W DOC AIRBUS | AMM A320F

Installation of the Pitot Probe

TASK 34-11-15-400-001-A
Installation of the Pitot Probe

WARNING: MAKE SURE THAT THE CIRCUIT BREAKERS RELATED TO THE WEATHER RADAR ARE OPENED, SAFETIED AND TAGGED.
WARNING: BEFORE YOU OPEN PHC CIRCUIT BREAKERS 2DA1(2,3), OPEN PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3). IF YOU DO NOT OBEY THIS SEQUENCE: - THE PROBES WILL BECOME TOO HOT. - THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
CAUTION: IF THERE WAS AN AIRSPEED OR ALTITUDE DISCREPANCY REPORT ON THE PREVIOUS FLIGHT, DO A RESET OF THE TWO ELAC'S (OFF-ON OF THE ELAC 1 AND 2 PUSHBUTTON SWITCHES ON THE OVERHEAD PANEL) WITH THE THREE HYDRAULIC SYSTEMS DEPRESSURIZED.
ZONE: 125
ZONE: 126
FIN: 9DA1
FIN: 9DA2
FIN: 9DA3
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 1M(3 FT)
No specific
Torque wrench: range to between 0.90 and 0.73 m.daN (79.65 and 64.60 lbf.in ) T
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
125
LATERAL AVIONIC COMPARTMENT
126
LATERAL AVIONIC COMPARTMENT
FOR [9DA1] (PROBE-PITOT, 1)
FOR [9DA3] (PROBE-PITOT, 3)
812
FOR [9DA2] (PROBE-PITOT, 2)
822
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
4
GASKET
AIPC 34-11-01-03-040
4
GASKET
AIPC 34-11-81-03-020
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
TASK 20-28-00-912-803-A
Bonding Surface Preparation
TASK 30-31-00-710-001-A
Operational Test of the Probe Ice Protection
TASK 34-11-15-200-001-A
Inspection/Check of the Pitot Probe
TASK 34-11-15-710-001-A
Test of the Pitot Probe without the CFDS
TASK 52-41-00-010-002-A
Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A
Close the Avionics Compartment Doors after Access
F Pitot Probe ** ON A/C NOT FOR ALL
F Pitot Probe ** ON A/C NOT FOR ALL
F Illustration of the Quick-Disconnect coupling
F Check of the Quick-Disconnect Coupling
3. Job Set-up
Subtask 34-11-15-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) On the ADIRS CDU, on the panel 20VU, make sure that the three OFF/NAV/ATT selector switches are at OFF.
   (2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position at zone 125 to get access to pitot probes 1 and 3 and at zone 126 to get access to pitot probe 2.
   (3) Make sure that the access doors are open (Ref. AMM TASK 52-41-00-010-002):
     (a) FOR [9DA1] (PROBE-PITOT, 1), [9DA3] (PROBE-PITOT, 3)
812
     (b) FOR [9DA2] (PROBE-PITOT, 2)
822.
   (4) Make sure that the protective covers of the sensors and probes (AOA, static, Pitot and TAT) are removed.
Subtask 34-11-15-860-050-B ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) On ADIRS MSU panel 41VU, make sure that the three OFF/NAV/ATT selector switches are at OFF.
   (2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position at zone 125 to get access to pitot probes 1 and 3 and at zone 126 to get access to pitot probe 2.
   (3) Make sure that the access doors are open (Ref. AMM TASK 52-41-00-010-002):
     (a) FOR [9DA1] (PROBE-PITOT, 1), [9DA3] (PROBE-PITOT, 3)
812
     (b) FOR [9DA2] (PROBE-PITOT, 2)
822.
   (4) Make sure that the protective covers of the sensors and probes (AOA, static, Pitot and TAT) are removed.
Subtask 34-11-15-865-051-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUCOM NAV/RADAR/15SQ1K13
** ON A/C NOT FOR ALL
121VUCOM NAV/RADAR/25SQ2K14
** ON A/C ALL
FOR FIN: 9DA1 (PROBEPITOT, 1)
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
122VUANTI ICE/PROBES/1/TAT1DA1Z12
FOR FIN: 9DA2 (PROBEPITOT, 2)
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
FOR FIN: 9DA3 (PROBEPITOT, 3)
122VUANTI ICE/PROBES/3/PITOT3DA3Z16
122VUANTI ICE/PROBES/3/AOA4DA3Z15
122VUANTI ICE/PROBES/3/STATIC5DA3Z14
FOR FIN: 9DA1 (PROBEPITOT, 1)
49VUANTI ICE/PROBES/PHC/12DA1D03
FOR FIN: 9DA2 (PROBEPITOT, 2)
122VUANTI ICE/PROBES/PHC/22DA2Y12
FOR FIN: 9DA3 (PROBEPITOT, 3)
122VUANTI ICE/PROBES/PHC/32DA3Y16
4. Procedure
CAUTION: IF THERE WAS AN AIRSPEED OR ALTITUDE DISCREPANCY REPORT ON THE PREVIOUS FLIGHT, DO A RESET OF THE TWO ELAC'S (OFF-ON OF THE ELAC 1 AND 2 PUSHBUTTON SWITCHES ON THE OVERHEAD PANEL) WITH THE THREE HYDRAULIC SYSTEMS DEPRESSURIZED.
Subtask 34-11-15-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Pitot Probe (9DA1, 9DA2, 9DA3)
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
   (4) Install the new AIPC 34-11-01-03-040 GASKET (4) correctly.
NOTE: There are two types of gasket:
  • The gasket with one side identified as the PITOT SIDE.
  • The gasket without the PITOT SIDE identification that you can install from the two sides.
NOTE: A second person is necessary to hold the pitot probe on the outside of the aircraft.
     (a) If you use the removed gasket again, make sure that:
  • The gasket has no damage and it is in the correct condition.
  • The service life of the gasket is not expired (a maximum of eight flight cycles).
   (5) Install the pitot probe (5) on the sensor element (6).
     (a) Make sure that the sensor element (6) points in the forward direction of the aircraft.
   (6) TORQUE the nuts (3) to between 0.90 and 0.73 m.daN (79.65 and 64.60 lbf.in ) T from the inside of the fuselage.
     (a) Make sure that the clearance between the gasket (4) and the aircraft skin is not more than 0.2 mm (0.01 in.).
NOTE: A small space between the gasket (4) and the aircraft skin is permitted.
   (7) Remove the CAP - BLANKING from the electrical connector (2).
   (8) Make sure that all the electrical connections are clean and in the correct condition.
   (9) Remove the PLUG - BLANKING from the quick-disconnect coupling (1).
   (10) Connect the quick-disconnect coupling (1) to the pitot probe (5).
F Illustration of the Quick-Disconnect coupling ** ON A/C NOT FOR ALL
   (11) Make sure that you can see the blue ring on the quick-disconnect coupling (1).
   (12) Pull the quick-disconnect coupling (1) to make sure that it is correctly attached.
   (13) Make sure that the quick-disconnect coupling (1) is correctly engaged (the pin on the quick-disconnect male part is fully engaged into the groove in the quick-disconnect female part).
F Check of the Quick-Disconnect Coupling ** ON A/C NOT FOR ALL
WARNING: IF YOU REPLACE PITOT PROBE 3 (9DA3), OR IF YOU REPLACE MORE THAN ONE PITOT PROBE, MAKE SURE THAT A SECOND QUALIFIED MECHANIC DOES A VISUAL INSPECTION OF THE QUICK-DISCONNECT COUPLING CONNECTION. THE TWO MECHANICS MUST SIGN OFF THE JOB.
   (14) Refer to the table that follows to know if you must do the two checks of the quick-disconnect coupling (1) and/or the leak test:
Condition
Two Checks of the Quick-Disconnect Coupling
Leak Test
Installation of one pitot probe on the ADR 1 or ADR 2 circuit
No
No
Installation of one pitot probe on the ADR 3 circuit
Yes
No
Installation of two or more pitot probes
Yes
No
     (a) If you must do the two checks of the quick-disconnect coupling (1):
  • Tell a second qualified mechanic to do a visual inspection of the quick-disconnect coupling (1) (the signatures of the two mechanics are mandatory).
  • Make sure that the quick-disconnect coupling (1) is correctly engaged (the pin on the quick-disconnect male part is fully engaged into the groove in the quick-disconnect female part).
    F Check of the Quick-Disconnect Coupling ** ON A/C NOT FOR ALL
   (15) Connect the electrical connector (2) to the pitot probe (5) from the inside of the aircraft.
   (16) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
   (17) Do the inspection of the pitot probe (5) (Ref. AMM TASK 34-11-15-200-001).
Subtask 34-11-15-420-050-C ** ON A/C NOT FOR ALL
A. Installation of the Pitot Probe (9DA1, 9DA2, 9DA3)
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
   (4) Install the new AIPC 34-11-81-03-020 GASKET (4) correctly.
NOTE: There are two types of gasket:
  • The gasket with one side identified as the PITOT SIDE.
  • The gasket without the PITOT SIDE identification that you can install from the two sides.
NOTE: A second person is necessary to hold the pitot probe on the outside of the aircraft.
     (a) If you use the removed gasket again, make sure that:
  • The gasket has no damage and it is in the correct condition.
  • The service life of the gasket is not expired (a maximum of eight flight cycles).
   (5) Install the pitot probe (5) on the sensor element (6).
     (a) Make sure that the sensor element (6) points in the forward direction of the aircraft.
   (6) TORQUE the nuts (3) to between 0.90 and 0.73 m.daN (79.65 and 64.60 lbf.in ) T from the inside of the fuselage.
     (a) Make sure that the clearance between the gasket (4) and the aircraft skin is not more than 0.2 mm (0.01 in.).
NOTE: A small space between the gasket (4) and the aircraft skin is permitted.
   (7) Remove the CAP - BLANKING from the electrical connector (2).
   (8) Make sure that all the electrical connections are clean and in the correct condition.
   (9) Remove the PLUG - BLANKING from the quick-disconnect coupling (1).
   (10) Connect the quick-disconnect coupling (1) to the pitot probe (5).
F Illustration of the Quick-Disconnect coupling ** ON A/C NOT FOR ALL
   (11) Make sure that you can see the blue ring on the quick-disconnect coupling (1).
   (12) Pull the quick-disconnect coupling (1) to make sure that it is correctly attached.
   (13) Make sure that the quick-disconnect coupling (1) is correctly engaged (the pin on the quick-disconnect male part is fully engaged into the groove in the quick-disconnect female part).
F Check of the Quick-Disconnect Coupling ** ON A/C NOT FOR ALL
WARNING: IF YOU REPLACE PITOT PROBE 3 (9DA3), OR IF YOU REPLACE MORE THAN ONE PITOT PROBE, MAKE SURE THAT A SECOND QUALIFIED MECHANIC DOES A VISUAL INSPECTION OF THE QUICK-DISCONNECT COUPLING CONNECTION. THE TWO MECHANICS MUST SIGN OFF THE JOB.
   (14) Refer to the table that follows to know if you must do the two checks of the quick-disconnect coupling (1) and/or the leak test:
Condition
Two Checks of the Quick-Disconnect Coupling
Leak Test
Installation of one pitot probe on the ADR 1 or ADR 2 circuit
No
No
Installation of one pitot probe on the ADR 3 circuit
Yes
No
Installation of two or more pitot probes
Yes
No
     (a) If you must do the two checks of the quick-disconnect coupling (1):
  • Tell a second qualified mechanic to do a visual inspection of the quick-disconnect coupling (1) (the signatures of the two mechanics are mandatory).
  • Make sure that the quick-disconnect coupling (1) is correctly engaged (the pin on the quick-disconnect male part is fully engaged into the groove in the quick-disconnect female part).
    F Check of the Quick-Disconnect Coupling ** ON A/C NOT FOR ALL
   (15) Connect the electrical connector (2) to the pitot probe (5) from the inside of the aircraft.
   (16) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
   (17) Do the inspection of the pitot probe (5) (Ref. AMM TASK 34-11-15-200-001).
Subtask 34-11-15-865-062-A
B. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
Subtask 34-11-15-942-050-A
C. Safety Precautions
   (1) In the cockpit, on overhead control and indicating panel 25VU:
     (a) Make sure that the PROBE/WINDOW HEAT pushbutton switch is released (the ON legend is off).
     (b) Make sure that this(these) circuit breaker(s) is(are) closed:
  • 2KS1
  • 2KS2.
Subtask 34-11-15-865-052-A
D. Remove the safety clips and tags and close these circuit breakers in this sequence:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUCOM NAV/RADAR/15SQ1K13
** ON A/C NOT FOR ALL
121VUCOM NAV/RADAR/25SQ2K14
** ON A/C ALL
FOR FIN: 9DA1 (PROBEPITOT, 1)
49VUANTI ICE/PROBES/PHC/12DA1D03
FOR FIN: 9DA2 (PROBEPITOT, 2)
122VUANTI ICE/PROBES/PHC/22DA2Y12
FOR FIN: 9DA3 (PROBEPITOT, 3)
122VUANTI ICE/PROBES/PHC/32DA3Y16
FOR FIN: 9DA1 (PROBEPITOT, 1)
122VUANTI ICE/PROBES/1/TAT1DA1Z12
49VUANTI ICE/PROBES/PITOT/13DA1D02
49VUANTI ICE/PROBES/AOA/14DA1D04
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
FOR FIN: 9DA2 (PROBEPITOT, 2)
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
FOR FIN: 9DA3 (PROBEPITOT, 3)
122VUANTI ICE/PROBES/3/PITOT3DA3Z16
122VUANTI ICE/PROBES/3/AOA4DA3Z15
122VUANTI ICE/PROBES/3/STATIC5DA3Z14
Subtask 34-11-15-710-050-A
E. Do the tests that follow:
   (1) Do the operational test of the probe ice protection.
(Ref. AMM TASK 30-31-00-710-001).
NOTE: As an alternative procedure, you can do this operational test without the CFDS
(Ref. AMM TASK 34-11-15-710-001).
5. Close-up
Subtask 34-11-15-410-050-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Make sure that the drain holes on the pitot probes are not blocked by unwanted materials. (Ref. AMM TASK 34-11-15-200-001)
   (3) Close the access doors (Ref. AMM TASK 52-41-00-410-002):
     (a) FOR [9DA1] (PROBE-PITOT, 1), [9DA3] (PROBE-PITOT, 3)
812
     (b) FOR [9DA2] (PROBE-PITOT, 2)
822.
   (4) Install the protective covers on the sensors and probes (AOA, static, Pitot and TAT).
   (5) Remove the access platform(s).
[Rev.10 from 2021] 2026.04.01 04:01:19 UTC
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