Performance
SPEED
551 mph (886 kph) [Diff.-37 mph]
SPEED
587 mph (945 kph) [Diff.+37 mph]
RANGE
4,300 miles (6,920 km) [Diff.-4,042 miles]
RANGE
8,342 miles (13,425 km) [Diff.+4,042 miles]
CEILING
38,993 ft (11,885 m) [Diff.-6,007 feet]
CEILING
45,000 ft (13,716 m) [Diff.+6,007 feet]