What information is typically recorded in an aircraft maintenance log?

The aircraft maintenance log is a critical document that provides a comprehensive record of all maintenance performed on an aircraft as well as any inspections that have taken place. This includes routine maintenance tasks, repairs, modifications, and any scheduled inspections required under aviation regulations. Keeping a detailed log of this information is essential for ensuring the airworthiness of the aircraft and for compliance with regulatory requirements mandated by aviation authorities.

Proper documentation serves not only as a history of the aircraft's maintenance but also plays a vital role in maintaining its value and ensuring safety. Any discrepancies noticed during inspections or maintenance are recorded, providing vital data that can help in troubleshooting any future issues.

In contrast, the other choices reflect information that is not typically found in a maintenance log. Altitude changes and pilot transgressions pertain more to flight operations and pilot logs rather than maintenance records. Fuel consumption rates and landing gear performance might be relevant for operational analysis but would not be directly listed in maintenance logs. Lastly, material changes and UFO sightings are not pertinent to the technical background of maintenance or inspections.