Subtask 34-22-25-865-052
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------105VU ELEC/CSM/G /EV AUTO/SPLY 7XE C01 122VU ANTI ICE/PROBES/3/PITOT 3DA3 Z16 122VU ANTI ICE/PROBES/3/STATIC 5DA3 Z14
Subtask 34-22-25-865-053
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
(1) Remove the slip on covers from the static probes 7DA3, 8DA3 and the pitot probe 9DA3 of the standby system.
R (2) 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).
(3)
Connect the ground pressure generator to the standby pitot probe with the ADAPTOR-CHARGING,PITOT PROBE.
(4)
Seal the opposite standby static probe with a piece of plastic (see CAUTION para.(5) below) and with the COVER-STATIC PROBE (98D34003500103).
(5)
Seal the drain holes:
CAUTION : WHEN YOU SEAL THE DRAIN HOLE IN THE PITOT PROBE, DO NOT
_______ SEAL THE HOLE DIRECTLY WITH THE COLORED ADHESIVE TAPE. ALWAYS PUT A PIECE OF PLASTIC ON THE HOLE AND USE THE TAPE TO ATTACH THE PLASTIC. IF YOU SEAL THE DRAIN HOLE DIRECTLY WITH THE ADHESIVE TAPE, THERE IS A RISK THAT SOME OF THE ADHESIVE WILL STAY ON THE HOLE AND COLLECT PARTICLES. THIS CAN SUBSEQUENTLY CAUSE BLOCKAGE OF THE HOLE AND THUS INCORRECT OPERATION OF THE PROBE.
Seal the drain holes of the pitot probe with a piece of plastic and/or colored adhesive tape of very bright color.
(6) Start the ground pressure generator.
4. Procedure
_________
Subtask 34-22-25-790-050
A. Leak Test
NOTE : You can do the test that follows for a static presssure of 697 hPa
____ (10,000 ft) and an impact pressure of 53.5 hPa (180 Kts) but it is not as accurate. After 5 minutes:
-
the change of altitude must not be more than 370 ft,
-
the change of speed must not be more than 10 Kts.
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-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the center instrument panel 401VU, on the ISIS indicator:
-set a barometric pressure of 1013 hPa.
2. On the ground pressure generator:
-
set a static pressure of 465.5 hPa (20,000 ft).
-
set an impact pressure of 176 hPa (320 Kts).
-close the electrovalves to isolate the static and pitot circuits of the aircraft from the ground pressure generator.
-slowly balance the pressure in the standby static and pitot circuits and open the electrovalves to get atmospheric pressure.
5. Close-up
________
Subtask 34-22-25-020-050After 5 minutes, on the ISIS indicator:
-
make sure that the change of altitudeis not more than 500 ft.
After 10 minutes:
-
make sure that the change of speed is not more than 20 Kts.
The rate of descent must not be morethan 6000 ft/mn.
A. Removal of the Ground Pressure Generator
(1)
Stop the ground pressure generator.
(2)
Disconnect the ground pressure generator.
(3)
Remove the adaptors from the standby static probe and the standby pitot probe.
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(4)
Remove the cover from the opposite standby static probe.
(5)
Remove the piece of plastic and the colored adhesive tape from the drain holes of the standby pitot probe.
(6)
Install the slip on covers on the standby static probes and the standby pitot probe.
Subtask 34-22-25-865-054
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 3DA3, 5DA3, 7XE
Subtask 34-22-25-860-054
C. Put the aircraft back to its initial configuration.
(1)
Do a reset of each ELAC:
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