Cold Weather Operations Flashcards
Anti-ice usage is considered by dispatch in flight planing for departure, enroute, and arrival based on ___________ weather
Forecast
Captain and dispatcher share a joint responsibility to consider application of _________________ penalties.
Wing anti-ice
Ice accumulation on unheated tail surfaces and wing surfaces inside of the engines may not melt before landing when destination temperature is below _________.
10 C
Oil pressure must be in the ___________ range before takeoff. Oil temperatures must be at or above __________ c to provide adequate heat for fuel deicing during takeoff.
Normal
50C
Engine anti-ice must be selected on during ground operations when outside air temperature is _________ or below and visible moisture is present
10c
To avoid losing lateral control on a slippery surface, both engines should be run-up together
N/A
Single engine taxi is authorized as long as taxi surface is not slippery and there is no risk of ice forming on the number 2 engine nacelle or sensor probe.
N/A
If engine anti-ice is selected on and the fault light remains illuminated, indicating the valve did not open, increase N2 by 5% on the associated engine.
N/A
On slippery surfaces, the use of the parking brake for engine run-ups is not recommended.
N/A
Differential braking is only available with the brakes released. The parking brake is not recommended, because when set, it is difficult to retard thrust to idle and release the parking brake in a timely manner.
N/A
Differential braking can be more effective than nose wheel steering during slippery conditions
N/A
Periodic engine run-ups are important even though engine anti-ice is on. The purpose is to shed ice before it accumulates to a point where it could do damage to the engine when ice sheds.
Ice may build up on engines while there appears to be no visible accumulation on other aircraft surfaces. This is due to a temp drop as ambient air enters the engine inlet.
N/A
When engine anti-ice is on, perform an engine run-up to a minimum of __________ % N1. Ice shedding is dependent on air loads which in turn are dependent on rotor speed.
50%
Brakes should be held _______________ during engine run-ups
Manually
During engine run-ups both engines should be run-up together to keep symmetrical thrust
N/A
The first engine run-up should be done as soon as ___________ but not more than ______________ minutes.
Practical
10 minutes
Additional run-ups should be preformed at intervals no greater than ___________ minutes.
10 minutes
Direct ground crews to remove low and high pressure air before selecting the DITCHING switch ON to prevent over pressurization of the cabin.
N/A
Do not select the APU BLEED switch ON until at least _______ minutes after the completion of deicing.
2 minutes
Do not use APU bleed air for the PACKS until ________ minutes after deicing is complete. A/C smoke and fumes may result.
5 minutes
After deicing in moderate to heavy freezing precipitation, every attempt should be made to keep both engines running continuously with engine anti-ice on.
N/A
If deicing near the APU inlet, shut down the APU as soon as practical for best cooling.
N/A
Wing check vantage point on the A320
Second window forward and six Windows aft emergency exit window.
Wing check best vantage point on the A319
Third window forward and sixth window aft the emergency exit window.
Once cleared for take off, run-up both engines to 50% N1. If no engine vibration noted, release brakes and continue takeoff. If significant vibration, clear the runway and complete another engine run-up. If vibration continues contact maintenance.
N/A
Prolonged operation in icing conditions, greater than light, is only appropriate in an emergency situation.
N/A
Engine anti-ice must be used during climb and cruise in icing conditions with temperatures at or above__________ C.
-40C SAT
The primary method of operating wing anti-ice is to use it as a ____________ system. The secondary method is to use it as an _____________ system.
Deice
Anti-ice
Prolonged operation in icing condition with flaps extended should be avoided.
N/A
If ice accumulates on heated surfaces, either the capacity of the anti-ice system has been exceeded or a possible anti-ice fault. Minimum speed should be
Clean configuration ____________
Configuration 1,2,3, Full __________
VLS +15
VLS +10
If ice build up is expected enroute on unheated surfaces, landing with flaps full, approach speed must not be lower than __________. Multiply landing distance by __________.
Landing flaps 3, approach speed must not be lower than __________. Multiply landing distance by ____________
VLS +5
1.1
VLS +10
1.15
If there is a possibility of ice accumulation in the flap area, leave flaps extended. Arrange to have aircraft inspected and decided.
N/A
Prohibited Operations:
Moderate and heavy freezing rain (FZRA OR FZRA+)
Heavy snow pellets and hail
Heavy ice pellets
Moderate ice pellets mixed with any other form of precip
Light ice pellets at certain temps mixed with other form of precip
If pilots can’t determine that all surface are clean of frozen precip
Braking action NIL
Takeoff prohibited if 1/2” of water, slush, snow or 4” dry snow
Runway Clutter and Contamination Levels
Wet Data, Level 1, Level 2, Takeoff Prohibited
Clean aircraft concept: All critical surfaces free of adhering frost, ice, snow, and slush. The following conditions:
Light coatings of frost, up to 1/8”, under the wing in the area of the fuel tanks.
Thin hoarfrost is acceptable on the upper surface of the fuselage provided that all vent and ports are clear.
N/A
Preform a wing check if:
The nose check is inconclusive prior to takeoff
The holdover time will be exceeded prior to takeoff
The holdover times are uncertain due to changing conditions
Completed within 5 minutes of beginning the takeoff roll
Parking brake must be set if either pilot is not in their seat.
Has to be completed by a pilot assigned to that flight
Type of decide fluids and colors:
Type 1. Red/Orange
Type II. Yellow/Straw
Type IV. Green
N/A
Ice pellet times cannot be extended by a wing check.
N/A
Heavy Snow
No hold over time exist
Must be decided with 100% type IV
Wing check is required before T.O.
Misc Code to Request SureHot+ Information
Misc AH
ACARS WX Code: BR
Mist
ACARS WX Code: CLR
Clear
ACARS WX Code: FG
Fog
ACARS WX Code: FZFG
Freezing Fog
ACARS WX Code: FZRA
Freezing Rain
ACARS WX Code: GR
Hail
ACARS WX Code: PL
Ice Pellets
ACARS WX Code: RA
Rain
ACARS WX Code: SN
Snow
ACARS WX Code: UP
Unknown Precipitation
Unknown precipitation type detected or SureHot+ not authorized to provide data at that station.
SureHot+
Definition or Abbreviation: LWE
Liquid Water Equivalent
SureHot+
Definition Abbreviation: HOT
Hold over time that anti-ice fluid can be expected to prevent adherence existing weather contaminates
Brakes should be set if winds are anticipated to be__________ mph including gust when parked at the gate.
40 mph
