This was the first serious accident for the 777 since it began commercial service in 1995.
12+ years of safe service
http://www.telegraph.co.uk/travel/ma...athrow-117.xml
Says there are 667 in service
http://en.wikipedia.org/wiki/British...ys_Flight_BA38
Says this one G-YMMM is c/n 30314/342
so a finger in the air guess makes it around 5-6 years old.
http://en.wikipedia.org/wiki/Boeing_777#777_sales
Looking at delivery numbers here this was 'craft was delivered in 2001.
http://www.airliners.net/open.file/1313756/L/
I'd think Boeing are more concerned with getting the 787 off the ground than this.