If a data block shows a MISM mismatch, which is the recommended immediate response?

If a data block shows a MISM mismatch, which is the recommended immediate response?

• A. Supervisory personnel
• B. The Pilot
• C. The Controller
• D. System engineer

Answer: (A)

A MISM mismatch signals a data integrity fault in the data block that can affect how information is displayed or processed. The immediate action is to notify supervisory personnel. They are the appropriate point of contact to coordinate anomaly handling, safety assessment, and any required technical steps, such as engaging maintenance or engineering, switching to backup data sources, or initiating fault isolation. This ensures the situation is managed with proper authority and coordination, rather than attempting to troubleshoot at the operator level. The pilot and controller are focused on flight operations, while the system engineer handles technical remedies once supervisory directs the response.

A MISM mismatch signals a data integrity fault in the data block that can affect how information is displayed or processed. The immediate action is to notify supervisory personnel. They are the appropriate point of contact to coordinate anomaly handling, safety assessment, and any required technical steps, such as engaging maintenance or engineering, switching to backup data sources, or initiating fault isolation. This ensures the situation is managed with proper authority and coordination, rather than attempting to troubleshoot at the operator level. The pilot and controller are focused on flight operations, while the system engineer handles technical remedies once supervisory directs the response.