w e b 77The 777-300ER (ER for Extended Range) is the B-market version of the 777-300. It features raked and extended wingtips, a new main landing gear, reinforced nose gear, and extra fuelKeep reading to find out 10 things you didn’t know about the B77W. 10. It is the Most Numerous B777 Variant. The B77W variant of the 777 is the most common of its type,