Why Does Boeing Always Use the Number “7” on Its Airplanes?

When you look at the screen to search for your flight at the airport almost all Boeing airplanes start with 7 and end with 7 You must have seen it.

Even sometimes confusion over numbering We can live. So what is the reason behind this situation?

There are various theories about Boeing’s numbering system.

For example, according to some from the University of Houston, the numbers ‘707’ sine and cosine values ​​of 45 degrees in mathematics are the first three digits.

However, the 707 model Considering that the wing angle is 35 degrees This theory doesn’t seem very consistent.

Another common misconception is However, it is believed that 707 indicates passenger capacity. In fact, the maximum passenger capacity of the Boeing 707 is 219 people.

So what’s the real deal?

Boeing’s 7×7 format numbering system It is thought to be basically a practical choice.

Many sources say the system was developed by Boeing engineers across different models in the company’s portfolio. It allows them to easily discriminate states.

Here’s an overview of Boeing’s numerical naming sequence:

• 100 series: The first produced by Boeing for biplanes a series that was used but is not currently in use.
• 200 series: For early monoplanes.
• 300 and 400 series: For propeller-driven commercial airliners and the 367-80 jet, the prototype of the 707.
• 500 series: For aircraft with turbo engines.
• 600 series: For missiles and rockets.
• 700 series: Jet engine commercial airplanes for.
• 800 series: An unused series.
• 900 series: It was used for the 929, a turbojet hydrofoil produced by Boeing.

There is a simpler reason behind the last digit being 7.

Boeing initially After achieving great success with the 707 model He adopted the 7×7 format in aircraft names. The number sequence was very attractive from a marketing perspective and was catchy.

It seems like they are not wrong at all, what do you think?

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