W DOC AIRBUS | AMM A320F

Installation of the TAT Sensor

TASK 34-11-18-400-001-A
Installation of the TAT Sensor

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: MAKE SURE THAT:
  • THERE IS NO SIGN OF CORROSION OR DAMAGE ON THE EQUIPMENT
  • THERE IS NO FOREIGN OBJECT IN THE EQUIPMENT
TO PREVENT ANY DAMAGE IN THE SYSTEM.
ZONE: 121
ZONE: 122
FIN: 11FP1
FIN: 11FP2
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)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
121
AVIONICS COMPARTMENT
122
AVIONICS COMPARTMENT
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
3
SEAL
AIPC 34-11-01-01-040
3
SEAL
AIPC 34-11-81-01-020
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-720-005-A
Check of the Electrical Bonding of the Different Components (but not the Fluid Systems and Components Installed on Composite materials)
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 30-31-00-710-001-A
Operational Test of the Probe Ice Protection
TASK 34-11-18-710-001-A
Test of the TAT Sensor without the CFDS
TASK 49-00-00-860-008-A
APU Start by External Power
TASK 49-00-00-860-008-A-01
APU Start by Batteries
TASK 49-00-00-860-009-A
APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01
APU Shutdown by Batteries (131-9(A))
F Total Air Temperature (TAT) Sensor ** ON A/C NOT FOR ALL
F Total Air Temperature (TAT) Sensor ** ON A/C NOT FOR ALL
F Total Air Temperature (TAT) Sensor ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 34-11-18-860-054-A
A. Aircraft Maintenance Configuration
   (1) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position at zone 120.
   (2) Make sure that the protective covers of the sensors and probes (AOA, static Pitot and TAT) are removed.
Subtask 34-11-18-865-051-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: 11FP1 (SENSORTAT, 1)
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
49VUNAV PROBES/ADIRU1/115VAC4FP1F06
121VUADIRS/ADIRU/3/115VAC4FP3N05
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
122VUANTI ICE/PROBES/1/TAT1DA1Z12
FOR FIN: 11FP2 (SENSORTAT, 2)
121VUADIRS/ADIRU/2/115VAC4FP2N06
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
FOR FIN: 11FP1 (SENSORTAT, 1)
49VUANTI ICE/PROBES/PHC/12DA1D03
FOR FIN: 11FP2 (SENSORTAT, 2)
122VUANTI ICE/PROBES/PHC/22DA2Y12
4. Procedure
Subtask 34-11-18-420-051-A ** ON A/C NOT FOR ALL
A. Installation of the Total Air Temperature (TAT) Sensor (11FP1, 11FP2)
CAUTION: BE VERY CAREFUL WITH THE TAT SENSORS WHEN YOU REMOVE/INSTALL THEM:
  • DO NOT LET THEM FALL
  • DO NOT BEND THEM
  • DO NOT CAUSE THEM SCRATCHES.
TAT SENSORS CONTAIN SENSITIVE ELECTRONIC EQUIPMENT WHICH CAN EASILY BE DAMAGED.
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Install the new AIPC 34-11-01-01-040 SEAL (3) on the sensor (5).
NOTE: If the seal (3) is in a good condition (no signs of cracks or missing parts), keep this seal for a maximum of eight flight cycles.
   (4) Remove the blanking caps from the connectors (1) and (4).
   (5) Make sure that all the electrical connections are clean and in the correct condition.
   (6) Connect the connector (1) to the sensor (5) out of the housing (2).
   (7) Install the sensor (5) in its housing (2) and hold it.
     (a) Make sure that the seal (3) is in the correct position.
   (8) Tighten the six screws (6).
   (9) Do a check of the resistance of the bonding contact between the TAT sensor (5) and the fuselage structure (2) (Ref. AMM TASK 20-28-00-720-005).
Subtask 34-11-18-420-051-B ** ON A/C NOT FOR ALL
A. Installation of the Total Air Temperature (TAT) Sensor (11FP1, 11FP2)
CAUTION: BE VERY CAREFUL WITH THE TAT SENSORS WHEN YOU REMOVE/INSTALL THEM:
  • DO NOT LET THEM FALL
  • DO NOT BEND THEM
  • DO NOT CAUSE THEM SCRATCHES.
TAT SENSORS CONTAIN SENSITIVE ELECTRONIC EQUIPMENT WHICH CAN EASILY BE DAMAGED.
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Install a new AIPC 34-11-01-01-040 SEAL (3) or the AIPC 34-11-81-01-020 SEAL (3) on the sensor (5).
NOTE: If the seal (3) is in a good condition (no signs of cracks or missing parts), keep this seal for a maximum of eight flight cycles.
   (4) Remove the blanking caps from the connectors (1) and (4).
   (5) Make sure that all the electrical connections are clean and in the correct condition.
   (6) Connect the connector (1) to the sensor (5) out of the housing (2).
   (7) Install the sensor (5) in its housing (2) and hold it.
     (a) Make sure that the seal (3) is in the correct position.
   (8) Tighten the six screws (6).
   (9) Remove the blanking plugs from the ends of the disconnected pressure line (8) and the sensor tube (7).
   (10) Connect the pressure line (8) to the sensor tube (7).
   (11) Do a check of the resistance of the bonding contact between the TAT sensor (5) and the fuselage structure (2) (Ref. AMM TASK 20-28-00-720-005).
Subtask 34-11-18-860-053-A
B. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 34-11-18-865-057-A
C. 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 34-11-18-942-050-A
D. 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 34-11-18-865-052-A
E. 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: 11FP1 (SENSORTAT, 1)
49VUANTI ICE/PROBES/PHC/12DA1D03
FOR FIN: 11FP2 (SENSORTAT, 2)
122VUANTI ICE/PROBES/PHC/22DA2Y12
FOR FIN: 11FP1 (SENSORTAT, 1)
49VUNAV PROBES/ADIRU1/115VAC4FP1F06
121VUADIRS/ADIRU/3/115VAC4FP3N05
122VUANTI ICE/PROBES/1/TAT1DA1Z12
49VUANTI ICE/PROBES/PITOT/13DA1D02
49VUANTI ICE/PROBES/AOA/14DA1D04
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
FOR FIN: 11FP2 (SENSORTAT, 2)
121VUADIRS/ADIRU/2/115VAC4FP2N06
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
Subtask 34-11-18-710-050-B
F. Do the operational test of the TAT sensor with the CFDS.
   (1) Do the operational test of the Probe Ice Protection.
(Ref. AMM TASK 30-31-00-710-001)
   (2) Do the operational test of the INPUT STATUS:

NOTE: The TAT sensor 1 is related to the ADIRU 1 and 3. The TAT sensor 2 is related to the ADIRU 2.

ACTION
RESULT
1.On the center pedestal, on one MCDU:
On the MCDU:
  • push the MCDU MENU mode key.
  • the MCDU MENU page comes into view.
  • push the line key adjacent to the CFDS indication.
  • the CFDS MENU page comes into view.
  • push the line key adjacent to the SYSTEM REPORT/TEST indication.
  • the SYSTEM REPORT/TEST page comes into view.
  • push the line key adjacent to the NAV indication.
  • the SYSTEM REPORT/TEST NAV page comes into view.
  • push the line key adjacent to the ADR1 (ADR2) (ADR3) indication (related to the removed TAT sensor).
  • the ADR1 (ADR2) (ADR3) page comes into view.
  • push the line key adjacent to the INPUT STATUS indication.
  • the INPUT STATUS page comes into view.
  • push NEXT PAGE key until you get ADR1 (ADR2) (ADR3)/INPUT STATUS pages 3/8 and 7/8.
  • INPUT STATUS pages 3/8 and 7/8 come into view:
    do a check of the TAT data (OPEN, XXX ° C).
NOTE: As an alternative procedure, you can do this operational test without the CFDS
(Ref. AMM TASK 34-11-18-710-001).
Subtask 34-11-18-200-051-A ** ON A/C NOT FOR ALL
G. Do a check of the TAT sensors 1 and 2 to make sure that the suction operates correctly
   (1) Do the APU start procedure (Ref. AMM TASK 49-00-00-860-003) or (Ref. AMM TASK 49-00-00-860-008).
   (2) On the AIR COND section of the panel 30VU, push the PACK1 and PACK2 pushbutton switches (OFF legends off).
   (3) At the TAT sensors 1 and 2, listen for the suction noise.
   (4) On the AIR COND section of the panel 30VU, release the PACK1 and PACK2 pushbutton switches (OFF legends on).
   (5) Do the APU shutdown procedure (Ref. AMM TASK 49-00-00-860-004) or (Ref. AMM TASK 49-00-00-860-009).
5. Close-up
Subtask 34-11-18-860-055-A
A. Put the aircraft back to its initial configuration.
   (1) On the MCDU , push the MCDU MENU mode key.
   (2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (3) Make sure that the work area is clean and clear of tools and other items.
   (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 04:01:25 UTC
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