Objective To evaluate the status of lumbar degenerative lesions in Jagdpanel pilots. Methods Asymptomatic Jagdpanel pilots (group A, mean age 42 years, mean cumulative flight time 2400 h; group B, mean age 27 years, mean cumulative flight time 930 h) who had CT examination 4 years ago, and control group (group C) who had no flight experience at the corresponding age were reviewed. The results showed a significant increase in the number of herniated discs in each group compared with the CT findings 4 years earlier, and a significant increase in the number of bone stenosis in the control group and in the number of spinal stenosis in the older pilots in group A. Compared with 4 years ago, the CT differences between the old pilots and group C were significantly lower. It was concluded that the development of lumbar degenerative lesions in Jagdpanzer pilots was earlier than that in ground personnel. The difference with the control group gradually decreased with the increase of age. Zhu Keshun, Department of Orthopedics, Air Force General Hospital