(16)
 Make sure the aileron control wheel is in the neutral position.

 S 862-020

 (17)
 Close all the lavatory doors when the airplane is parked.

 CAUTION:_______ DO NOT PREVENT THE MOVEMENT OF THE CONTROL COLUMN OR THE RUDDER
 PEDALS.  YOU CAN CAUSE DAMAGE TO THE CONTROL SYSTEM THE COLUMN
 OR THE RUDDER PEDALS CANNOT MOVE.

 NOTE: This will help to prevent the spread of a fire.
____
 S 622-027
 WARNING: WHEN THE PITOT STATIC PROBES ARE COVERED, MAKE SURE THAT
_______ CONDITION IS VISIBLE FROM THE GROUND. IN ADDITION, ATTACH A TAG TO THE LEFT CONTROL WHEEL IN THE FLIGHT DECK AS A REMINDER THAT PITOT STATIC PROBES ARE COVERED. FAILURE TO OBSERVE AND REMOVE COVERINGS OVER PITOT STATIC PROBES BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
 CAUTION: WHENEVER AN OPENING IS COVERED, MAKE SURE THAT CONDITION IS
_______ VISIBLE FROM THE GROUND. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
 CAUTION: MAKE SURE THE PITOT STATIC PROBE COVER IS IN GOOD WORKING
_______ CONDITION WITH NO EVIDENCE OF DAMAGE, ESPECIALLY FRAYING AROUND THE COVER OPENING. FRAYED FIBERS FROM THE COVER COMBINED WITH OTHER SUBSTANCES SUCH AS DIRT, GREASE AND FLUIDS CAN CAUSE OBSTRUCTION IN THE PROBE.
 (18) Put the covers on these components to prevent contamination from dirt, dust, debris, and volcanic ash:
 (a) Pitot static probes
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 (b)  
APU Exhaust

 (c)  
Engine inlet, fan exhaust and turbine exhaust

 S 622-028
 (19) Attach a red paper tag that has "PITOT PROBES COVERED" printed on it in black letters, to the top of the left control wheel in the flight deck.
 S 622-029
 WARNING:_______ WHEN THE STATIC PORTS ARE COVERED, MAKE SURE THAT CONDITION IS
 VISIBLE FROM THE GROUND.  IN ADDITION, ATTACH A TAG TO THE LEFT
 CONTROL WHEEL IN THE FLIGHT DECK AS A REMINDER THAT STATIC
 PORTS ARE COVERED.  FAILURE TO OBSERVE AND REMOVE COVERINGS
 OVER STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN
 AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD
 TO LOSS OF SAFE FLIGHT.

 CAUTION: WHENEVER AN OPENING IS COVERED, MAKE SURE THAT CONDITION IS
_______ VISIBLE FROM THE GROUND. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
 (20)
 Use 3M No. 471 yellow vinyl adhesive tape and orange barricade tape that has "REMOVE BEFORE FLIGHT" printed on it in black letters to cover the static ports in the following manner (see Fig. 204 for the locations of the static ports) to prevent contamination from dirt, dust, debris and volcanic ash.

 S 622-030

 (21)
 Use the following static port cover procedure (see Fig. 205 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 to remove dirt, dust, volcanic ash and other contaminants where you will put the 3M No. 471 yellow vinyl adhesive tape (see Fig. 205 Sheet 1).
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 (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. 205 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.
　
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