its been awhile..*dah lama kot tak update blog ni..heheeh....i didnt update my blog..no idea..no post..hehehe....currently im in the 5th month in MAS..and about one month and half to go..currently working at Line 3..narrow body..my favourite aircraft besides the t-7... :)
what im going to share with u..have ever u wonder about why Boeing used the number 7 in each their aircraft model..such as Boeing 777 or Boeing 737..instead of using number 3 like airbus do?
I tried to find the answer by using yahoo answer..and what i got is new knowledge for me..and there was two answer...
the first answer;
0 = Biplanes
2 = Monoplanes
3 = Large commercial/military props
4 = Military jets
5 = Missiles (I believe)
7 = Commercial jets
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.
its been the best answer from two answers given...
the second answer;
When Boeing returned to manufacturing commercial aircraft after its involvment in military production during WWII they created a numbering system for all their different product lines (piston airliners, jet airliners, spacecraft etc. etc.) 7XX was set aside for jet transports. The 707 was the first product from this line followed by the 720. These were followed by the 717, which was the internal Boeing designation for the KC-135 (717 has since become the marketing name for the MD-95). After that came the 727, 737, 747, 757, 767, 777 and ultimatley the 787, all being sequential in order of development.
As far as the reason why it's always 7X7 (apart from the 720) is simply a matter of maketing, Boeing's salesmen decided that Seven-Oh-Seven had more of a catch to it than Seven Hundred. As far as the 720 goes it was simply a one time "fluke" of naming and Boeing probably won't return to that scheme in the future (a 720 is essentially a shortened 707, and Boeing simply provides a different "dash" identifier for different submodels of a single aircraft, ie. 727-100 v. 727-200 v. 727-200Adv, and so on).
well...the info i got it was from the yahoo answer..but quite interesting fact..especially the code number *from the first answer..