COLD WEATHER AND ICING OPERATION Flashcards
Icing conditions may be expected in temp of less than…….and viz of ……..with……..
10 degrees / 1 mile or less / Visible moisture
*Icing conditions may be expected in temp of less than 10C and viz of 1 nm or less with Visible moisture.
During cruise, Eng A/ice shall be selected on in temp of ……
Below 10 and above -40 degrees
When does Eng A/ice need to be on during descent?
In icing conditions even with SAT below -40
What are the minimum speed and landing distance in extended icing conditions?
Significant ice accretion on non heated structure:
‐ Clean configuration, VLS +15 kt
‐ CONF 1, 2, 3, FULL, VLS +5 kt
Significant ice accretion on de-iced parts (WING ANTI ICE inop):
‐ Clean configuration, VLS +15 kt
‐ CONF 1, 2, 3, FULL, VLS +10 kt
For Landing Performance assessment, refer to QRH FPE-IFL.
When is FAN ICE SHEDDING procedure required?
On the ground with icing conditions but no freezing fog, airport temperature at +1 degree or below.
Freezing Fog: Viz less than 1000m.
What is the FAN ICE SHEDDING procedure?
Increase to 50% N1 for 10 seconds before T/O or every hour
On the ground, what is required if freezing fog is present?
Taxi in: Write the taxi time in the AML
Taxi out, if total taxi time exceeds 45 minutes apply the core ICE SHEDDING procedure
What is the max allowed cumulative taxi time in freezing fog?
45 mins
What is the definition of severe icing conditions?
5mm or more of ice accretion on the airframe
After pressing the button, it takes………for the window to be covered with rain repellant.
30 seconds
Cold conditions, the ground power should be used instead of the APU when OAT is ……….
-15 or lower
At -15°C or lower, IRS alignment needs….
15 minutes
What type of icing is acceptable on an aircraft surface?
Thin hoarfrost on the upper surface of the fuselage or the lower part of the wing (max 3 mm).
When deicing/anti icing fluid spraying is completed, APU Bleed on after…..
5 mins
Is the de/anti icing field part of the certificate of release?
No
Active frost occurs…..
at or below 0 degrees or below the dewpoint
Clear ice occurs ….
close to the freezing temperature
Cold soak can occur in ambient temp range of….and the acft structure temp..
-2 to +15, 0 or below
Freezing fog occurs in viz of……
less than 1 km