Ice and Rain Protection Flashcards
How are the leading edge of the wings heated?
Bleed air
When does windshield heat automatically turn on?
When 2 AC sources are in use
What will happen to windshield wipers on a dry surface?
Stop or get stuck
When do ADS probes turn on automatically?
When the engine is started
If the ice protection panel button are pushed in and dark what are they set to?
Auto
What components get anti-ice from bleed air?
Engine inlets
Wing leading edge
What is the maximum windshield wiper speed?
250 KIAS
When is portable water dump disabled?
When the landing gear is down
On the ground.
If set to auto, when will ice protection turn on in flight?
If ice is detected
Where is ice protection system information shown?
Anti-Ice Synoptic page on MDF
And on EICAS
During cold weather operations of more than 30 minutes in icing conditions, what must be done with respect to fan vibration due to ice?
Increase thrust to 54% N1 for ice shedding
How many ice detectors are installed?
2
When is windshield heating automatically turned on?
When powered by 2 AC sources
On the ground 1 AC source for power up BIT
How long is the windshield heat power up BIT?
120 seconds after one AC source is applied
When will only the FO’s windshield heat be on?
If there is only one AC source and the captains side is INOP
After takeoff you get an EICAS message “AI WING VALV OPEN.” What does this mean on a clear day?
Anti ice is conducting a normal test.
10/10/10
10 minutes
10,000
10 F rise (60 seconds)
If ice protection is OFF, when is the earliest the anti-ice will turn on?
1700 AGL
2 minutes after takeoff
The APU is deferred and the captain elected to taxi out single engine. Which windshield is heated?
Neither after the power up BIT is completed
ATIS: OVC015 7/7
What should the MCDU anti-ice takeoff date be set to?
ENG
During a single engine taxi which probes / TATs are being heated?
All probes
How can we tell the anti-ice system what to do in auto mode?
By programming the T/O Dataset in the MCDU
When should we program ENG in the anti ice?
When OAT is below 10 C and there is visible moisture
present below 1700 AFE
How do we use ice protection if MCDU has failed?
Turn it to on
Where do we have ice protection?
Wings and Engine inlets
When is the soonest the wing anti ice will turn on set to ALL on takeoff?
40 KTS
We see anti ice wing valve open on a climb out of PHX. Is
this normal?
Yes the anti ice will conduct a test at 10,000 feet or 10
mins after departure for a 10F rise or 60 seconds
If we get a stall protection ice speed EICAS message, what speeds are used for landing?
Ice speeds
If you did not turn on ENG or ALL when would the soonest the anti ice would turn on?
2 minutes or 1700 AFE
When do we use the test knob?
Don’t touch it, it’s for maintenance
