Icing Flashcards
(29 cards)
What is the OAT temperature range requiring TO DATASET MENU on MCDU to be set to ENG on the ground
OAT between 5-10 C
What is the temp limit for anti-icing system automatic operation
No limit
What is the OAT temperature range requiring TO DATASET MENU on MCDU to be set to ALL on the ground
OAT below 5C
When must TO DATASET MENU on MCDU to be set to ENG on the ground
OAT between 5-10C and:
- any possibility of encountering visible moisture up to 1,700 ft AFE
- when operating on ramps, taxiways, or runways where contaminants can be ingested by the engines or freeze on surfaces
When must TO DATASET MENU on MCDU to be set to ALL on the ground
When OAT is below 5C and:
- any possibility of encountering visible moisture up to 1,700 ft AFE
- when operating on ramps, taxiways, or runways where contaminants can be ingested by the engines or freeze on surfaces
How does anti-ice system operate in flight
Automatically if you encounter any icing provided all detectors are working and in AUTO mode.
What must the crew do if one or more ice detectors are failed
Must set the mode selector to ON when icing conditions exist or are anticipated below 10C TAT with vis moisture
For takeoff in icing conditions, what power setting must be set, and for how long, prior to final takeoff power
Approximately 54% N1 for 30 sec or until fan vibration level returns to normal.
When must a cold weather preflight inspection be performed
- if the OAT is 5C or less, or
- the wing fuel temp is 0C or less, or
- atmospheric conditions conducive to icing exist, or
- the aircraft has remained overnight and may have frozen contaminants due to frost or precip
- if there is residual ice brought in from previous flight, or
- cold soak ice is suspected in the fuel tank area
After a cold weather start, how long can oil press remain below min
2 mins
When must an immediate shutdown be conducted after a cold weather start
If there is no oil pressure by the time idle rpm is achieved
How long must you wait after completion of deicing procedures before switching ON the Engine Bleeds
3 mins
What is the recommended crosswind limit for runway with compacted snow
20kts
What is the recommended crosswind limit for runway with standing water/slush/wet snow/ dry snow
18kts
What is the recommended crosswind limit for runway with ice
12 kts
Which autobrake setting is used in icing conditions
MED or acars
When are ILS critical areas protected
When ceiling is <2 sm visibility
What are standard takeoff mins
1 sm or 5000 RVR
When standard takeoff mins or greater are used, which RVR is controlling
Touchdown zone if available
How many RVR reports are required if taking off with RVR below 1600
Min of 2 operative
What equipment is required for a takeoff with TDZ RVR 1600 or 1/4 sm vis
Any of these.
HIRL
CL
RCLM
Any other lights or marking that provide visual reference.
What equipment is required for a takeoff with TDZ 1200, MID 1200, ROLL 1000
Daylight:
Serviceable RCLM or HIRL or CL
Night: HIRL or CL
What equipment is required for a takeoff with TDZ 1000, MID 1000, ROLL 1000
CL, or
HIRL and serviceable RCLM
What equipment is required for a takeoff with TDZ 600, MID 600, ROLL 600
Both:
HIRL
CL
