sia777Singapore Airs’ 4 class 777-300ER aircraft are confured with just 4 open first class seats in a 1-2-1 confuration. These are followed by 48FORWARD ZONE FORWARD ZONE Boeing 777-300 Extended Range 4-class First Class Seat First Class - F 4 seats Bassinet C H 49 49 50 50 51 51 52 52 53 53 54 54 A B D E G