S 422-029

 (14)
 For the alternate and dedicated static ports use the following static port cover procedure (see Fig. 202 Sheets 1 and 2 for illustrations of the static port cover placement procedure).

 WARNING: DO NOT PLACE 3M NO. 471 YELLOW VINYL ADHESIVE TAPE OVER
_______ THE HOLES OF THE STATIC PORTS.
 (a)  
Clean the area around each static port with aliphatic naphtha or equivalent, and a clean dry rag where you will put the 3M No. 471 yellow vinyl adhesive tape (see Fig. 202 Sheet 1).

 (b)  
Place one end of a 3-foot piece of the orange barricade tape over the holes of the static port and secure the upper edge with 5 inches of 3M No. 471 yellow vinyl adhesive tape (see Fig. 202 Sheet 1, Steps 1 and 2).

 NOTE: Smooth the 3M No. 471 yellow vinyl adhesive tape on the
____ airplane surface to make sure the bond is satisfactory.
 1)  Do not put vinyl adhesive tape over the holes of the static ports.
 (c)  
Put a 5-inch piece of 3M No. 471 vinyl adhesive tape on each vertical edge of the barricade tape overlapping the first strip of adhesive tape (see Fig. 202 Sheet 1, Step 3).

 (d)  
Put an 8-inch piece of 3M No. 471 vinyl adhesive tape horizontally over the barricade tape below the static port holes, overlapping the two vertical strips of adhesive tape (see Fig. 202 Sheet 1, Step 4)

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MAINTENANCE MANUAL

 (e)  
Carefully grasp the free section of the barricade tape and fold it back up against the surface of the airplane. Place an 8-inch strip of the No. 471 vinyl adhesive tape horizontally over the back side of the barricade tape overlapping the lower half of the first 8-inch strip of No. 471 vinyl adhesive tape (see Fig. 202 Sheet 2, Steps 5 and 6).

 (f)  
Allowing the barricade tape to stream down, place an 8-inch strip of 3M No. 471 yellow vinyl adhesive tape horizontally over the barricade tape half way down the length of the barricade tape (see Fig. 202 Sheet 2, Step 7).

 (g)  
Place an 8-inch strip of 3M No. 471 yellow vinyl adhesive tape horizontally over the lower end of the barricade tape (see Fig. 202 Sheet 2, Step 8).

 S 422-025
 (15)
 Attach a red paper tag that has "STATIC PORTS COVERED" printed on it in black letters, to the top of the left control wheel in the flight deck with wire.

 S 492-021

 (16)
 Install the cover on the angle of attack sensor.

 S 492-034

 (17)
 Install the cover on the total air temperature (TAT) probe.

 S 862-014

 (18)
 Make sure the airplane center of gravity is forward of 33% MAC.

 S 622-036

 (19)
 If the airplane will be parked for more than three days, do these steps:

 (a)  
Drain the potable water system (AMM 12-14-01/301).

 (b)  
Service the toilet tanks (AMM 12-17-01/301).

 G. Put the Airplane Back In Its Usual Condition for Return to Service
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MAINTENANCE MANUAL

PITOT
INLET

PITOT
INLET

Pitot-Static System - Component Location
Figure 201

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H36624
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747-400 MAINTENANCE MANUAL
STATIC PORT
5-INCH STRIP OF 
VINYL ADHESIVE 
TAPE 
BARRICADE 
TAPE 
　
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