Ice & Rain Protection Flashcards
- Anti-ice systems should be turned on in flight when operating in visible moisture with a MFD displayed RAT of:
D. +10°C (50°F) or below
The P/S HTR OFF annunciator:
A. Illuminates with the system selected when current fails to any main system pitot or static heating element
- At night, ice formation can be detected by:
B. Red windshield ice detection lights
- Regarding the windshield anti-ice system:
C. An overheat light, with the system ON, indicates excessive bleed-air temperature.
- Select the one correct statement concerning the W/S AIR O’HEAT annunciator:
A. If the annunciator illuminates when the system is operating, the solenoid valve should close, shutting off windshield air.
- Failure of the main DC electrical system results in:
B. Continuous flow of hot bleed air, with windshield temperature control possible only through regulation of the volume of bleed air permitted to the windshield
- The WIS AIR O’HEAT annunciator illuminates:
A. If 5-psi pressure is sensed in the duct with the WINDSHIELD BLEED AIR switch OFF
- When using rain removal:
D. The augmenter doors should be opened prior to applying bleed air on the windshield
- The windshield alcohol system:
D. Both A and C are correct
A. Is a backup system for the windshield anti-ice system
C. Utilizes a pump that supplies alcohol to the pilot windshield only for a maximum of 10 minutes
- Once necessary conditions are satisfied to extinguish the ENG ANTI-ICE annunciators, a minimum power setting to sustain the operation in flight is:
B. Anti-ice idle 70% N2 rpm, landing gear up
- The time for the ENG ANTI-ICE annunciators to extinguish after initiating operation in flight varies with outside air temperature at cruise or climb thrust settings. Normally, no more than:
B. 2 minutes
- The L or R ENG ANTI-ICE light illuminates if the engine inlet temperature of the engine drops below:
B. 10°C (50°F)
- In flight, cockpit indications that the engine anti-ice system is operating is:
C. ITT rise, Ny and N2 decrease, and the ENG ANTI-ICE switchlights) extinguish after a few minutes
- If the MASTER CAUTION RESET switch-light and the WING ANTI-ICE switchlights illuminate:
A. Bleed-air temperature at the wingtip is too cold
- When using the TAIL DEICE boots:
D. MANUAL MODE serves as a backup if AUTO mode fails