5-INCH STRIPS OF VINYL ADHESIVE TAPE
8-INCH STRIP OF VINYL ADHESIVE TAPE
STEP 3 STEP 4
PUT TWO 5-INCH STRIPS OF VINYL ADHESIVE PUT AN 8-INCH HORIZONTAL STRIP OF VINYL ADHESIVE
TAPE OVER THE SIDES OF THE BARRICADE TAPE, TAPE OVER THE BARRICADE TAPE BELOW THE STATIC
OVERLAPPING THE TOP STRIP OF ADHESIVE TAPE PORT HOLES OVERLAPPING, THE TWO VERTICAL STRIPS
Static Ports Cover Procedure
Figure 202 (Sheet 1)
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H36629
A
747-400
MAINTENANCE MANUAL
BARRICADE
TAPE
8-INCH STRIP OF
VINYL ADHESIVE
TAPE
STEP 5 STEP 6
CAREFULLY GRASP THE FREE SECTION OF PLACE AN 8-INCH STRIP OF VINYL ADHESIVE
BARRICADE TAPE, AND FOLD IT BACK TAPE HORIZONTALLY OVER THE BACK SIDE OF THE
AGAINST THE SURFACE OF THE AIRPLANE BARRICADE TAPE, OVERLAPPING THE LOWER HALF
OF THE FIRST 8-INCH STRIP OF ADHESIVE TAPE
8-INCH STRIP OF VINYL ADHESIVE TAPE
8-INCH STRIP OF VINYL ADHESIVE TAPE
STEP 7 STEP 8
PUT AN 8-INCH STRIP OF VINYL PUT AN 8-INCH STRIP OF VINYL ADHESIVE TAPE HORIZONTALLY OVER ADHESIVE TAPE HORIZONTALLY OVER THE BARRICADE TAPE HALFWAY DOWN THE LOWER END OF THE BARRICADE TAPE THE LENGTH OF THE BARRICADE TAPE
Static Ports Cover Procedure
Figure 202 (Sheet 2)
H36631
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747-400 MAINTENANCE MANUAL
S 842-030
WARNING:_______ FAILURE TO REMOVE COVERS FROM PITOT PROBES BEFORE FLIGHT MAY
CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING
SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
CAUTION: MAKE SURE THE PITOT-STATIC PROBE COVERS ARE 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.
CAUTION:_______REMOVE ALL COVERS. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
(1) Remove the covers from the following components:
(a)
Pitot probes
(b)
Engine inlet, fan exhaust, and turbine exhaust
(c)
Angle of attack sensor
(d)
Total air temperature (TAT) probe
(e)
If an ice detector probe is installed, remove the cover on the ice detector probe.
S 842-031
(2) Remove the "PITOT PROBES COVERED" tag from the left control in the flight deck.
S 842-032
WARNING: FAILURE TO REMOVE BARRICADE TAPE AND VINYL ADHESIVE TAPE FROM
_______ ALL OF THE STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
CAUTION:_______REMOVE ALL BARRICADE TAPE AND VINYL ADHESIVE TAPE. ENGINES SHOULD NOT BE OPERATED WITH COVERINGS IN PLACE BECAUSE THE COVERINGS CAN COME OFF AND DAMAGE THE ENGINES.
(3) Remove all barricade tape and vinyl adhesive tape from all of the static ports.
(a) Inspect each static port and if necessary use naphtha or equivalent to remove all tape residue, dirt and other contaminants around the port.
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