R **ON A/C 001-049, 051-099, 101-105,
TASK 21-31-51-400-006
Installation of the Outflow Valve 10HL (From Outside)
WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM_______ FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1. Reason for the Job__________________
Self Explanatory
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R R No specific No specific No specific No specific No specific No specific blanking capscircuit breaker(s) safety clip(s)access platform 1 m (3 ft. 3 in.)access platform 2 m (6 ft. 7 in.)access platform 3.4 m (11 ft. 2 in.) Torque Wrench : range 0.00 to 1.20 m.daN (0.00 to 9.00 lbf.ft)
B. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
R R R 6 6 6 6 6 6 6 gasket gasket gasket gasket gasket gasket gasket 21-31-04 08 -02021-31-04 08 -020A 21-31-04 08B-020 21-31-04 08B-020A21-31-04 08C-02021-31-04 08C-020A 21-31-04 08E-020
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C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-28-00-912-004 21-31-00-710-002 21-31-00-710-003 23-44-00-700-001 24-41-00-861-002 24-41-00-862-002 52-41-00-410-002 Electrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-Operational Test of the Pressure Control and MonitoringOperational Test of Manual Mode Selection and Manual Mode Pressure Control and Functional Test of Manual Mode Cabin Altitude/Outflow Valve Position IndicationOperational Test of the Service InterphoneEnergize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External PowerClose the Avionics Compartment Doors after Access
R **ON A/C 001-049, 051-061, 101-105,
21-31-51-991-004 Fig. 402
R **ON A/C 062-099,
R 21-31-51-991-004-A Fig. 402A
R **ON A/C 001-049, 051-099, 101-105,
3. Job Set-up__________
Subtask 21-31-51-860-060
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(b) The access platform is in position at the avionics compartment access-door 824 in zone 126.
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(c) The avionics compartment access-door 824 is open.
WARNING : OPEN THE ACCESS DOOR AND MAKE SURE IT STAYS OPEN.
_______ ATTACH A WARNING NOTICE TO THE ACCESS DOOR TO TELL PERSONS NOT TO CLOSE IT. THIS IS TO PREVENT ACCIDENTAL PRESSURIZATION OF THE AIRCRAFT BY THE AIR CONDITIONING SYSTEM IF ALL THE OTHER CABIN OPENINGS ARE CLOSED. PRESSURIZATION OF THE AIRCRAFT CAN BE DANGEROUS. IT CAN CAUSE A DOOR TO OPEN WITH EXPLOSIVE FORCE WHICH CAN CAUSE INJURY AND/OR DAMAGE.
(d)
The access platform is in position below the outflow valve area in zone 172.
(e)
The access platform is in position at the access panel 312AR.
(f)
The access panel 312AR is removed.
(g)
In the zone 312 the 600 ohm boomset is connected to the service interphone jack 13RJ.
(h)
In the cockpit:
1_ On the CAPT jack panel the 600 ohm headset is connected to the
related connector,
2_ On the overhead panel 50VU the ON legend on the SVCE INT OVRD
pushbutton switch is off,
3_ On the CABIN PRESS panel 25VU make sure that:
- the MODE SEL pushbutton switch is in the MAN position (the
MAN legend is on) and,
- the MAN V/S CTL switch is at the DN position.
4_ Make sure that the service interphone system is energized
(Ref. TASK 23-44-00-700-001).
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Subtask 21-31-51-865-096
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
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