(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
(3)
Make sure that the work area is clean and clear of tool(s) and other items.
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Functional Test of the ISIS Indicator
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
R No specific 1 GENERATOR - GROUND PRESSURE MINI. 100 MB (1.45 PSI)
R TO 1400 MB (20.3 PSI) 36122 1 ADAPTOR-CHARGING,PITOT PROBE 98D10103500001 1 COVER-STATIC PROBE 98D34003500000 1 ADAPTER COVER-STATIC PORT
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
12-24-34-600-001 Bleeding of the Standby Air Data System 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 32-00-00-860-001 Flight Configuration Precautions with Electrical Power 32-00-00-860-002 Ground Configuration after Flight Configuration with Electrical Power
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3. Job Set-up
__________
WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
_______
YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.
Subtask 34-22-25-860-055
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
Obey the applicable safety precautions before you open the LGCIU circuit breakers (Ref. TASK 32-00-00-860-001).
(3)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001)
Subtask 34-22-25-865-055
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 105VU ELEC/CSM/G /EV AUTO/SPLY 7XE C01 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
Subtask 34-22-25-865-056
C. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU STBY/INST 5FN F12 105VU NAV/STBY/INST/BAT 23FN J01
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D. Connection of the Ground Pressure Generator
CAUTION : OBEY THESE PRECAUTIONS WHEN YOU DO THE TEST TO PREVENT DAMAGE
_______
TO INSTRUMENTS:
-PRESSURE SET MUST NOT BE MORE THAN 1050 hPa (31 in Hg) OR LESS THAN 115 hPa (3.39 in Hg)
-CHANGES IN PRESSURE MUST NOT BE MORE THAN 6000 FEET/MINUTE
-DO NOT SUDDENLY OPEN LINES TO AMBIENT AIR WHILE THE PRESSURE GENERATOR IS CONNECTED.
CAUTION : THE TOTAL PRESSURE IN THE PITOT SYSTEM MUST NEVER BE LESS THAN
_______ THE STATIC PRESSURE. THE DIFFERENCE BETWEEN THE PITOT AND THE STATIC PRESSURE CIRCUITS MUST NEVER BE MORE THAN 368 hPa (10.86 in Hg).
(1) Remove the slip on covers from the L and R standby static probes 7DA3, 8DA3 and the standby pitot probe 9DA3.
R (2) Connect the GENERATOR - GROUND PRESSURE MINI. 100 MB (1.45 PSI) TO R 1400 MB (20.3 PSI) to:
-
the L or R standby static probe with the ADAPTER COVER-STATIC PORT (98D34003500100).
-
the standby pitot probe with the ADAPTOR-CHARGING,PITOT PROBE.
(3)
Seal the opposite standby static probe with the COVER-STATIC PROBE (98D34003500103).
(4)
Start the ground pressure generator and set a static pressure of 1013 hPa (29,92 in.Hg).
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