Ice and Rain Protection Flashcards
What is the source of heating for wing and cowl anti-ice
6th or 10th stage bleed air
When is cowl anti-ice required to be ON during ground operations
OAT ≤ 10°C in visible moisture in any form (fog with visibility 1 sm or less, rain, snow, sleet, ice crystals)
OAT ≤ 10°C on contaminated ramps, taxiways or runways
When is cowl anti-ice required to be ON during flight
When icing condition exist or are anticipated, or
When ICE is annunciated by the ice detection system.
Icing conditions exist in flight when TAT is 10°C or below and visible moisture in any form is encountered except when the SAT is -40°C or below.
When is wing anti-ice required to be ON during ground operations
OAT ≤ 5°C in visible moisture (fog with visibility 1sm or less, rain, snow, sleet, ice crystals),
OAT ≤ 5°C on contaminated runways.
If Type II, Type III or Type IV deicing fluid has been applied, select wing anti-ice ON just prior to thrust increase for takeoff.
When is wing anti-ice required to be ON during flight operations
When icing conditions exist and airspeed is less than 230 KIAS, or when ICE is annunciated by the ice detection system.
Icing condition exist in flight when TAT is 10°C or below and visible moisture in any form is encountered, except when SAT is -40°C or below.
What will indicated a satisfacory test when the ICE DET TEST switch light is pressed?
ICE switch light illuminates
ICE caution message is displayed on EICAS
ADS HEAT TEST OK advisory message id displayed on EICAS
What is the purpose of the Wing A/I cross-bleed switch
To allow the bleed air from one engine to anti-ice the opposite wing
What occurs with the Windshield Heat on LOW
All 4 panels are heated to 24°C
What occurs with the Windshield Heat on HIGH
Side windows are heated to 24°C and both windshields are heated to 41°C
When should the Windshield Heat be switched OFF?
When OAT is 30°C or above
