W DOC AIRBUS | TSM A320F

Loss of the ADR1 Data Identified by the EFCS2

TASK 34-13-81-810-814-A
Loss of the ADR1 Data Identified by the EFCS2

1. Possible Causes
  • PROBE-PITOT, 1 [9DA1]
  • PROBE-PITOT, 2 [9DA2]
  • PROBE-PITOT, 3 [9DA3]
  • SENSOR-ANGLE OF ATTACK, 1 [3FP1]
  • SENSOR-ANGLE OF ATTACK, 2 [3FP2]
  • SENSOR-ANGLE OF ATTACK, 3 [3FP3]
  • ADM-L TOTAL PRESSURE [19FP1]
  • ADM-R TOTAL PRESSURE [19FP2]
  • ADM-STBY TOTAL PRESSURE [19FP3]
  • ADM-R STATIC PRESSURE [19FP4]
  • ADM-L STATIC PRESSURE [19FP5]
  • ADM-R STATIC PRESSURE [19FP6]
  • ADM-L STATIC PRESSURE [19FP7]
  • ADM-STBY STATIC PRESSURE [19FP8]
  • ADIRU-1 [1FP1]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 34-11-00-810-861-A
Different Angle of Attack Value on the three ADIRUs
TSM TASK 34-13-81-810-823-A
Runaway or Drift of One ADR1 Parameter Identified by the ELACs and the SECs
AMM 30-31-00-720-001
Functional Check of the Insulation Resistance of the Pitot Probe Heater
AMM 34-10-00-170-001
Flushing of the Principal Total Pressure Lines
AMM 34-10-00-170-003
Draining and Flushing of Standby Pneumatic Circuits
AMM 34-11-15-000-001
Removal of the Pitot Probe
AMM 34-11-15-200-001
Inspection/Check of the Pitot Probe
AMM 34-11-15-400-001
Installation of the Pitot Probe
AMM 34-11-17-000-001
Removal of the Air Data Module
AMM 34-11-17-400-001
Installation of the Air Data Module
AMM 34-11-19-000-001
Removal of the Angle of Attack Sensor
AMM 34-11-19-200-001
Inspection of the Angle-Of-Attack Sensor
AMM 34-11-19-400-001
Installation of the Angle of Attack Sensor
AMM 34-12-34-000-001
Removal of the ADIRU
AMM 34-12-34-400-001
Installation of the ADIRU
AMM 34-13-00-720-010
Functional Test of the ADM Accuracy
3. Fault Confirmation
Subtask 34-13-81-740-076-A
A. Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
Subtask 34-13-81-810-063-A ** ON A/C NOT FOR ALL
A. Read the Post Flight Report (PFR) for the maintenance messages related to the link between SEC and ADR.
   (1) If the PFR gives the maintenance message(s) SEC1 OR BUS3 FROM ADR3 and/or SEC2 OR BUS 2 FROM ADR2:
     (a) Do this trouble shooting procedure: (Ref. TSM TASK 34-13-81-810-823).
   (2) If the PFR does not give the above maintenance message(s):
     (a) Do the inspection/check of the pitot probes (9DA1, 9DA2 and 9DA3) AMM 34-11-15-200-001.
       1 If one pitot probe is damaged:
     (b) Do the inspection of the angle-of-attack sensors (3FP1, 3FP2 and 3FP3) AMM 34-11-19-200-001.
       1 If one angle-of-attack sensor is damaged:
     (c) Do this trouble shooting procedure (Ref. TSM TASK 34-11-00-810-861).
     (d) Do the functional test of the insulation resistance of the pitot probe heaters (9DA1, 9DA2 and 9DA3) AMM 30-31-00-720-001.
       1 If the test is not OK:
     (e) Do the flushing of the principal total pressure lines AMM 34-10-00-170-001.
     (f) Do the draining and flushing of the standby pneumatic circuits AMM 34-10-00-170-003.
       1 If the fault continues after the subsequent flight:
         a If the test is not OK:
         b If the test is OK:
         c If the fault continues after the subsequent flight:
Subtask 34-13-81-810-063-B ** ON A/C NOT FOR ALL
A. Read the Post Flight Report (PFR) for the maintenance messages related to the link between SEC and ADR.
   (1) If the PFR gives the maintenance message(s) SEC1 OR BUS3 FROM ADR3 and/or SEC2 OR BUS 2 FROM ADR2:
   (2) If the PFR does not give the above maintenance message(s):
     (a) Do the inspection/check of the pitot probes (9DA1, 9DA2 and 9DA3) AMM 34-11-15-200-001.
       1 If one pitot probe is damaged:
     (b) Do the functional test of the insulation resistance of the pitot probe heaters (9DA1, 9DA2 and 9DA3) AMM 30-31-00-720-001.
       1 If the test is not OK:
     (c) Do the flushing of the principal total pressure lines AMM 34-10-00-170-001.
       1 If the fault continues after the subsequent flight:
         a If the test is not OK:
         b If the test is OK:
[Rev.8 from Aug 2018] 2026.04.04 04:32:34 UTC
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