Adverse Weather Flashcards
Slush, standing water, or deep snow reduces the airplane takeoff performance because of _____ and _____
increased rolling resistance
reduced tire-to-ground friction
(A slippery runway, wet, compact snow, ice,
increases stopping distance during a rejected takeoff)
Icing conditions exist when OAT ____ or TAT ____ is ____, and any of the following exist:
_____ or _____
on the ground, in flight, 10°C or below
- visible moisture (visibility of one statute mile (1600 m) or less
- ice, snow, slush, or standing water is present on the ramps, taxiways, or runways
Nacelle anti–ice must be selected ON _____ after all engines are started and remain on during all ground operations when icing conditions exist or are anticipated except when _____
immediately
temperature is less than -40°C OAT
If departure taxi route is through ice, snow, slush, or standing water in low temperatures or if precipitation is falling with temperatures below freezing, _____
taxi out with the flaps up
When nacelle anti-ice is required and the OAT is ______, do an engine run up, as needed, to minimize ice build-up.
Run-up to a minimum of ______ for approximately ______ at intervals no greater than ______
3°C or below
60% N1
30 seconds
30 minutes
De-icing / Anti-icing cockpit preparation procedure
APU ….As needed
Flaps…UP
Thrust levers …Idle
PACK control selectors ….OFF
APU bleed air switch (APU running) …OFF
After de-icing / anti-icing is completed:
APU bleed air switch (APU running) ….ON
Wait approximately one minute after de-icing:
Pack control selectors ….NORM
Visually check _____ and _____ from one of the following locations: (2)
The following “representative surfaces” can be used for this check: (3)
wing leading edge and control surfaces
- Over head escape hatch
- L-1 Door
- Wings
- Engines
- Horizontal stabilizer
Takeoff With De-icing/Anti-icing Fluids:
Is use of TO1 or TO2 permitted?
Is assumed temperature permitted?
What modifications are made to the takeoff profile?
Yes
No
None
Cold Weather Takeoff Procedure:
Do the normal Takeoff Procedure with the following modifications:
When nacelle anti-ice is required and the OAT is 3°C or below, the takeoff must be preceded by a static engine run-up to a minimum of 60% N1 for approximately 30 seconds duration and confirm stable engine operation before the start of the takeoff roll
Nacelle anti-ice must be ON during all flight operations when _____, except when _____
When operating in areas of possible icing, activate nacelle anti-ice _____ entering icing conditions
icing conditions exist or are anticipated
temperature is below –40°C SAT
before
Do not rely on airframe visual icing cues before activating nacelle anti-ice. Use the temperature and visible moisture criteria because late activation of engine anti-ice _______
may allow excessive ingestion of ice
and result in engine damage or failure
Do not use nacelle anti-ice when TAT is _____
above 10°C
Avoid prolonged operation in _____ icing
conditions
moderate to severe
During flight in moderate to severe icing conditions for prolonged periods or when fan icing is suspected due to _____, the fan blades must be cleared of any ice.
Do the following procedure every ______ on all
engines, one engine at a time: increase thrust to _____ for _____
high engine vibration
10 minutes
a minimum of 70% N1
10 - 30 seconds
Ice accumulation on __(4)__ may be used as an indication of structural icing conditions and the need to turn on wing
anti-ice
flight deck window frames
windshield center post
windshield wiper arm
side windows
The wing anti-ice system may be used as a de-icer or anti-icer. The primary method is to use it as a _____
de-icer
Do not use wing anti-ice __(when)__
Wing anti-icing is not effective with _____
TAT is above 10°C
leading edge flaps extended
When the temperature is colder than ISA, true altitude will be _____ than indicated altitude
Altimeter errors become significantly larger when the surface temperature approaches _____
lower
-30°C or colder
An altitude correction due to cold temperature is not needed for the following conditions: (2)
- while under ATC radar vectors
* when maintaining an ATC assigned flight level (FL)
Apply cold temperature altitude corrections to all published minimum ____, ____, and ____ altitudes, including _____
Advise ATC of the corrections
departure, enroute, approach
missed approach
• MDA/DA settings should be set at the corrected minimum altitudes for the approach
(The corrected altitude must always be greater than
the published minimum altitude)
After prolonged operation in icing conditions with the flaps extended, or when an accumulation of airframe ice is observed, or when operating on a runway contaminated with ice, snow, slush, or standing water: _____
Do not retract the flaps to less than flaps 25 until the flap areas have been checked to be free of contaminants
Consider doing the Cold Temperature Altitude Corrections Supplementary Procedure in the FCOM when altimeter errors become appreciable, especially where ____ exist near airports in combination with very cold temperatures of ____.
Also en route minimum altitudes and/or flight levels where ____. In some cases corrections may be appropriate for temperatures between ____
high terrain and/or obstacles
-30°C or colder
terrain clearance is a factor
0°C and -30°C
{FCTM 1.36}
