All around the world there is a Boeing B737 that takes off or lands about every 5 seconds. Today, the Next Generation Boeing, or better known as the more easily pronounced “NG”, has gone over to dominate the current skies. Its predecessors, the Boeing B737-300/-400/-500, now referred as “B737 Classic”, had once done the same with short haul travels.
Even though the numbers of earlier models are gradually decreasing, there are still plenty being operated by airlines worldwide, so these aircraft can be easily spotted. The question is how to separate each type? One of the most noticeable differences these two brothers have is the easily spotted winglets, or the lack of them. But there is more than meets the eye. Here are some of their key differences: