W DOC AIRBUS | AMM A320F

Removal of the TAT Sensor

TASK 34-11-18-000-001-A
Removal 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.
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)
No specific
AR
CAP - BLANKING
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
121
AVIONICS COMPARTMENT
122
AVIONICS COMPARTMENT
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 10-11-00-555-014-A
Removal of the Aircraft Protection Equipment
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 34-11-18-860-058-A
A. Aircraft Maintenance Configuration
   (1) Remove the protective covers from the sensors and the probes (AOA, static, Pitot and TAT). (Ref. AMM TASK 10-11-00-555-014)
Subtask 34-11-18-865-056-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 34-11-18-941-050-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 34-11-18-865-050-A
D. Open, safety and tag 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)
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
FOR FIN: 11FP1 (SENSORTAT, 1)
49VUANTI ICE/PROBES/PHC/12DA1D03
FOR FIN: 11FP2 (SENSORTAT, 2)
122VUANTI ICE/PROBES/PHC/22DA2Y12
Subtask 34-11-18-860-052-A
E. Put the ACCESS PLATFORM 1M(3 FT) in position at zone 120.
4. Procedure
Subtask 34-11-18-020-051-A ** ON A/C NOT FOR ALL
A. Removal 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) Loosen the six screws (6).
   (2) Pull the sensor (5) out of its housing (2).
   (3) Hold the sensor (5) and disconnect the connector (1).
   (4) Put the CAP - BLANKING on the disconnected electrical connectors (1) and (4).
   (5) Remove the sensor (5).
   (6) Remove and discard the seal (3).
NOTE: If the seal (3) is in a good condition (no signs of cracks or missing parts):
  • Do not discard this seal.
  • Keep this seal for a maximum of eight flight cycles.
Subtask 34-11-18-020-051-B ** ON A/C NOT FOR ALL
A. Removal 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) Disconnect the pressure line (8) from the sensor tube (7).
   (2) Put the blanking plugs on the ends of the disconnected pressure line (8) and the sensor tube (7).
   (3) Loosen the six screws (6).
   (4) Pull the sensor (5) out of its housing (2).
   (5) Hold the sensor (5) and disconnect the connector (1).
   (6) Put the CAP - BLANKING on the disconnected electrical connectors (1) and (4).
   (7) Remove the sensor (5).
   (8) Remove and discard the seal (3).
NOTE: If the seal (3) is in a good condition (no signs of cracks or missing parts):
  • Do not discard this seal.
  • Keep this seal for a maximum of eight flight cycles.
[Rev.10 from 2021] 2026.04.01 04:01:24 UTC
"Aviabrain" 2025