Mechta
"The original 777 had its fair share of issues too. I worked on the 777 Fuel Quantity Indicating System (FQIS) in the late 90s. We had entire ship sets of the ultrasonic probes for the aircraft already in service back for rework/replacement. Most new models of aircraft will have components which don't have same performance, reliability or life as those further down the production run.."
Yes, you could replace 777 with just about any airliner developed in the last 60 years, and the above statement would still hold true, That's just the nature of certification and service entry.