What is required for data to be used as a basis for approving major repairs or alterations?

For data to be used as a basis for approving major repairs or alterations, it is essential that the data is GACA-approved prior to its use. This requirement ensures that the information adheres to the regulatory standards and safety protocols established by the General Authority of Civil Aviation (GACA). By requiring GACA approval, the integrity and reliability of the data used in decision-making regarding repairs or alterations are upheld, which ultimately contributes to maintaining aviation safety and compliance with aviation regulations.

The other choices may have their own significance in different contexts, but they do not fulfill the specific requirement set forth by GACA for the approval process concerning major repairs or alterations. Only data that has undergone the GACA approval process can be confidently utilized in making critical maintenance and modification decisions.