Anti-ice, rain Flashcards
What is heated with Pneumatic air?
- Engine Cowl lip
- Leading edge slats
What is heated with electrical power?
- Pitot probes
- Alpha vanes
- Temperature probes
- Elevator pitot probes
- Flight deck windows
How are the inlet cowl valves controlled/operated?
Electrically/pneumatically
What does selecting the ENG ANTI-ICING reconfigure?
- The Electronic Engine Control (EECs) resets engine speed to approach idle
- The stall warning logic adjusts stick shaker and minimum maneuver speed bars on the airspeed indicator
What does the bright blue COWL VALVE OPEN annunciator mean?
- The valve is in transit
- The valve position disagrees with the related switch position
What indications are present when the Cowl Anti-Ice valves are fully open
- Dim COWL VALVE OPEN blue annunciators
- Green TAI (thermal anti-ice) displays on the N1 gauges
What is the indication if the COWL VALVE fails open with the switch off?
- Bright blue COWL VALVE OPEN annunciator
- Amber TAI indication in the N1 gauge
What will be the indication if there is an overpressure down stream of the Cowl Anti-Ice duct?
An amber COWL ANTI-ICE light
How are the Wing Anti-Ice valves operated?
2 AC motor operated valves
What is the maximum temperature for operation of Wing Anti-Ice?
10 C
Will the stall warning logic reset after WING ANTI-ICE has been selected on? Why?
No, the entire wing is not heated
What cockpit windows are not heated?
L/R 3
What is the indication that the cockpit windows are being heated?
A green ON light above the cockpit window switches
How do you test the window heat system if the green ON lights are not illuminated?
Select the PWR TEST switch
When will the OVERHEAT lights illuminate?
- When the temperature of the window exceeds a pre-determined limit
- When electric current is interrupted to that widow
What happens when the OVERHEAT light illuminates?
The current to that window is automatically stopped
What should you see in a widow overheat test?
- All OVERHEAT amber annunciator lights illuminate
- All ON green annunciator lights extinguish
How do you reset the WINDOW HEAT system?
Turn off all of the WINDOW HEAT switches and turn them all back on again
Are the static ports heated?
No
What does PROBE HEAT A power?
- Captain’s PITOT PROBE
- L ELEVATOR PITOT PROBE
- L ALPHA VANE
- TAT probe
What does PROBE HEAT B power?
- FO PITOT PROBE
- R ELEVATOR PITOT PROBE
- R ALPHA VANE
- AUX PITOT PROBE
