S 865-313
(9)
Connect the auxiliary No. 2 static system to the input of the source select valve.
S 845-493
WARNING: FAILURE TO REMOVE THE VINYL ADHESIVE TAPE FROM THE STATIC PORTS
_______ BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED SENSING AND ALTITUDE SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
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CAUTION: MAKE SURE THAT YOU REMOVE ALL OF THE PIECES OF TAPE FROM EACH
_______ PITOT-STATIC PROBE. THE SYSTEM WILL NOT OPERATE CORRECTLY WHEN THE TAPE IS IN ITS POSITION.
(10) Remove the vinyl adhesive tape from these locations:
(a)
The forward static ports (S1) in the lower left pitot-static probe.
(b)
The aft static ports (S2) in the upper right pitot-static probe.
S 845-210
(11)
Examine the static ports for unwanted materials and rough locations on the inner and outer surfaces (Ref 34-11-01/601).
S 865-439
(12)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P6 Main Power Distribution Panel
1) 6D31 PROBE HEAT PITOT R
2) 6D32 PROBE HEAT AUX PITOT L
3) 6E01 PRIM T/E FLAP CONT AC
4) 6E02 PRIM T/E FLAP CONT DC
TASK 34-11-00-795-211
11. The Alternate Static System Leak Test (Full-Range)
__________________________________________________
A. Standard Tools and Equipment
(1)
Pneumatic Test Set
(a) Vacuum source, 10 to 30 inches of mercury (absolute)
(2)
Gages
(a) Static system test gage - required to indicate 10 to 30 inches of mercury (absolute) with accuracy of |0.1 (readable to |0.01) inch of mercury or |200 (readable to |20) feet.
(3)
Flow restrictors, control valves, cutoff valves, and pressure tape as required.
B. Access
(1) Location Zone 117 Electrical and Electronics Compartment, LH 121 Forward Cargo Container Compartment, Forward Half 122 Forward Cargo Container Compartment, Forward Half
C. Procedure
S 865-494
WARNING: WHEN THE STATIC PORTS ARE COVERED, MAKE SURE THAT CONDITION IS
_______ VISIBLE FROM THE GROUND. FAILURE TO OBSERVE AND REMOVE COVERINGS OVER STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS ON AIRSPEED SENSING AND ALTITUDE SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
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CAUTION:_______DO NOT EXTEND THE SEALS INTO THE STATIC PORTS. YOU CAN CAUSE DAMAGE TO THE SURFACE IN THE AREA WHEN YOU REMOVE THE SEALS.
(1)
Seal the left and right alternate static pressure ports with vinyl adhesive tape.
S 865-213
(2)
In the flight compartment, remove the standby airspeed indicator (N246) from the instrument panel (P2) (Ref 34-13-01/401).
S 865-214
CAUTION: DISCONNECT THE STANDBY AIRSPEED INDICATOR FROM THE ALTERNATE
_______ STATIC SYSTEM. YOU CAN CAUSE DAMAGE TO THE STANDBY AIRSPEED INDICATOR.
(3)
Remove the static hose from the standby airspeed indicator.
S 865-215
(4)
In the flight compartment, remove the standby altimeter (N141) from the instrument panel (P2) (Ref 34-13-02/401).
S 865-216
CAUTION: DISCONNECT THE STANDBY AIRSPEED INDICATOR FROM THE ALTERNATE
_______ STATIC SYSTEM. YOU CAN CAUSE DAMAGE TO THE STANDBY AIRSPEED INDICATOR.
(5)
Remove the static hose from the standby altimeter.
S 865-217
(6)
Connect the pneumatic test set to the alternate static system test fitting.
(a)
Connect the static (vacuum) source in the pneumatic test unit through the static control valve to the static cutoff valve.
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