The reporter confirmed from a number of people familiar with the matter that on March 10, the Civil Aviation Administration's Flight Standards Department issued an internal telegram with a rating of “Special. Ming Dian”. The telegram was called “Notice Concerning Carrying Out a Comprehensive Operational Safety Audit of HNA Co., Ltd.” The notice said that since this year, HNA Co., Ltd. has had a total of 5 flight crew unsafe incidents. In particular, a voice warning was triggered during the B737 flight resumption process on March 3, which revealed the company's problems with the implementation of regulations, production organization, and safety management. Following research by the Civil Aviation Administration Safety Committee, it was decided to carry out a comprehensive operational safety audit of Hainan Airlines. The schedule is from March 10 to April 18. The audit was carried out in three stages, coordinated by the Civil Aviation Administration's audit team. The various specialized departments of the Central South Administration, the Hainan Regulatory Bureau, and Hainan Airlines proceeded in an orderly manner according to the work priorities of each stage.

The reporter confirmed from a number of people familiar with the matter that on March 10, the Civil Aviation Administration's Flight Standards Department issued an internal telegram with a rating of “Special. Ming Dian”. The telegram was called “Notice Concerning Carrying Out a Comprehensive Operational Safety Audit of HNA Co., Ltd.” The notice said that since this year, HNA Co., Ltd. has had a total of 5 flight crew unsafe incidents. In particular, a voice warning was triggered during the B737 flight resumption process on March 3, which revealed the company's problems with the implementation of regulations, production organization, and safety management. Following research by the Civil Aviation Administration Safety Committee, it was decided to carry out a comprehensive operational safety audit of Hainan Airlines. The schedule is from March 10 to April 18. The audit was carried out in three stages, coordinated by the Civil Aviation Administration's audit team. The various specialized departments of the Central South Administration, the Hainan Regulatory Bureau, and Hainan Airlines proceeded in an orderly manner according to the work priorities of each stage.