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16th October 2006 | 01:46

#14 (permalink)

barit1

Joined: Feb 2005

Posts: 4,581

Likes: 0

From: flyover country USA

If one has very precisely calibrated eyeballs, the nacelles on the -400 are just a mite bigger in diameter than earlier models - bigger fans!

PS - there are a very few earlier 747 models with the bigger fan. Anyone care to guess?