Ice & Rain

Question 0

What items operate by neumatics?

Answer 0

Wing anti-ice

Question 1

What items are operated by electricity?

Answer 1

Pitot, stall probe, RAT, elevator pitot

Question 2

What items operate with engine bleed?

Answer 2

Engine anti-ice

Question 3

Will ice and rain systems work with battery power?

Answer 3

No, they ALL require normal power

Question 4

Where is wing anti-ice provided?

Answer 4

3 of the wing slats (not outer most slat and not leading edge flap)

Question 5

Does engine cowl anti-icing require the engine bleed air switch to be on?

Answer 5

No

Question 6

How do you know TAI is on by looking at the engine display?

Answer 6

TAI is displayed in green over the N1 dials

Question 7

What must Engine ignition be selected to prior to and during engine anti-ice operation.

Answer 7

CONT

Question 8

What stage bleed air is used for engine anti-ice?

Answer 8

5 & 9, 5th stage primary, 8th auxiliary

Question 9

What happens if the TAI valve fails to open/close?

Answer 9

If the valve fails to open or close as selected, the COWL VALVE OPEN light will remain illuminated bright and the TAI on the upper display turns amber after a short delay.
If the light remains bright when the switch is OFF, the valve is open. Thrust on the affected engine should be reduced if possible to prevent cowl overheat.
If the light remains bright when the switch is ON, the valve is closed and icing conditions should be avoided.

Question 10

What does COWL ANTI-ICE mean?

Answer 10

A pressure sensor monitors the condition of the delivered bleed air.
If pressure is too high between the COWL ANTI-ICE VALVE and the cowl lip - the respective COWL ANTI-ICE light will come on.
When the COWL ANTI-ICE light is ON, the abnormal procedure directs the crew to retard thrust until the light extinguishes.

Question 11

Is the FMC displayed Automatically adjusted for anti-ice OR wing anti-ice?

Answer 11

No but the amber barber poles are

Question 12

What must be done after flight in icing conditions?

Answer 12

After flight in icing conditions, the Engine Fan blades must be inspected by one of the pilots.
T

Question 13

Does wing anti-ice need bleed air switches on?

Answer 13

Normally yes both but 1 engine can supply to all

Question 14

How are wing anti-ice valves powered?

Answer 14

The Wing Anti-ice Control Valves are motor operated (normal AC power) and do not require air pressure to function. These valves fail in position with a loss of power.

Question 15

What does L or R VALVE OPEN light mean?

Answer 15

Wing valve not in the correct position

Question 16

L1,R2,L3,L4,L5 are powered by which bus?

Answer 16

AC bus #1

Question 17

R1,L2,R3,R4,R5 are powered by which bus?

Answer 17

AC BUS#2

Question 18

What windows are operated by the FWD switch?

Answer 18

L1 & R1

Question 19

What windows are operated by the SIDE switch?

Answer 19

2,4,5 on both sides

Question 20

Window heat must be turned on at least X minutes before takeoff to ensure it is fully operational prior to flight.

Answer 20

10 minutes

Question 21

What’s special about the number 1 & 2 windows?

Answer 21

Electrical conductive coatings are installed on the outer panes of the #1 and #2 windows.
These coatings provide the Anti-ice protection.
This heat also ensures that fog cannot build up between the glass panes, and ensures maximum window strength to protect against bird strikes.

Question 22

When do the ON lights come on for the FWD windows?

Answer 22

1. The switch must be on
2. The temperature controller cycles the current to maintain the proper temperature, and the ON light illuminates only when the current is flowing.
   The ON light will extinguish if the window temperature reaches the normal operating temperature. Now turn on the right FWD window heat.

Question 23

How are side windows affected by sunlight?

Answer 23

In a similar manner, the Side window Temperature Controllers provide temperature control for the respective #2 windows.
On the ground when one side of the aircraft is in direct sunlight, the ON lights for the windows will cycle differently according to the necessary heat cycle.

Question 24

When do OVERHEAT lights come on?

Answer 24

If a Temperature Controller determines the temperature of a window exceeds 100 F (38C), the current will stop flowing and the OVERHEAT light will come on and the ON light will go out. The OVERHEAT light will activate the ANTI-ICE annunciator and Master Caution lights.

Question 25

How long does it take for window heat to reset and how do you reset?

Answer 25

The pilot should wait approximately 2 to 5 minutes for cooling before resetting the Window Heat. To reset an OVERHEAT, the pilot must cycle the respective switch to Off, then On. The OVERHEAT reset feature operates the same for all 4 Window Heat switches. If Window Heat will not operate - limit airspeed to 250 kts. below 10,000 feet.

Question 26

What does the PWR TEST button do?

Answer 26

Placing the test switch to PWR TEST bypasses the controllers and applies full power to the windows. All green ON lights should illuminate if the systems are operational. When the PWR TEST position is released, normal operation returns to the Window Heat system.

Question 27

What do amber pitot static lights mean?

Answer 27

The amber lights illuminate when the associated heater is not operating - due to a malfunction or if the associated control switch is OFF. The Master Caution lights and the ANTI-ICE annunciator light will illuminate with the illumination of any Pitot Heater lights.

Question 28

What systems are effected by CAPT PITOT?

Answer 28

Captain's Mach/Airspeed, Altimeter, IVSI, and Standby Flight Instruments. Cabin Pressurization, Cabin Altitude, and Cabin Differential Pressure Indicator

Question 29

What systems are effected by F/O PITOT?

Answer 29

F/O's Mach/Airspeed, Altimeter, and IVSI.

Question 30

What systems are effected by L or R ELEV PITOT?

Answer 30

Inputs to the elevator feel computer may be affected resulting in the illumination of the FEEL DIFF PRESS light.

Question 31

What systems are effected by L or R ALPHA VANE?

Answer 31

Angle of Attack input to the stall warning system, autothrottle, and/or autopilot may be affected

Question 32

What systems are effected by TEMP PROBE?

Answer 32

Inputs to ADC1 or ADC 2 may be affected. The TAT indicator may be unreliable

Question 33

What systems are effected by AUX PITOT?

Answer 33

Inputs to Standby Airspeed may be affected