747 in 1/72?

Only one on the market, by Model Transport I think, and it's a very basic vacform... Lots of work to turn it into something looking half-way decent. Made in the UK, and shipping costs are quite expensive!

I could swear that a friend of mine had an injection-molded kit, but I could be wrong...

you could try to get hold of a travel agency model, some of them are 1/72nd. i'll have a looksee to see if i can find some on the net.
Greg

found this but its a bit pricey, not sure about the scale but it looks about right
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2224036134&category=419

Entex made a 1/100th 747 which was listed at the time as the biggest plastic airplane model made. I have one along with the Tamiya 1/100th shuttle that are on my "yeah right, i'm gonna build that" list.

Never has been an injection molded kit in 1/72. Aircraft in Miniature Limited makes this plane in a precut vacuform kit under their Transport Wings Kits.
http://www.aim72.co.uk/TW05-001.htm
They also make a conversion set for a Shuttle Carrier
http://www.aim72.co.uk/TWC-006.htm
Cost for these two will set you back 100LBs British plus shipping.
You will need skill with vacuform, resin, white metal and photoetch but I have heard they are pretty detailed (for that price, they should be)
I have been temped to do this option myself. Only thing holding me back is the cost, and the skill level (OK, that's 2 things).

Thanks Philp, that's the one I was talking about!