Ice Protection

Question 1

The window heat control switches control heating to the:

Answer 1

Forward windshield only (FCOM 3.20.4, 3.10.3)

Question 2

Probe heat supplies heat to:

Answer 2

• 4 pitot-static probes
• 2 angle of attack probes (engine operating)
• 2 TAT (FCOM 3.20.4)

Question 3

WHAT WILL HAPPEN IF THE ENGINE 1 NACELLE ANTI-ICE SWITCH IS ON AND THE VALVE REMAINS CLOSED?

Answer 3

Anti ice valve remains closed.

EICAS Nacelle Anti ice Valve 1 MSG.

Valve light illuminates (FCOM 3.20.1)

Question 4

WHEN DO THE TAT PROBES RECEIVE ANTI-ICING PROTECTION?

Answer 4

In flight (FCOM 3.20.4)

Question 5

WHAT DOES THE EICAS ADVISORY MESSAGE HEAT P/S F/O MEAN?

Answer 5

Heater on the FO Pitot static side is not powered (FCOM 3.30.1)

Question 6

WHAT HAPPENS WHEN THE FIRST OFFICER’S WINDSHIELD AIR SWITCH IS ON?

Answer 6

Anti-fogging air flow from the flight deck conditioned air supply to right windshield (FCOM 3.20.4)

Question 7

If the EICAS msg HEAT R TAT is displayed on the ground, power is being applied to the right TAT probe. True or False

Answer 7

TRUE (FCOM 3.30.1)

TAT probe heat is failed,

or on the ground, TAT probe is heated

Question 8

WHEN SHOULD WING ANTI-ICE BE USED ON THE GROUND?

Answer 8

Never (FCOM SP.16.7 The wing anti-ice system may be used as a de-icer or anti-icer in flight only.)

Question 9

WHAT DOES THE EICAS ADVISORY MESSAGE HEAT L TAT MEAN?

Answer 9

L TAT probe heat is failed or on the ground TAT probe is heated. (FCOM 3.30.1)

Question 10

WHICH IS TRUE WITH THE NACELLE ANTI-ICE SWITCHES ON?

Answer 10

All of these:

nacelle anti-icing valves open

Green EICAS nacelle anti ice msg

Approach idle (FCOM 3.20.1)

Question 11

WHAT IS REQUIRED TO PREVENT WING DAMAGE AFTER LANDING, WITH THE WING ANTI-ICE SWITCH OFF, AND THE EICAS WAI VALVE RIGHT MESSAGE DISPLAYED?

Answer 11

Bleed duct on respective side needs to be isolated. ENGINE BLEEDs switch off (affected side), ISLN valve switch off (right) (QRH page 119)

Question 12

HEAT FOR WHICH WINDOWS IS CONTROLLED BY THE WINDOW HEAT SWITCHES?

Answer 12

Front only (Right or Left - CAPT or F\O switches) (FCOM 3.20.4)

Question 13

WHAT DOES THE EICAS MESSAGE HEAT FOLLOWED BY THE NAME OF THE PROBE MEAN?

Answer 13

Probe heat has failed, unpowered probe (FCOM 3.30.1)

Question 14

WHEN IS THE EICAS ADVISORY MESSAGE WAI VALVE LEFT DISPLAYED?

Answer 14

valve is not in the commanded position. (FCOM 3.30.1)