Offstand - thanks for keeping your ears (and the like) open! Any info you get appreciated!
ex cabin crew - suggest you write to your friend c/o:
Air New Zealand,
Room 234
East Wing
Terminal 3 Arrivals Building
Heathrow Airport
Hounslow
Middlesex TW61NZ
UNITED KINGDOM
Make sure you mark the envelope for his attention, or put an envlope for him inside a bigger one with a note explaining this is for a particular crew member. (am I making sense?!)