Re: United's flight number scheme (was Re: AC's 3xxx flight #s)

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Insightful.

United's 7xxx are now Express flights.

Another curious question, though I have no direct evidence of it myself. =
Are there any flight numbers that due to linguistic reasons are not =
used? For example manufacturers of products with serial numbers with =
either use 1's or I's, but never both (same goes with O's and 0's.)

Matthew

-----Original Message-----
From: The Airline List [mailto:AIRLINE@LISTSERV.CUNY.EDU] On Behalf Of =
Michael C. Berch
Sent: January 25, 2002 12:31 PM
To: AIRLINE@LISTSERV.CUNY.EDU
Subject: United's flight number scheme (was Re: AC's 3xxx flight #s)


As of a year or two ago, United's scheme was approximately this:

UA1-UA2                                 Round-the-world flights (gone =
now?)
UA3-UA799                                       General domestic and =
Canada flights
UA800-899                                       Pacific flights (incl. =
US continuation segments)
UA900-999                                       Atlantic flights (incl. =
US continuation segments)
UA1000-1999                             General domestic and Canada =
flights
UA2000-2999                             Shuttle by United (gone now)
UA3000-3999                             Code shares on other carriers
UA4000-6999                             United Express (operated by =
contractors)
UA7000-7999                             Unused?  Charters?  Cargo?
UA8000-8999                             Reserved for ATC renumbering*
UA9000-9999                             Special flights - charters, =
extra "passenger
protection" sections,
                                                        delivery and =
repositioning flights, etc.

Normally even numbers are eastbound, odd are westbound.

* When flights with a similar or the same number would overlap in an ATC =
sector, one of the flights is renumbered, usually flight number +
8000.   For example, let's say UA921 operates LHR-ORD-LAX (with a change
of equipment in ORD).  If the inbound from London is seriously delayed, =
UA may dispatch the domestic continuation (most of whose pax have no =
idea "their" flight is delayed inbound, since there's an empty 767 =
sitting there at the gate), and the inbound LHR-LAX pax will be
accommodated on other flights.   The domestic leg will be redesignated
UA8921 for ATC purposes so it does not get confused with the "real" =
UA921 coming in from LHR.

These schemes have been upset by the termination of Shuttle by United; =
it would be nice to know UA's current scheme, although I'm sure it is =
somewhat similar.

--
Michael C. Berch
mcb@postmodern.com

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