Captain, a lot of these guys will have transit authorities only, so these guys can sign up to a check 2 with limited ability for signing defects. These guys cannot delegate tasks to others and then certify for them, they must carry out the job themselves. So if you do see one signature only for a whole check and it is a ring in ask questions. Qantas has lost their transit/maintenance authoritie approvals before, it would kill them now.