If a system indication suggests operating outside its limits, which action is correct?

If a system indication suggests operating outside its limits, which action is correct?

• A. Isolate the affected system and continue.
• B. Reduce speed to idle and continue.
• C. Notify ATC only if altitude changes.
• D. Do not operate beyond the published envelope; follow AFM/maintenance guidance.

Answer: (D)

When a system indication suggests operating outside its limits, you don’t continue operating the system. The correct action is to stop and follow the published envelope and the abnormal procedures in the AFM/maintenance guidance. The published limits define what is safe to operate, and the AFM/maintenance guidance tells you exactly what to do when an indication points outside those limits—this can include isolating the affected system, performing ECAM/MEL procedures, using an alternate system if available, and potentially diverting or returning for maintenance. The other options try to continue or address only part of the situation, which does not ensure safety and may lead to further issues.

When a system indication suggests operating outside its limits, you don’t continue operating the system. The correct action is to stop and follow the published envelope and the abnormal procedures in the AFM/maintenance guidance. The published limits define what is safe to operate, and the AFM/maintenance guidance tells you exactly what to do when an indication points outside those limits—this can include isolating the affected system, performing ECAM/MEL procedures, using an alternate system if available, and potentially diverting or returning for maintenance. The other options try to continue or address only part of the situation, which does not ensure safety and may lead to further issues.