W DOC AIRBUS | TSM A320F

Lavatory Smoke Warning(s) without Fire

TASK 26-17-00-810-804-A
Lavatory Smoke Warning(s) without Fire

1. Possible Causes
  • Oil leak of the APU
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 49-00-00-810-921-A
Fumes in the Cabin/Oil Smoke at the APU Exhaust (APS 3200)
TSM TASK 49-00-81-810-874-A
Fumes in the Cabin/Oil Smoke at the APU Exhaust (131-9(A))
AMM 12-33-21-618-001
Pre-conditioning through the LP Ground Connection
AMM 26-17-15-000-001
Removal of the Lavatory Smoke Detector
AMM 26-17-15-000-008
Removal of the Lavatory Smoke Detector
AMM 26-17-15-000-802
Removal of the Smoke Detector of Lavatory A
AMM 26-17-15-000-808
Removal of the Smoke Detector of Lavatory DS/ES/HS
AMM 26-17-15-000-809
Removal of the Smoke Detector of Lavatory WC/FS/GS
AMM 26-17-15-100-003
Remove the Smoke Detector for Cleaning
AMM 26-17-15-400-001
Installation of the Lavatory Smoke Detector
AMM 26-17-15-400-007
Installation of the Lavatory Smoke Detector
AMM 26-17-15-400-802
Installation of the Smoke Detector of Lavatory A
AMM 26-17-15-400-808
Installation of the Smoke Detector of Lavatory DS/ES/HS
AMM 26-17-15-400-809
Installation of the Smoke Detector of Lavatory WC/FS/GS
3. Fault Confirmation
Subtask 26-17-00-710-056-A ** ON A/C NOT FOR ALL
A. Test:
   (1) Make sure that:
  • There was no real smoke condition in the cabin area/lavatories.
  • There was no other cause such as cigarettes, hair or deodorant spray.
  • There was no smoke source external to the aircraft, which could cause the smoke warning.
  • The lavatory smoke detector is clean and not covered by dust. Do the visual inspection of the smoke detector and if the smoke detector is contaminated, do a cleaning of the lavatory smoke detector AMM 26-17-15-100-003.
  • The APU (Auxiliary Power Unit) operated during the smoke warning.
   (2) Do the pre-conditioning with the APU AMM 12-33-21-618-001.
Subtask 26-17-00-710-056-B ** ON A/C NOT FOR ALL
A. Test:
   (1) Make sure that:
  • There was no real smoke condition in the cabin area/lavatories.
  • There was no other cause such as cigarettes, hair or deodorant spray.
  • There was no smoke source external to the aircraft, which could cause the smoke warning.
  • The APU (Auxiliary Power Unit) operated during the smoke warning.
   (2) Check the SDF smoke warnings report:
ACTION
RESULT
1.On the MCDU:
  • Push the line key adjacent to the SMOKE indication.
On the MCDU:
  • The CIDS-SDF main menu comes into view.
2.On the MCDU:
  • Push the line key adjacent to the SPECIFIC DATA indication.
On the MCDU:
  • The SPECIFIC DATA menu comes into view.
3.On the MCDU:
  • Push the line key adjacent to the SMOKE WARNINGS REPORT indication.
On the MCDU:
  • The SMOKE WARNINGS REPORT comes into view.
     (a) Check the report for the lavatory smoke detector, which caused the smoke alarm.
     (b) Check the class 3 fault report:
ACTION
RESULT
1.On the MCDU:
  • Push the line key adjacent to the SMOKE indication.
On the MCDU:
  • The CIDS-SDF main menu comes into view.
2.On the MCDU:
  • Push the line key adjacent to the CLASS 3 FAULT indication.
On the MCDU:
  • The The CLASS 3 FAULTS page comes on.
3.On the MCDU:
  • Push the line key adjacent to the PRINT indication.
On the MCDU:
  • The printer prints the class 3 faults.
4.At the printer:
  • Remove the printed report.
     (c) Do the visual inspection of the lavatory smoke detector to check if the smoke detector is clean and not covered by dust. If the smoke detector is contaminated do a cleaning of the lavatory smoke detector AMM 26-17-15-100-003.
NOTE: A contaminated smoke detector can be a cause of spurious false alarm.
   (3) Do the pre-conditioning with the APU AMM 12-33-21-618-001.
Subtask 26-17-00-710-112-E ** ON A/C NOT FOR ALL
B. Test:
   (1) Make sure that:
  • There was no real smoke condition in the cabin area/lavatories.
  • There was no other cause such as cigarettes, hair or deodorant spray.
  • There was no smoke source external to the aircraft, which could cause the smoke warning.
  • The APU (Auxiliary Power Unit) operated during the smoke warning.
   (2) Check the SDF smoke warnings report:
ACTION
RESULT
1.On the MCDU:
  • Push the line key adjacent to the SMOKE indication.
On the MCDU:
  • The CIDS-SDF main menu comes into view.
2.On the MCDU:
  • Push the line key adjacent to the SPECIFIC DATA indication.
On the MCDU:
  • The SPECIFIC DATA menu comes into view.
3.On the MCDU:
  • Push the line key adjacent to the SMOKE WARNINGS REPORT indication.
On the MCDU:
  • The SMOKE WARNINGS REPORT comes into view.
     (a) Check the report for the lavatory smoke detector, which caused the smoke alarm.
     (b) Check the class 3 fault report:
ACTION
RESULT
1.On the MCDU:
  • Push the line key adjacent to the SMOKE indication.
On the MCDU:
  • The CIDS-SDF main menu comes into view.
2.On the MCDU:
  • Push the line key adjacent to the CLASS 3 FAULT indication.
On the MCDU:
  • The The CLASS 3 FAULTS page comes on.
3.On the MCDU:
  • Push the line key adjacent to the PRINT indication.
On the MCDU:
  • The printer prints the class 3 faults.
4.At the printer:
  • Remove the printed report.
     (c) Do the visual inspection of the lavatory smoke detector to check if the smoke detector is clean and not covered by dust. If the smoke detector is contaminated do a cleaning of the lavatory smoke detector AMM 26-17-15-100-003.
NOTE: A contaminated smoke detector can be a cause of spurious false alarm.
   (3) Do the pre-conditioning with the APU AMM 12-33-21-618-001.
Subtask 26-17-00-710-112-F ** ON A/C NOT FOR ALL
B. Test:
   (1) Make sure that:
  • There was no real smoke condition in the cabin area/lavatories.
  • There was no other cause such as cigarettes, hair or deodorant spray.
  • There was no smoke source external to the aircraft, which could cause the smoke warning.
  • The APU (Auxiliary Power Unit) operated during the smoke warning.
   (2) Check the SDF smoke warnings report:
ACTION
RESULT
1.On the MCDU:
  • Push the line key adjacent to the SMOKE indication.
On the MCDU:
  • The CIDS-SDF main menu comes into view.
2.On the MCDU:
  • Push the line key adjacent to the SPECIFIC DATA indication.
On the MCDU:
  • The SPECIFIC DATA menu comes into view.
3.On the MCDU:
  • Push the line key adjacent to the SMOKE WARNINGS REPORT indication.
On the MCDU:
  • The SMOKE WARNINGS REPORT comes into view.
     (a) Check the report for the lavatory smoke detector, which caused the smoke alarm.
     (b) Check the class 3 fault report:
ACTION
RESULT
1.On the MCDU:
  • Push the line key adjacent to the SMOKE indication.
On the MCDU:
  • The CIDS-SDF main menu comes into view.
2.On the MCDU:
  • Push the line key adjacent to the CLASS 3 FAULT indication.
On the MCDU:
  • The The CLASS 3 FAULTS page comes on.
3.On the MCDU:
  • Push the line key adjacent to the PRINT indication.
On the MCDU:
  • The printer prints the class 3 faults.
4.At the printer:
  • Remove the printed report.
     (c) Do the visual inspection of the lavatory smoke detector to check if the smoke detector is clean and not covered by dust. If the smoke detector is contaminated do a cleaning of the lavatory smoke detector AMM 26-17-15-100-003.
NOTE: A contaminated smoke detector can be a cause of spurious false alarm.
   (3) Do the pre-conditioning with the APU AMM 12-33-21-618-001.
4. Fault Isolation
Subtask 26-17-00-810-060-A
A. If you smell fumes in the cabin during the pre-conditioning with the APU:
   (1) Do the trouble shooting procedure for the fumes in the cabin/oil smoke at the APU exhaust:
NOTE: An Oil leak of the APU causes this fault.
5. Close-up
Subtask 26-17-00-860-053-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:27:20 UTC
"WTRUIB" 2025