Performance
SPEED
1,317 mph (2,120 kph) [Diff.-236 mph]
SPEED
1,553 mph (2,500 kph) [Diff.+236 mph]
RANGE
2,622 miles (4,220 km) [Diff.+429 miles]
RANGE
2,193 miles (3,530 km) [Diff.-429 miles]
CEILING
50,000 ft (15,240 m) [Diff.-12,336 feet]
CEILING
62,336 ft (19,000 m) [Diff.+12,336 feet]
RATE-OF-CLIMB
50,000 ft/min [Diff.-9,000 feet]
RATE-OF-CLIMB
59,000 ft/min [Diff.+9,000 feet]