Ice and Rain Protection

Question 1

Conditions to turn on anti ice systems when ops in visible moisture with a RAT on MFD of…

Answer 1

+10°C or below

Question 2

Condition to illuminate P/S HTR OFF annunciator….

Answer 2

Pitot Static system selected ON, but failed current to any of the pitot and static heating elements

Question 3

How can ice be detected at night…

Answer 3

Red windshield anti ice system

Question 4

W/S AIR O’HEAT annunciator, means

Answer 4

Too much hot bleed air enters the windshield anti ice system (triggered at 149°C) when set to ON

Usually the installed solenoid valve should close and shut down the system.

Question 5

DC failure, what happens with the WS anti ice system….

Answer 5

Solenoid valve should fail safe open, means continuous flow of hot bleed air , windshield temperature control still possible by regulating air volume thru the volume knobs

Question 6

WS ANTI ICE OFF, but W/S O’HEAT annunciator on, means….

Answer 6

If 5 psi pressure is sensed on the duct the solenoid valve leaks and that is indicated via the annunciator.

Question 7

Using rain removal, what to do prior applying bleed air to windshield…

Answer 7

Open the augmenter doirs

Question 8

Describe the windshield alcohol system…

Answer 8

Utilizes a pump that supplies alcohol thru energized ejectors to both pilots windshields, lasts for about 10 min.

Question 9

ENG ANTI ICE annunciator has extinguisher, what conditions must be met to keep it OFF…

Answer 9

70% min N2, landing gear up

Question 10

Time needed for ENG ANTI IVE annunciator to extinguish after turning ENG ANTI ICE ON, takes max….

Answer 10

2 min

Question 11

ENG ANTI ICE annunciator goes ON steady for how long, after…
Goes ON flashing with MASTER CAUTION ON, after….

Answer 11

Steady: If icing conditions occur for min 1 min.

Flashing: after 2 min

All if anti ice system is not turned ON

Question 12

L or R ENG ANTI ICE annunciator light illuminates when…

Answer 12

Engine inlet temperature drops below +10°C

Question 13

Indications in cockpit that ENG ANTI ICE is operating…

Answer 13

1. Switch is ON
2. ITT rise
3. N1 and N2 decrease
4. ENG ANTI ICE switch light extinguishes

Question 14

MASTER CAUTION and WING ANTI ICE LIGHTS illuminate, what condition exists…

Answer 14

Bleed air temperature at the wing tip is too low

Question 15

Tail drive system, for what is the MANUAL MODE

Answer 15

Serves as a backup mode if AUTO MODE fails