Can a retired airline employee flying standby without a confirmed seat qualify for a 72 hour trans

Hi- can a retired airline employee flying standby for both inbound and outbound flights to Shanghai qualify for the 72 hour free transit exemption ?

We are listed on the flights but it is not a confirmed seat until about 1 hour prior to the respective flight ?

Desiring to visit Shanghai but my Chinese visa expired in Sep 2016. Can I use a qualify for a 72 hour free transit being a standby traveler ?