CAUTION: DO NOT OPERATE ANY HEATER FOR MORE THAN 5 MINUTES.
_______ YOU CAN DECREASE THE LIFE OF THE HEATER IF YOU LET IT STAY ON.
 (e)  Put the PITOT-STATIC A switch in the on position.
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 (f)
Make sure only the L ALPHA VANE light goes off.

 WARNING:_______DO NOT TOUCH THE HEATERS TO KNOW THEY ARE ON. FEEL THE AIR CLOSE TO THE HEATERS TO KNOW THEIR TEMPERATURE. THE HEATERS CAN GET VERY HOT AND CAUSE INJURY IF YOU TOUCH THEM.

 (g)
Make sure only the left alpha vane heater gets hot.

 (h)
Open the ALPHA VANE HTR - L circuit breaker on the P18 panel.

 (i)
Make sure the L ALPHA VANE light comes on.

 (j)
Put the PITOT STATIC A switch in the off position.

 S 865-033
 (3)
Close the ALPHA VANE HTR - R circuit breaker on the P18 panel.

 S 715-032

 (4)
Do a test of the heater in the right alpha vane.

 (a)
Put the PITOT-STATIC A switch in the on position.

 (b)
Make sure that the R ALPHA VANE light stays on.

 (c)
Make sure that the right alpha vane heater stays off.

 (d)
Put the PITOT-STATIC A switch in the off position.

 CAUTION: DO NOT OPERATE ANY HEATER FOR MORE THAN 5 MINUTES.
_______ YOU CAN DECREASE THE LIFE OF THE HEATER IF YOU LET IT STAY ON.
 (e)
Put the PITOT-STATIC B switch in the on position.

 (f)
Make sure only the R ALPHA VANE light goes off.

 WARNING:_______DO NOT TOUCH THE HEATERS TO KNOW THEY ARE ON. FEEL THE AIR CLOSE TO THE HEATERS TO KNOW THEIR TEMPERATURE. THE HEATERS CAN GET VERY HOT AND CAUSE INJURY IF YOU TOUCH THEM.

 (g)
Make sure only the right alpha vane heater gets hot.

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 (h)  
Open the ALPHA VANE - R circuit breaker on the P18 panel.

 (i)  
Make sure the R ALPHA VANE light comes on.

 (j)  
Put the PITOT-STATIC B switch in the off position.

 H. Put the airplane back to its usual condition.
 S 865-037
 (1)  
Make sure these circuit breakers on the P18 panel are closed:

 (a)  
ALPHA VANE HTR - L

 (b)  
ALPHA VANE HTR - R

 (c)  
Below HEATERS - PITOT STATIC:
 1) CAPT - UPPER L
 2) CAPT - LWR R
 3) F/O UPPER R
 4) F/O LWR L
 5) ELEVATOR PITOT - L
 6) ELEVATOR PITOT - R
 7) TEMP PROBE

 (2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 415-038

 (3)  
Install the caps on the pitot tubes and the air temperature probe if it is necessary.

 S 865-015
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 CONTROL CABIN WINDOW ANTI-ICING STYSTEM -
_________________________________________ DESCRIPTION AND OPERATION
_________________________
 1.  General_______
 A.  Windows No. 1, 2, 4, and 5 on each side of the control cabin are provided with electrical heating window anti-icing and defogging (Fig. 1). Heating of the control cabin windows also improves the impact strength of the windows and is used for birdproofing the windows when flying at altitudes where bird strikes are possible. Power to the left No. 1, 4, and 5 windows and the right No. 2 window is supplied from the left generator and the right No. 1, 4, and 5 and left No. 2 window is supplied from the right generator. In the event of a power failure from one generator, the No. 2 window on that side and the No. 1, 4, and 5 windows on the other side will still be supplied power from the other generator, thus ensuring that reasonable forward vision from each side will be maintained.
　
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