S 173-031

 (7)  
Flush from the air supply through pitot line with dry filtered air, 20 to 30 psi, for 2 minutes.

 NOTE: Make sure that you can feel air come out of the line to show
____
 that line is not cross connected.

 S 433-032
 (8)  
Replace the plug on drain line No. 10.

 S 033-033

 (9)  
At STA 275 on the left side of main passenger cabin, remove the pressure cap from the pitot hose disconnected from the upper left pitot-static probe, PT connection.

 S 173-034

 (10)
 Flush from the air supply through the pitot line with dry filtered air, 20 to 30 psi, for 2 minutes.

 NOTE: Make sure that you can feel air come out of the line to show
____
 that line is not cross connected.

 S 433-035
 (11)
 Replace the pressure cap on the pitot hose disconnected from the upper left pitot-static probe.

 S 093-244

 (12)
 Remove the air supply from drain line No. 16 and replace the plug.

 G. Flush the First Officer's Pitot System
 S 283-340
 (1)  
Make sure that the upper right pitot-static probe, the right and center air data computers, the source select valve, and all of the drain assemblies are disconnected from the first officer's pitot system.

 S 493-245

 (2)  
In the electrical and electronics compartment, remove the plug from drain line No. 18 (Fig. 301) and connect the air supply.

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 S 033-040
 (3)  In the electrical and electronics compartment, remove the pressure
 cap from pitot hoses joined by the MS21916D5-4 reducer.
 S 173-041
 (4)  Flush from the air supply through the pitot line with dry filtered
 air, 20 to 30 psi, for 2 minutes.
 NOTE:____ Make sure that you can feel air come out of the line to show
 that the line is not cross connected.

 S 433-042
 (5)  
Replace the pressure cap on the pitot hoses joined by the MS21916D5-4 reducer.

 S 033-043

 (6)  
In the electrical and electronics compartment, remove the plug from drain line No. 22 (Fig. 301).

 S 173-044

 (7)  
Flush from the air supply through the pitot line with dry filtered air, 20 to 30 psi, for 2 minutes.

 NOTE: Make sure that you can feel air come out of the line to show
____ that the line is not cross connected.
 S 433-045
 (8)  
Replace the plug on drain line No. 22.

 S 033-046

 (9)  
In the electrical and electronics compartment, remove the pressure cap from the pitot hose disconnected from the right air data computer.

 S 173-047

 (10)
 Flush from the air supply through the pitot line with dry filtered air, 20 to 30 psi, for 2 minutes.

 NOTE: Make sure that you can feel air come out of the line to show
____ that the line is not cross connected.
 S 433-048
 (11) Replace the pressure cap on the pitot hose disconnected from the right air data computer.
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 S 033-049
 (12)
 At STA 400 in the right crawlway, remove the plug from drain line No. 5 (Fig. 301).

 S 173-050

 (13)
 Flush from the air supply through the pitot line with dry filtered air, 20 to 30 psi, for 2 minutes.

 NOTE: Make sure that you can feel air come out of the line to show
____
 that the line is not cross connected.

 S 433-051
 (14)
 Replace the plug on drain line No. 5.

 S 033-052

 (15)
 At STA 275 on the right side of main passenger cabin, remove the pressure cap from the pitot hose disconnected from the upper right pitot-static probe, PT connection.
　
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