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A Question Regarding Boeing's 727-100  
User currently offlineLax From United States of America, joined Dec 2000, 2290 posts, RR: 3
Posted (12 years 9 months 3 weeks 4 days 19 hours ago) and read 1594 times:

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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5 replies: All unread, jump to last
 
User currently offlineDe727ups From United States of America, joined Nov 2000, 814 posts, RR: 13
Reply 1, posted (12 years 9 months 3 weeks 4 days 19 hours ago) and read 1579 times:

Dang dude....I fly those things and I have no idea whatsoever.....

User currently offlineLindy field From United States of America, joined Mar 2001, 3118 posts, RR: 14
Reply 2, posted (12 years 9 months 3 weeks 4 days 19 hours ago) and read 1572 times:
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Dunno, Lax. Good question.

User currently offlineTango-Bravo From United States of America, joined Jun 2001, 3805 posts, RR: 29
Reply 3, posted (12 years 9 months 3 weeks 4 days 18 hours ago) and read 1561 times:

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.





User currently offlineLax From United States of America, joined Dec 2000, 2290 posts, RR: 3
Reply 4, posted (12 years 9 months 3 weeks 4 days 18 hours ago) and read 1558 times:

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.


User currently offlineFlagshipAZ From United States of America, joined Jan 2001, 3419 posts, RR: 14
Reply 5, posted (12 years 9 months 3 weeks 4 days 18 hours ago) and read 1554 times:

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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