Chris
unfortunatley alot of people do not want to discuss the issues this was a major disater and has affected families which i am sure you understand in so many ways most of the info i have recieved has been through websites and newspapers
going to the new zealand archieves in wellington they have alot of info relating to the crash and personal things try there
good luck i have compiled a book for my children for when they grow up altough they are old enough now they know where there grandparent is and what happened
good luck again
thoughts are with you