Original sentence: Due to the reduced range of the Shuttle Carrier while mated to an orbiter, additional preparations such as removal of equipment from the orbiter would be necessary to reduce its weight.The two aircraft are functionally identical, although N911NA has ten upper-deck windows on each side, while N905NA only has three
Edited sentence: Due to the reduced range of the Shuttle Carrier while mated to an orbiter, additional preparations such as removal of equipment from the orbiter may be necessary to reduce its weight.The two aircraft are functionally identical, although N911NA has five upper-deck windows on each side, while N905NA only has two