as upgraded first-class suites have become heavier while economy-class seats are now lighter. Conversions of the flag carrier’s 14-strong A330-300 fleet are now beginning... Swiss Cabin Retrofit ...

In a statement, Swiss said that as industry trends mean that first and business class seats get heavier (to provide more privacy) and economy seats ... unfortunately the A330 is one of those.

Swiss International Air Lines' new first-class seats make its Airbus A330s too nose-heavy. The problem stems from opposing design trends for modern premium cabins versus economy seats. Remedies ...