Re: Boeing 720

From: (Christopher Davis)
Organization: Yoyodyne Propulsion Systems
Date:         10 Jul 95 03:18:18 
References:   1 2 3 4 5 6
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KLS> == Karl Swartz <kls@ohare.Chicago.COM>

 KLS> Boeing's customer code for itself is 20 (I have no idea why it's not
 KLS> 00) [...] I don't know if any aircraft actually ended up with the 20
 KLS> customer code -- the first 757, 767, and 777 all have a 00 code, so
 KLS> perhaps 20 was just 707 era and they've switched since then.

They appear to have switched at the 727.  Appendix VIII of Bowers's
_Boeing Aircraft Since 1916_ lists N270L as a "727-200" for "Boeing test"
(C/N 19356) which later went to Olympic as SX-CBF.  I suspect customer
code 20 is still reserved for Boeing, too.

However, as usual, there are some anomalies.  The first 727-100 and
737-100 were each constructed under their planned purchaser's customer
code (727-22 N72700/N1784B, built for United and later RR N7001U if I
recall correctly; 737-130 N73700, built for Lufthansa but bent during
tests and sold to NASA as N515NA, now at Ohio State I think).  The 747
testbed is listed in Bowers as a -121 model.

Bowers lists a pair of "737-200" models for TAAG-Angola (D2-TAA/TAB c/ns
21172, 21173; no other details are given).  Their normal customer code
seems to be M2 as they have a number of 737-2M2s listed as well (including
D2-TAA/TAB with those c/ns).  This may be a Bowers error; he has a "Lauder
Air" buying some 767s too :)

The 757 and 767 testbeds are both listed as "-200" models (N757A, N767BA).
Christopher Davis * <> * <URL:>
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