CAUTION: MAKE SURE THE PITOT 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 OR FLUIDS CAN CAUSE OBSTRUCTION IN THE PROBE.
(3)
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.
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 PITOT PROBES ARE COVERED, FAILURE TO OBSERVE AND REMOVE COVERINGS OVER PITOT 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.
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Pitot Static System Component Location 500
10-11-0 Figure 205 May 01/99
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Static Ports Cover Procedure
May 01/98 Figure 206 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 10-11-0 Page 209
Static Ports Cover Procedure 500
10-11-0 Page 210 Figure 206 (Sheet 2) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/98
(4)
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. 205 for the locations of the static ports).
(5)
Use the following static port cover procedure (see Fig. 206, Sheets 1 and 2, for illustrations of the static port convert 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 206, Sheet 1).
(b)
Place one end of an approximately 4-foot long piece of the orange barricade tape over the holes of the static port and secure the upper edge with a 5 inch piece of 3M No. 471 yellow vinyl adhesive tape (see Fig. 206, 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 206, 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. 206, Sheet 1, Step 4).
(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 206, 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 barricade tape (see Fig 206, Sheet, 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 206, Sheet 2, Step 8).
(6) Attach a red paper tag that has “STATIC PORTS COVERED” printed on it in black letters, to the left control wheel in the flight deck with wire.
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