Ice and Rain Protection Flashcards
Alternate static ports heated?
Heated to full, probe switches on
How many heaters in a pitot static probe?
2-One in the base and one in the head
Head is 1/2 heat on ground, full in flight
Base heat is full in flight only
AOA vanes heated?
Heated to full on the ground or in flight,
Probe switches on
TAT
Heated to full in flight only regardless of switch position
Not heated on ground
What position do the 14th stage SOV fail
Fail open
Anti Ice switch to NORM
NORM - valves modulate to main 107c +- 8deg
STBY - full open or closed to maitain 49c
TEST position of switch on BLEED AIR panel
Checks for continuity of the 14th stage loop and thermal switches
Anti Ice switch to NORM
NORM - valves modulate to main 107c +- 8deg
STBY - full open or closed to maintain 49c
Windows and windshield
De-icing of fronts 41 deg (LOW)- 56 deg (HI)
De-fogging of sides 41 deg (LOW and HI)
What provides control and monitoring of the probe and sensor heating
Air Data Sensor Heater Controllers (ADSHC)
What position do the cowl anti ice valves fail
Fail open
What position does the 14th stage isol valve fail
Fails closed
What is needed to control the 14th stage isol valve
14th stage bleed air and electric
How is engine nose cone anti iced
Engine oil
What position would the pressure regulating valves fail in
Closed
