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Why Did Boeing Choose The Number "7"  
User currently offlineEuroflyer From France, joined Jun 2012, 32 posts, RR: 0
Posted (14 years 4 days 15 hours ago) and read 15531 times:

Why did they pick that number (727,737,747 e.t.c.)? Is there a reason behind it? And what about Airbus; where "A3" chosen just because it souds good?

Born to fly !
16 replies: All unread, jump to last
User currently offlineTupolev154B2 From United States of America, joined Jun 2000, 1332 posts, RR: 2
Reply 1, posted (14 years 4 days 14 hours ago) and read 15462 times:

Don't know about Boeing, but Airbus started using the A3## designation for its planes with the A300. In the A300, the 'A' most likely stands for "Airbus", which was the name that was used for the plane that was specified, while the 300 is the number of pax the plane was originally supposed to be designed for.

User currently offlineEuroflyer From France, joined Jun 2012, 32 posts, RR: 0
Reply 2, posted (14 years 4 days 14 hours ago) and read 15450 times:


So does anybody here know about Boeing's number?

Born to fly !
User currently offlineSurf From , joined Dec 1969, posts, RR:
Reply 3, posted (14 years 4 days 11 hours ago) and read 15412 times:

why on earth did Airbus ever want to liken their aircraft to *buses*...ick...a bus that flies; how appealing.

User currently offlineN766AS From , joined Dec 1969, posts, RR:
Reply 4, posted (14 years 4 days 11 hours ago) and read 15403 times:

Wondering why Boeing chose "7"? They didnt really choose it.. heres why:
Ever since Boeing started building planes back in the early 20's, they started using a number system. The first planes were "0"s. They had two digit numbers. These were ALL biplanes. In the late 20s, Boeing started making the "2"s (the Boeing model 100 was a biplane as well, so they skipped the "1"s I believe). All of the planes with a 200 designation (i.e. 214, 234, 266) are prop planes with low wings. The "3"s are all commercial/military props (i.e. 307 Stratoliner, 314 Clipper, 345/B-29). These were being made in the 30s and 40s. The "4"s were the first Boeing jets, such as the Boeing Model 420 (B-47 Stratojet) and Model 464 (B-52 Stratofortress). The "5"s, if I remeber correctly, are Boeing model long-range rockets or missles (someone may be able to correct me). I cannot remember what the "6"s were. Then we come to the "7"s. These are the Boeing jets that are most famous- the 707, 717, 717-200, 720, 727, 737, 747, 757, 767, and 777.
0 = Biplanes
2 = Monoplanes
3 = Large commercial/military props
4 = Military jets
5 = Missiles (I believe)
7 = Commercial jets

I hope this helps ya. I believe you can get MUCH MORE information in a large book titled "Boeing: ..." something or other. Should be available in your local library. It also says what the 5s and 6s are.

User currently offlineRayChuang From United States of America, joined Jun 2000, 8002 posts, RR: 5
Reply 5, posted (14 years 4 days 11 hours ago) and read 15381 times:

surf wrote:
why on earth did Airbus ever want to liken their aircraft to *buses*...ick...a bus that flies; how appealing.

Remember what the original proposal by British European Airways and Air Inter circa 1965 was for: a 300-passenger airliner that could fly routes within Europe. The name "Airbus" came about because that original specification was akin to a commuter run with a 300-pax "vehicle."

The only reason why the A300B came about with its smaller size was because Rolls-Royce didn't have the resources to build the RB. 207 53,000 lb. thrust turbofan (they were tied up with the RB. 211 project for the Lockheed L1011) that was proposed for the original A300 design. Therefore, the plane ended up with a shorter fuselage so it could use the GE CF6-50 and JT9D-7W engines then in development for longer-range versions of the DC-10.

User currently offlineEuroflyer From France, joined Jun 2012, 32 posts, RR: 0
Reply 6, posted (14 years 4 days 10 hours ago) and read 15365 times:


Born to fly !
User currently offlineTcttx From United States of America, joined Dec 1999, 219 posts, RR: 0
Reply 7, posted (14 years 4 days 10 hours ago) and read 15363 times:

why on earth did Airbus ever want to liken their aircraft to *buses*...ick...a bus that flies; how appealing.

It's actually quite apropos, considering many passengers nowadays are similar to bus passengers of yesterday!  

User currently offlinePrebennorholm From Denmark, joined Mar 2000, 6424 posts, RR: 54
Reply 8, posted (14 years 4 days 10 hours ago) and read 15343 times:

Boeing simply happened to have a few successful planes with a seven in the number. The 247 was a direct competitor to the DC-3, quite successful even if it lost the competition badly. Equally famous were the four engined 307 (commercial version of B-17) and 367 Stratocruiser (much developed commercial version of B-29). And the 314 Clipper (three-double-seven!).
The 707 prototype in fact carried the name 367-80. This was also to "hide" that some companies had already ordered the plane while trying to keep it secret for the competitors what a revolutionary design it was. But it was registered N707 plus some letters which I don't remember. A registration which Boeing had used earlier for other prototypes.
Of course the people around the prototype called it "the 707", and in the end it sticked to the plane.
Sure there was confusion about the naming forty years ago. Of course they made several major versions, which were named 707-120, 707-220, 707-320 and 707-420. Then a much revised version especially for shorter routes was supposed to be named 707-720. But somehow it lost the 707-part and got its own name 720.
The name Airbus was invented by the politicians which negotiated the international agreements for the Airbus consortium. The vision was to make air travel as easy and accessible to the ordinary public as taking a bus and remove the glory from air travel. So the name was more or less obvious. The first project got the name A300 as a code meaning Airbus for 300 pax. It was supposed to be powered by a new Rolls Royce engine which lacked far behind in development. (It later became the RB-211 after having bankrupted Rolls Royce and found service in the Tristar). To fill the engine gap the whole project was revised to rely on two GE CF-50 engines, same as the three on the DC-10. It was so much less powerfull than the original RR project that the plane had to be reduced in size to around 225 pax. The revised project was consequently named A300B - B for B-version.
And there are still many A300B-1, A300B-2 and A300B-4 around, even if it seems that they have changes name to A300-B1, -B2 and -B4 in the meantime.
Why the next Airbus became A310? No idea, but we can guess that Airbus simply adopted the Boeing habit of adding ten to the previous number.
Anybody looking for logic in Boeing and Airbus naming systems will seach in vain.
Best regards, Preben Norholm

Always keep your number of landings equal to your number of take-offs, Preben Norholm
User currently offlineRWally From United States of America, joined Nov 1999, 555 posts, RR: 3
Reply 9, posted (14 years 4 days 7 hours ago) and read 15320 times:

I know someone who works for Boeing and he said they made a plane called the 7X7 and he said the plane never crashed. They made another plane, and it didn't have a 7 in it, and for some reason it crashed. Out of concern every other plane had a 7 in the model number.

User currently offlinePete From United States of America, joined May 2005, 0 posts, RR: 1
Reply 10, posted (14 years 4 days 6 hours ago) and read 15312 times:

When Boeing was designing the 707, it was called, as you said, the 367-80. As I understand it, the -80 was Boeing's 707th airframe design. Pretty soon, the designation 707 stuck.

The 720 was actually first called the 707 020 and shortened to 720; The only Boeing jetliner not having the designation 7x7.

The reason there was no 717 until recently, is because the original plane assigned the designation 717 was a military version of the 707, I believe the KC 135 air refueler and/or the EC 135 "Looking Glass."

Boeing skipped 717 and proceeded with the aircraft we all know.

I think it's interesting that Boeing assigned a civillian aircraft the designation 717 after all these years.

User currently offlineModesto2 From United States of America, joined Jul 2000, 2791 posts, RR: 5
Reply 11, posted (14 years 4 days 6 hours ago) and read 15309 times:

I was taking a tour of the Boeing Everett facility and the tour guide said the "7" originated from the registration of the first 707. After that, Boeing decided to use the "7" on its commerical fleet.

User currently offlinePatches From United States of America, joined Aug 2000, 292 posts, RR: 0
Reply 12, posted (14 years 4 days 6 hours ago) and read 15305 times:

Hey Tupolev, I do believe the question was about boeing. NOT Airbus!

User currently offlinePatches From United States of America, joined Aug 2000, 292 posts, RR: 0
Reply 13, posted (14 years 4 days 5 hours ago) and read 15290 times:

My apologies Tupolev, I did not read the whole message on airbus. Thankyou for the info about airbus.

User currently offlineBlink182 From Azerbaijan, joined Oct 1999, 5480 posts, RR: 15
Reply 14, posted (14 years 4 days 4 hours ago) and read 15281 times:

you need to search the archives since i already posted a topic asking the same question  

Give me a break, I created this username when I was a kid...
User currently offlineFanofjets From United States of America, joined Apr 2000, 1964 posts, RR: 3
Reply 15, posted (14 years 4 days 3 hours ago) and read 15276 times:

The Boeing model series was as follows:
100s - Helicopters
200s - Prewar airliners and military aircraft
300s - World War II and postwar airliners
400s - Jet Bombers (except L-15 Scout)
500s - Turbines
600s - Missiles
700s - Jetliners (all commercial, except for the original
717 for the Stratotanker)
800s -
900s - Hydrofoils and experimental military aircraft

Interestingly, the first of the 700 series, the Model 701 was to be a mach 2 supersonic bomber. Designated by the USAF as the B-59, none were ever built.

The aeroplane has unveiled for us the true face of the earth. -Antoine de Saint-Exupery
User currently offlineJgiardin From United States of America, joined Aug 2000, 45 posts, RR: 0
Reply 16, posted (14 years 4 days ago) and read 15255 times:

You want the answers, I'll give you the answers. We all know that Sir Remington Boeing started the company in 1983 originally making hair dryers. Then, one day, he was walking out of his house when a leprechan approached him and taught him how to make an airplane. In 1984, after putting hours of time into his flying machine, Remington finally invented the first airplane. It was named the flying man-holder, and it was a marvel of technology. Then, in 1985, that same leprechan approached Remington once more, and demanded that he change the name of the creation. If the name was changed, and included the leprechan's favorite number (which was 7), Remington would recieve twenty dollars. It was an offer that couldn't be refused. So Remington Boeing changed the name of the flying man-holder to the Boeing 707. Then, the next night, he came up with six, or like ten other designs for commercial airplanes. One of these, which was going to be called the 787, was scrapped because the number would give away Remington's home address. And that is the story of how man conquered the number system.

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