DOC AIRBUS | TSM A320FLavatory Smoke-Detector Inoperative
TASK 26-17-00-810-815-A
Lavatory Smoke-Detector Inoperative
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 26-17-00-710-076-B ** ON A/C NOT FOR ALL
Subtask 26-17-00-810-102-A ** ON A/C NOT FOR ALL
Subtask 26-17-00-860-061-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:27:21 UTC
Lavatory Smoke-Detector Inoperative
1. Possible Causes
- lavatory smoke detector
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 23-73-00-861-001 | Energize the Cabin Intercommunication Data System (CIDS) |
| AMM 23-73-00-862-001 | De-energize the Cabin Intercommunication Data System (CIDS) |
| AMM 26-17-00-710-001 | Operational Test of the Lavatory Smoke-Detection System |
| 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 26-17-15-400-001 | 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 |
Subtask 26-17-00-710-076-B ** ON A/C NOT FOR ALL
A. Test
(1) If all lavatory smoke detectors do not operate:
4. Fault Isolation(1) If all lavatory smoke detectors do not operate:
- Do the reset of the CIDS AMM 23-73-00-862-001 and AMM 23-73-00-861-001.
- Do the operational test of the lavatory smoke-detection system AMM 26-17-00-710-001.
Subtask 26-17-00-810-102-A ** ON A/C NOT FOR ALL
A. If the test gives a different maintenance message:
Subtask 26-17-00-810-108-A ** ON A/C NOT FOR ALL - Do the trouble shooting procedure related to the maintenance message.
B. If the test gives the maintenance message TEST OK, no other maintenance action is necessary.
Subtask 26-17-00-810-109-A ** ON A/C NOT FOR ALL C. If the test gives the maintenance message SMK DET LAV X (X = location of the related lavatory):
Subtask 26-17-00-810-160-E ** ON A/C NOT FOR ALL - Replace the related lavatory smoke detector
AMM 26-17-15-000-001, AMM 26-17-15-000-008 and AMM 26-17-15-400-001, AMM 26-17-15-400-007.
D. If the test gives the maintenance message SMK DET LAV X (X = location of the related lavatory):
Subtask 26-17-00-810-160-F ** ON A/C NOT FOR ALL - Replace the related lavatory smoke detector
AMM 26-17-15-000-802 and AMM 26-17-15-400-802 or AMM 26-17-15-000-808 and AMM 26-17-15-400-808.
D. If the test gives the maintenance message SMK DET LAV X (X = location of the related lavatory):
Subtask 26-17-00-710-082-A ** ON A/C NOT FOR ALL - Replace the related lavatory smoke detector
AMM 26-17-15-000-802 and AMM 26-17-15-400-802 or AMM 26-17-15-000-808 and AMM 26-17-15-400-808 or AMM 26-17-15-000-809 and AMM 26-17-15-400-809.
E. Do the test as given in the Para. 3.
5. Close-upSubtask 26-17-00-860-061-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.