The relevant standards for the retention period of aviation product quality information are divided into four categories: permanent, ten years, five years and three years. The specific classification is as follows:

1. The main quality records that prove the effective operation of the quality system and that the products meet the specified requirements shall be kept permanently.

2 aircraft maintenance and inspection quality records, the retention period is ten years.

3 service quality records, aircraft maintenance records and other quality records shall be kept for five years.

4 aircraft maintenance engineering data files should be kept for a period of not less than fifteen years.

The above results are obtained according to People's Republic of China (PRC) (China) civil aviation industry standards, and the specific provisions can be updated according to the actual situation. It is recommended to consult the latest industry standards for accurate information.