Ice and Rain

Question 1

Definition of Icing Conditions

Answer 1

OAT (on the GND and T/O or TAT inflight) is 10C or below and:

• Visible moisture in any for is present such as clouds, fog visibility of one mile or less, rain, snow, sleet, and ice crystals, or
• When operation on ramps, taxiways, or runways where surface snow, ice, standing water, or slush maybe be ingested by engines, freeze on engines, nacelles, or engine sensor probes.

Question 2

Definition of Icing Conditions

Answer 2

OAT (on the GND and T/O or TAT inflight) is 10C or below and:

• Visible moisture in any for is present such as clouds, fog visibility of one mile or less, rain, snow, sleet, and ice crystals, or
• When operation on ramps, taxiways, or runways where surface snow, ice, standing water, or slush maybe be ingested by engines, freeze on engines, nacelles, or engine sensor probes.

Question 3

Engine Anti-Ice System manual mode:

Answer 3

Do NOT rely on visual airframe icing cues to select engine anti-ice ON.

Question 4

Engine and Wing Anti-Ice Temperature Limits Auto

Answer 4

None

Question 5

Engine and Wing Anti-Ice Operations (taxi out and takeoff)

Answer 5

the MCDU T/O DATASET MENU REF A/I must be set to ALL when OAT is 10C or below and icing conditions exist or are anticipated.

The engine and wing anti-ice systems operate automatically in case of ice encounter when the ICE PROTECTION Mode Selector is in AUTO.

Question 6

Engine Anti-Ice System manual mode:

Answer 6

Do NOT rely on visual airframe icing cues to select engine anti-ice ON.

Question 7

Engine and Wing Anti-Ice Temperature Limits Auto

Answer 7

None

Question 8

Engine and Wing Anti-Ice Operations (taxi out and takeoff)

Answer 8

the MCDU T/O DATASET MENU REF A/I must be set to ALL when OAT is 10C or below and icing conditions exist or are anticipated.

The engine and wing anti-ice systems operate automatically in case of ice encounter when the ICE PROTECTION Mode Selector is in AUTO.