Porroham
Firstly Norwegians 738 & 7M8 deployed on the Transatlantic are 180 minutes ETOPS not 120.
There have been a number of different issues over the last 10 days that have caused some to be non ETOPS compliant, from things like APU inop, odd Maintainance msgs no real pattern.
The limit in number of seats at introduction was around 155 this is now increased to around 175, however I have seen and flown numerous sorties with 189 ( full)
A number of additional NG are being upgraded to ETOPS spec as week speak.