Which block in AFI Form 487 covers Maintenance Actions?

The correct answer is Block 12 in AFI Form 487, which is designated specifically for documenting Maintenance Actions. This section is crucial for maintaining a clear record of any maintenance performed on electrical power production equipment, ensuring compliance with regulations and providing accountability for actions taken. Properly documenting maintenance actions helps in tracking the performance and operational readiness of the systems. This block includes details such as the type of maintenance conducted, dates of service, and any pertinent notes, which are essential for ongoing evaluations and future repairs or inspections.

The other options do not pertain to Maintenance Actions. Blocks 9, 10, and 11 cover different aspects, such as equipment inspections or operational readiness, but they fail to focus on documenting maintenance specifically. Understanding the purpose of each block on the form is key to accurately completing documentation related to electrical power production.