Which of the following is an acceptable basis for data used in major repairs?

The most acceptable basis for data used in major repairs is GACA-approved data. This ensures that the information being utilized meets the standards and regulations set by the General Authority of Civil Aviation (GACA), which is critical for maintaining safety and compliance in aviation operations. GACA-approved data typically undergoes rigorous evaluation and verification, ensuring it is reliable and current, making it highly authoritative for guiding repair processes.

While manufacturer recommendations, peer-reviewed data, and previous maintenance records each provide valuable insights and information, they may not always fulfill the specific regulatory requirements outlined by GACA. Manufacturer recommendations may vary based on specific aircraft models or components, peer-reviewed data may not always pertain directly to aviation maintenance, and previous maintenance records provide historical context but may not reflect the most updated standards or practices. Therefore, GACA-approved data stands out as the most reliable and acceptable foundation for major repair work, ensuring adherence to the necessary safety regulations and protocols in the aviation industry.