Flashcards in Winter Ops Deck (6)
How much frost is allowed under wing
When must cold wx preflight be preformed
OAT 5° C or less
Wing fuel temp 0°C or less
Atmospheric conditions conducive to icing
A/c parked overnight and may have been exposed to frost/ precip. Etc..
Any through flight where residual ice may be present
Cold soak ice suspected in fuel tank areas
What should you do if taxing in icing conditions for > 30 mins or fan vibration is detected
Run each engine up individually to 54% n1 for 30 seconds
When taking off in icing conditions...
Takeoff power must be set to 54% n1 for 30 seconds or until fan vibration is normal
What do you do if you suspect Ice accretion on fan blades in flight
Reduce one thrust lever at a time towards idle then advance to min of 70% n1 for 10-30 seconds