What does the cross-line amber indicator on ECAM signify in cargo smoke conditions?

What does the cross-line amber indicator on ECAM signify in cargo smoke conditions?

• A. Cross-Line Amber
• B. Green Indicator
• C. Red Warning
• D. Blue Dash

Answer: (A)

The cross-line amber indicator shows a fault or degraded condition in the cargo smoke detection cross-line circuit. Airbus cargo smoke sensing uses two detector lines linked by a cross-line path so a fault in one line doesn’t hide a real fire. When this amber indicator is lit, it means the cross-line connection or one of the detector circuits isn’t healthy, not necessarily that there is active smoke. In this situation you follow the ECAM cargo smoke procedure, verify the status shown, isolate the affected hold(s) if indicated, and monitor for any actual smoke indication while continuing to operate normally. The other indicators (green for normal operation, red for a direct fire/warning, blue dash for nonstandard cases) are not applicable here, making the amber cross-line the correct cue.

The cross-line amber indicator shows a fault or degraded condition in the cargo smoke detection cross-line circuit. Airbus cargo smoke sensing uses two detector lines linked by a cross-line path so a fault in one line doesn’t hide a real fire. When this amber indicator is lit, it means the cross-line connection or one of the detector circuits isn’t healthy, not necessarily that there is active smoke. In this situation you follow the ECAM cargo smoke procedure, verify the status shown, isolate the affected hold(s) if indicated, and monitor for any actual smoke indication while continuing to operate normally. The other indicators (green for normal operation, red for a direct fire/warning, blue dash for nonstandard cases) are not applicable here, making the amber cross-line the correct cue.