5. Close-up
________ Subtask 34-10-00-860-071
A. Put the aircraft back to its initial configuration.
(1)
On the panels 301VU and 500VU, set the PFD and ND potentiometers to OFF.
(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
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AIR DATA/INERTIAL REFERENCE SYSTEM (ADIRS) - SERVICING
______________________________________________________
TASK 34-10-00-170-001
Flushing of the Principal Total Pressure Lines
1. Reason for the Job
__________________
Refer to the MPD TASK: 341300-07 R Refer to the MPD TASK: 341100-01
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific dry nitrogen source - 2 bars (29 psi)
No specific access platform 1.6 m (5 ft. 3 in.)
98D34103002000 1 ADAPTERS - AIR DATA SYSTEM FLUSHING
98D34103003000 1 ADAPTER, PITOT - PNEUMATIC CLEANER
98D34103004000 1 CLEANER - PITOT PROBE
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R 34-10-00-991-001 Fig. 301
3. Job Set-up
__________
(Ref. Fig. 301/TASK 34-10-00-991-001)
NOTE : The hose couplings are self-sealing.
____
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Routing of Pressure Lines
Figure 301/TASK 34-10-00-991-001
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1 1 Feb 01/98
1 1
1CES 1
Subtask 34-10-00-010-059
A. Get access to the Avionics Compartment
(1) Put the access platform in position in the zone 123 at the access door 812 (in the zone 122 at the access door 822).
(2) Open the access door: for ADM 19FP1 (19FP2): 812 (822).
**ON A/C 001-049, 051-099, 101-105, 151-199,
Subtask 34-10-00-860-051
B. Connect the Dry Nitrogen Source
(1)
Disconnect the quick-disconnect coupling from the ADM 19FP1 (19FP2).
(2)
Connect a ADAPTERS - AIR DATA SYSTEM FLUSHING 3-pin adapter (98D34103002100) to the total pressure hose. Then connect it to the dry nitrogen source - 2 bars (29 psi).
(3)
Connect the ADAPTER, PITOT - PNEUMATIC CLEANER (98D34103003000) to the dry nitrogen source - 2 bars (29 psi).
(4) Attach the hose to prevent movement. R **ON A/C 106-149, 201-299, 301-399, 401-499,
Subtask 34-10-00-860-051-A
B. Connect the Dry Nitrogen Source
(1)
Disconnect the quick-disconnect coupling from the ADM 19FP1 (19FP2).
(2)
Connect a ADAPTERS - AIR DATA SYSTEM FLUSHING 3-pin adapter (98D34103002100) to the total pressure hose. Then connect it to the dry nitrogen source - 2 bars (29 psi).
(3)
Attach the hose to prevent movement.
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**ON A/C ALL
4. Procedure_________
**ON A/C 001-049, 051-099, 101-105, 151-199,
Subtask 34-10-00-170-050
A. Flushing of the Total Pressure Line
(1) Blow the gas into the hose at a pressure of 2 bars (29 psi) for approximately 3 minutes.
(2) Put the pneumatic cleaner pitot adapter on the draining hole of the pitot probe 1(2) and blow the gas for approximately 30 seconds.
(3) Make sure that there is no contamination in the pressurized gas at the outlet of the pitot probe 1(2).
(4) Stop the flow of gas.
(5) Disconnect the dry nitrogen source.
(6) Remove the 3-pin adapter .
(7) Release the hose.
(8) Connect the quick-disconnect coupling to the ADM 19FP1 (19FP2).
NOTE : After the connection:____ - make sure that a colored ring is shown on the quick-disconnect coupling - pull the connectors to be sure that they are correctly attached.
R R R R R (9) Do a visual inspection only, of the quick disconnect fitting connection, by a second qualified mechanic, with a sign off by both mechanics.
NOTE : During heavy visits (C-check or higher) the Leak Test must be____ performed on every pitot and static system disturbed.
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