R standby pitot probe.
R 1EFF : 201-212, 214-220, 1 34-21-00Page 514 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-212, 214-220,
TASK 34-21-00-720-002
Functional Test of the Standby Altimeter
1. Reason for the Job
__________________
To make sure that the standby altimeter and the metric altimeter operate
correctly with information from the ground pressure generator.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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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) 98D10103500001 1 COVER-STATIC PROBE 98D34003500000 1 ADAPTER COVER-STATIC PORT
B. Referenced Information
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REFERENCE DESIGNATION
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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 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 34-21-00-860-052
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
Take the applicable safety precautions before you open the LGCIU circuit breakers (Ref. TASK 32-00-00-860-001).
(3)
Precautions
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).
(4) Remove the slip on covers from the L and R static probes 7DA3 and 8DA3 of the standby system.
R (5) Connect the GENERATOR - GROUND PRESSURE MINI. 100 MB (1.45 PSI) TO R 1400 MB (20.3 PSI) to one standby static probe with the ADAPTER COVER-STATIC PORT (98D34003500100).
(6)
Seal the opposite standby static probe with the COVER-STATIC PROBE (98D34003500103).
(7)
Start the ground pressure generator and set a static pressure of 1013 mb.
(8)
Drain the standby air data system (Ref. TASK 12-24-34-600-001).
1EFF : 001-049, 051-099, 101-105, 151-199, 1 34-21-00Page 516 1201-212, 214-220, 1Aug 01/05 1 1 1CES 1 Subtask 34-21-00-865-053
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 34-21-00-865-054
C. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU NAV/STBY/ALTM 16FN F14
4. Procedure
_________
**ON A/C 001-049, 051-099, 101-105,
Subtask 34-21-00-720-051
A. Test of the Standby and Metric Altimeters
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