Hi there,
I have posted on the Aussie Board, and just popping in here to mention that last evening I spoke with a friend who has had a long career in Admin with the QF flying machines
I asked about the passenger lists and where held and for how long and where to get access etc.
You may well run into privacy issues IF the manifests are actually ever archived. BUT my friend did offer a suggestion that may help
so I share here as it may involve NZ passport.
In 1948 in UK laws were changed to allow the dominions the right to afford their citizens, CITIZENSHIP of their own nation, so Passports issued by each dominion were no longer simply passports issued to "British Subjects" on behalf of the United Kingdom, but by/in accord with each dominion's own parliament's laws. (JM edited that sentence hopefully to make it read a tad better). In Australia those changes were effective from 26 Jan 1949, so Australian Citizenship dates from then. Neither of us know how/when NZ sorted out that step in Citizenship.
So the question my friend suggests could well be:
What travel documents were our OPs parents travelling on in 1949, and
what administration has retained any archival material of that travel through various jurisdictions.... My friend even suggested they may have transshipped in Singapore en route to NZ. Were they travelling on a Hong Kong passport? (perhaps our OP's mum was added onto Kenneth's on their marriage?) Were they travelling on an NZ passport? Were they travelling emergency/diplomatic paperwork?
http://www.atlasofbritempire.com/uploads/BE_Passports.pngVery interesting topic. I am happy to follow it across several boards, as each nation's locals will hopefully have a greater depth of local knowledge as to how to find the various pieces of the puzzle to help the OP.
Cheers, JM