^Can't recall this being mentioned already, but I read this week that BA is planning to remove the Euro Traveller seats from each of its 757s as they are de-fleeted, and re-install them across the 737-400 fleet.

Apparently the 757 seats are only two years old, whereas the 737-400 ones are many times that. Changes will be made during the aircraft's scheduled maintenance.

Current 737 seats are significantly more expensive and labour intensive to overhall, whereas the newer 757 seats fit straight into the aircraft without any modifications.

Its saving about 25k per 737 to buy new seats - they are also 20kg lighter each, so will deliver a small fuel saving too.

So far two 737s have been fitted and as the 757s are phased out, more will be switched. There are enough seats for 13 of the 19 737-400's BA operates, they claim...