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27 Cards in this Set

  • Front
  • Back
What sources are used for ant-icing and de-icing
Bleed air heat
Electric Heat
What uses bleed air for ice protection
Engine lips and 3 outboard slats
What uses electric heat for ice protection
Pitot static system
Water lines
Pressurization static ports
If an engine fails does the opposite wing and engine receive ice protection
Yes, the crossbleed valve will open to provide protection for both wings, but the failed engine side will not receive lip heat
How many ice detectors must be working for ice detection
One, there are 2 for redundancy
How long will the deicing remain on after ice is no longer detected
5 minutes
If "ICING" is set to OFF on the MCDU and icing is encountered on the takeoff roll will the deicing system turn on
Not until 1700 feet or 2 minutes after takeoff
Can the APU bleed air provide icing protection
What parts of the aircraft are protected from ice and rain
Engine inlets
Wing leading edges
Smart probes
Water and waste drain systems
Is the ice protection system automatic
Yes, under normal conditions
How is ice detected in flight
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
How should the MCDU be set if there is icing conditions on the ground
What happens if there is a single bleed source failure
Cross bleed opens
What does selecting "ALL" on the MCDU provide
ENG ANTI-ICE=ON when engines are running
WING ANT-ICE=ON at 40 knots wheel speed
If "ALL" is selected on the MCDU and the system is in auto at what point will the icing system become automatic
1700 ft or 5 minutes after takeoff
How does failure of one of the two AC power sources affect windshield heating
Ground-No heating
Flight-No FO heat, but if Capt's side fails, FO's side will heat
What does the timer selection of the windshield wiper do
Activates the wipers in 7 second intervals
What happens if the wipers are operated on a dry surface
They will stop and the wiper must be set to off and then on to recycle
When do the smart probes heat
Any time the engines are running
Is there a test for the anti-ice system
Yes, but only a MX function
How should the aircraft be configured for deicing
How many sensors are provided for windshield heating

1 is for heat control
1 is for overheat detection
1 is a backup
When is the windshield heated
Under normal conditions always as long as AC power is available
What supplies inlet temperatures to the FADEC
T2 sensor
Engine antice is provided by what stage bleed
If "OFF" is set on the MCDU ice selection this inhibits what
Ice protection up to 1700 and allows FADEC to set max takeoff thrust
Below 1700 ft ice detection is controlled through what
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