Originally Posted by
Taker Park
If I may add something, currently some of the QF and AA international flights are clearing customs in TBIT.
QF non-SYD flights, and 1 AA flight which arrives after the TBIT customs facility is closed use TBIT. The T4 customs facility is staffed for one shift only, so when it is closed a sterile tunnel connecting T4 to TBIT is used to funnel arriving pax to the open facility (also used if T4 facility is overloaded, as it is sized for 1 flight at a time).