I don't know of any duplicated code. Computers aren't smart enough to tell the difference by themselves. Al ----- Original Message ----- From: "Roger & Amanda La France" <lafrance@xxxxxxxxxxx> To: <AIRLINE@xxxxxxxxxxxxxxxxx> Sent: Wednesday, August 13, 2003 9:50 AM Subject: Re: Piedmont/US Air, Request > What if Uncle Joe's Airline and Garage Door Company codeshares with QX > on their flight to SDY. Then Uncle Joe's letter code would now be mixed > up with David's Big Bad Airline. > > -----Original Message----- > From: The Airline List [mailto:AIRLINE@xxxxxxxxxxxxxxxxx] On Behalf Of > David MR > Sent: Tuesday, August 12, 2003 11:06 PM > To: AIRLINE@xxxxxxxxxxxxxxxxx > Subject: Re: Piedmont/US Air, Request > > > Not a dumb question. > > There's two codes used for airlines from 3 different organizations - > ICAO (International Civil Aviation Organization) uses 3 letter codes. > The IATA (International Air Transport Association) and ATA (American > Transportation > Association) both use 2 character codes. > > The 3 letter codes are used on flight plans and other Air Traffic > Control functions. The 2 character codes are used in airline > reservation systems, timetables, etc. Originally it was 2 letters > allowing for up to 676 combinations. Some combinations, I think, aren't > used. Once they ran out of 2 letter codes, they went to 1 letter/1 > number and 1 number/1 letter codes, allowing for even more combinations. > > An interesting sideline. It is possible for 2 airlines to have the same > 2 letter code, provided the airlines have no possibility of flying in > each other's territories. For example, Uncle Joe's Airline and Garage > Door Company may fly flights with a Cessna 172 in only the state of > Arizona while David's Big Bad Airline flies larger aircraft but flies > only in Australia. The two airlines do not have areas where both > companies fly so they could be assigned the same 2 letter code. > > The plan, at least at one time, was for all airlines to have 3 letter > codes but that seems to be more of a pipe dream. No one wants to change > all the computer programs to accommodate 3 letters. David R > http://home.attbi.com/~damiross > http://home.attbi.com/~damiross/books.html > > > ----- Original Message ----- > From: "Allan9" <exatc@xxxxxxxxxx> > To: <AIRLINE@xxxxxxxxxxxxxxxxx> > Sent: Tuesday, August 12, 2003 19:07 > Subject: Re: [AIRLINE] Piedmont/US Air, Request > > > > David > > A dumb question where did B6 come from? > > AFAIK only 3 letter contractions assigned. > > Al > > > > ----- Original Message ----- > > From: <damiross2@xxxxxxxxxxx> > > To: <AIRLINE@xxxxxxxxxxxxxxxxx> > > Sent: Tuesday, August 12, 2003 6:59 PM > > Subject: Re: Piedmont/US Air, Request > > > > > > > A good way to do it is to name the airline in full the first time > > > then > > give the > > > code and use the code after that. Example: JetBlue (B6) blah blah > > > blah also blah blah blah also blah blah blah and B6 blah blah blah > > > blah blah blah > > > > > > Just a suggestion > > > David > > > > > > > B6 is jetBlue, the hottest airline around. Everyone seems to know > > > > > QQ > > and WN, > > > > so what is the big deal. I don't feel like typing jetBlue all the > time, > > JB > > > > means something else and I don't know 3 letter codes > > > > > > > > In a message dated 8/12/2003 10:19:33 AM Pacific Daylight Time, > > > > kurtzke@xxxxxx writes: > > > > > > > > << Allegheny (a.k.a. Agony) become U.S. Air before it "acquired" > > Piedmont. > > > > (Interesting tidbit: the other competitor for Piedmont was CSX, > > formerly > > > > known as the Chessie System for you RR buffs). The reason for the > name > > > > change was the subject of much caustic and snide comments -- > > > > shortly > > after > > > > the change, on a flight where everything was going wrong, an F/A > > > > said > > in > > > > frustration, "it's still Allegheny." > > > > > > > > When U.S. Air took over Piedmont, it changed its red U.S. Air > > > > logo to > a > > > > logo where "U.S." was blue and "Air" still red (or maybe it was > > > > the other way around). That was part of their way of > > > > "integrating" > > Piedmont. > > > > It did look nicer. > > > > > > > > Request: When naming airlines, please give the name, especially > > > > when > > the > > > > two letter code does not suggest the name. Most folks know AA is > > American > > > > -- but not everyone -- but I certainly don't know what B6 is. > > > > >> > > > > > >