What must an approving person enter in the maintenance record after approving for return to service?

The correct choice emphasizes the importance of documentation following maintenance work. When an approving person certifies that an aircraft is safe and compliant for return to service, it is crucial to detail the work that has been completed. This involves recording a description of the work performed, which provides clarity on what maintenance activities were conducted, along with the date of completion to establish a timeline for the maintenance history.

Additionally, the requirement for the approving person’s signature lends authority and accountability to the record. This signature indicates that the individual endorses the work and asserts that the aircraft meets all necessary airworthiness standards. Including these essential elements in the maintenance record not only fulfills regulatory requirements but also ensures that there is a transparent log of maintenance history, which is vital for future reference or inspections.