The names of American manufacturer Boeing's commercial aircraft are known for beginning and ending with the number seven. Starting with the 707 in the 1950s, Boeing has decades of developing popular jetliners with catchy-sounding numerical designations under its belt that generally follow the '7X7' pattern. But what is the reason for this numbering system? Let's take a look and find out.
from Simple Flying https://ift.tt/loxmeYg
via IFTTT
Comments
Post a Comment