Transperth ( as the MTT was rebranded in 1986 ) and its contractors began withdrawing this sizable fleet of O305s in October 1999 .
It would be 2012 until the last were withdrawn .
Transperth ( as the MTT was rebranded in 1986 ) and its contractors began withdrawing this sizable fleet of O305s in October 1999 although it would be 2012 until the last were withdrawn .