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LAX
Posts: 2186
Joined: Sun Dec 24, 2000 11:06 am

A Question Regarding Boeing's 727-100

Wed Nov 07, 2001 1:42 pm

Why are some 727's listed as 727-23 or a 727-51??
These types don't say "727-123" or refer to the -100 at all. Why was this numbering done this way by Boeing Company? Anybody know?

No other Boeing type 100 has this 2-digit numbering system (i.e. the 737 and 747).


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DE727UPS
Posts: 810
Joined: Wed Nov 22, 2000 10:55 am

RE: A Question Regarding Boeing's 727-100

Wed Nov 07, 2001 1:54 pm

Dang dude....I fly those things and I have no idea whatsoever.....
 
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lindy field
Posts: 2938
Joined: Tue Mar 27, 2001 1:52 pm

RE: A Question Regarding Boeing's 727-100

Wed Nov 07, 2001 1:57 pm

Dunno, Lax. Good question.
 
Tango-Bravo
Posts: 2887
Joined: Sun Jun 17, 2001 1:04 am

RE: A Question Regarding Boeing's 727-100

Wed Nov 07, 2001 2:24 pm

While most of American's 727-100s were designated 727-23, two of the later examples they received (N1964 and N1965) were listed as 727-123s. Likewise, most of Northwest's 727-100s were 727-51s although their fleet also included two 727-151Cs (N488US and N489US). Why both designators were used remains, to me, an unanswered question.

It is of interest to note that the Boeing 720 had a unique system of airline customer designators. A 720 ordered by American was a 720-023 while a fanjet 720 ordered by Northwest was a 720-051B. The 720 was only aircraft type to have a "0" preceding the Boeing customer code in the model number.



 
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LAX
Posts: 2186
Joined: Sun Dec 24, 2000 11:06 am

RE: A Question Regarding Boeing's 727-100

Wed Nov 07, 2001 2:33 pm

Thanks TANGO.....Yes, I've noticed the odd "Zero" model numbers for some B720's. How can you have a "Zero" series aircraft??

Anyhow, something to discuss anyway.
 
FlagshipAZ
Posts: 3192
Joined: Sun Jan 28, 2001 12:40 am

RE: A Question Regarding Boeing's 727-100

Wed Nov 07, 2001 2:40 pm

It's basically a matter of record-keeping on Boeing's part. The older 727s will have the -0XX designation, while you can tell the newer ones by the full subtype code, such as -123. If you can find this link...
ftp://ftp.chicago.com/pub/airliners/boeing-code
...it may explain it better than I can, alto it won't give a definite answer. Hope that helps. Regards.
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