ATC: CSN 3309, Beijing Control, if you read, squawk ident.
管:南航3309,北京区调,如果你听见,设置应答机识别。
ATC: CSN3309, squawk ident observed, check your transmitter, I read you 1.
管:南航3309,应答机识别观察到,检查发射机,我听你1。
ATC: CSN3309, turn right 090, descend to 5400m on standard, we will continue radar control, I read you 1.
管:南航3309,右转航向090,下5400米,标准气压,我们将继续雷达管制,我听你1。
Question: What problem does CSN3309 have? 南航3309有什么问题?