What does Block 11 of the Aircraft Inspection Record signify?

Block 11 of the Aircraft Inspection Record is designated for the signature of the pilot in command. This signature serves as an acknowledgment that the pilot has reviewed the inspection results and ensures the airworthiness of the aircraft before it is deemed fit for flight. The pilot's signature indicates responsibility and accountability for the aircraft’s condition and readiness for operation, confirming that all necessary inspections have been completed satisfactorily.

The other options relate to different aspects of aircraft maintenance and operation but do not specifically pertain to Block 11. The maintenance officer's signature or activities like aircraft status reviews and regulatory compliance verification are recorded in other portions of the inspection record or in different documents. Thus, the emphasis on the pilot in command's signature in Block 11 highlights the importance of pilot responsibility in ensuring aircraft safety.