DOC AIRBUS | TSM A320FUnderpressure Fault (class 3)
TASK 21-58-00-810-826-A
Underpressure Fault (class 3)
1. Possible Causes
2. Fault Confirmation
Subtask 21-58-00-710-097-A ** ON A/C NOT FOR ALL
Subtask 21-58-00-810-100-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:24:51 UTC
Underpressure Fault (class 3)
1. Possible Causes
2. Fault Confirmation
Subtask 21-58-00-710-097-A ** ON A/C NOT FOR ALL
A. Do a read out of the POST FLIGHT REPORT.
3. Fault IsolationSubtask 21-58-00-810-100-A ** ON A/C NOT FOR ALL
A. If the post flight report gives the class 3 maintenance message UNDERPRESS:
- no further maintenance action is necessary.