heat
Electric Heat |
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What uses bleed air for ice protection
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Engine lips and 3 outboard slats
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What uses electric heat for ice protection
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Pitot static system
Windshields Water lines Pressurization static ports |
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If an engine fails does the opposite wing and engine receive ice protection
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Yes, the crossbleed valve will open to provide protection for both wings, but the failed engine side will not receive lip heat
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How many ice detectors must be working for ice detection
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One, there are 2 for redundancy
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How long will the deicing remain on after ice is no longer detected
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5 minutes
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If "ICING" is set to OFF on the MCDU and icing is encountered on the takeoff roll will the deicing system turn on
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Not until 1700 feet or 2 minutes after takeoff
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Can the APU bleed air provide icing protection
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No
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What parts of the aircraft are protected from ice and rain
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Engine inlets
Wing leading edges Smart probes Windshields Water and waste drain systems |
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Is the ice protection system automatic
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Yes, under normal conditions
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How is ice detected in flight
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2 ice detectors, each detector has a vibrating sensor element that changes frequency when ice builds up around it. Once ice is detected the sensor element heats, the ice melts and the normal vibrating characteristics are restored. The heating process stops. The cycle repeats as ice builds up on the probes. The system will remain on for 5 minutes after ice is no longer detected
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How should the MCDU be set if there is icing conditions on the ground
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"ALL"
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What happens if there is a single bleed source failure
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Cross bleed opens
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What does selecting "ALL" on the MCDU provide
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ENG ANTI-ICE=ON when engines are running
WING ANT-ICE=ON at 40 knots wheel speed |
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If "ALL" is selected on the MCDU and the system is in auto at what point will the icing system become automatic
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1700 ft or 5 minutes after takeoff
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How does failure of one of the two AC power sources affect windshield heating
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Ground-No heating
Flight-No FO heat, but if Capt's side fails, FO's side will heat |
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What does the timer selection of the windshield wiper do
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Activates the wipers in 7 second intervals
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What happens if the wipers are operated on a dry surface
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They will stop and the wiper must be set to off and then on to recycle
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When do the smart probes heat
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Any time the engines are running
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Is there a test for the anti-ice system
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Yes, but only a MX function
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How should the aircraft be configured for deicing
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BLEEDS-OFF
STAB TRIM-NOSE DOWN FLAPS-UP ENG & APU-ON or OFF |
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How many sensors are provided for windshield heating
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3
1 is for heat control 1 is for overheat detection 1 is a backup |
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When is the windshield heated
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Under normal conditions always as long as AC power is available
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What supplies inlet temperatures to the FADEC
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T2 sensor
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Engine antice is provided by what stage bleed
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10th
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If "OFF" is set on the MCDU ice selection this inhibits what
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Ice protection up to 1700 and allows FADEC to set max takeoff thrust
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Below 1700 ft ice detection is controlled through what
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The MCDU provided its set to all, above 1700 provided AUTO is selected systems logic controls the ice detection and the MCDU has nothing to do with it
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