Which block of the Preflight/Daily/Turnaround/Postflight Maintenance Record requires a Signature and Rate?

The correct answer is Block 11 because this block is specifically designated for the signature of the individual who performed the maintenance, along with their rate or rank. This requirement serves to ensure accountability and traceability for the maintenance conducted on the aircraft or equipment. By including both the signature and the rate, it allows for verification of the qualifications of the personnel who performed the maintenance tasks.

The necessity of having documented verification in Block 11 emphasizes the importance of maintaining high standards and safety protocols within the Navy's maintenance practices. In addition to ensuring that qualified personnel are performing maintenance work, it also provides a point of reference for any future audits or investigations regarding the maintenance history of an aircraft or equipment.