On June 7, a netizen posted a video saying that the FM9088 flight from Shenyang to Shanghai Pudong took off from Shenyang Taoxian Airport at around 10:20 am that day, and soon started returning. After flying around the air for many laps, it landed at Shenyang Taoxian Airport at around 11:45 am.

Flight information
In response, on June 8, Shanghai Airlines exclusively responded to the Jiefang Daily and Shangguan News that the above-mentioned flight found a fault alarm message after taking off. In order to ensure flight safety, the company decided to return to Shenyang for further inspection, and the aircraft landed safely after flying according to the procedures. The company timely adjusted the follow-up flight arrangements and actively carried out passenger communication and air-to-ground service guarantee. Shanghai Airlines has always put safety first. The company deeply apologizes for the inconvenience caused to passengers by this flight and expresses its sincere gratitude to passengers for their understanding and cooperation.
Industry insiders said that China's civil aviation always puts passenger safety first, and similar fault warnings may not necessarily affect safety, but under normal circumstances, airlines will actively increase safety redundancy to ensure passenger safety.
As for why the aircraft circled around before returning, civil aviation captain Chen Jianguo said that the air circle of the aircraft before returning is mostly caused by fuel consumption in the air and landing after the weight is less than the maximum landing weight. The crew found a problem on FM9088 flight, but the problem was not particularly urgent, otherwise they would choose to land directly overweight.
Source: Jiefang Daily