Performance
SPEED
1,653 mph (2,660 kph) [Diff.+99 mph]
SPEED
1,553 mph (2,500 kph) [Diff.-99 mph]
RANGE
2,423 miles (3,900 km) [Diff.+137 miles]
RANGE
2,287 miles (3,680 km) [Diff.-137 miles]
CEILING
59,711 ft (18,200 m) [Diff.+656 feet]
CEILING
59,055 ft (18,000 m) [Diff.-656 feet]
RATE-OF-CLIMB
50,000 ft/min [Diff.-10,000 feet]
RATE-OF-CLIMB
60,000 ft/min [Diff.+10,000 feet]