The Executive General Manager of Qantas Engineering, Mr David Cox, said the issue was one of procedure, and did not have any safety implications.
Its a paperwork / compliance problem concerning mods to the Sta 178 bulkhead. A quite complex 100 plus page modification, it appears a certain part of the modification may not have been completed because it was not called up in the original paperwork.
Nothing to do with safety, (unless an oxygen cylinder lets go and you have a pressure spike that compromises the bulkhead) but that almost never ever happens, so how could it be a safety issue?