Guest

### 438, 444, 338, 121, 221?

438, 444, 338, 121, 221
the above numbers refer to different 747 series jets.
400, 300, 200, 100-means the series
But the 2 digits after that, what do they mean.
Is it to do with variations of teh model, or which production line they are off, I have never known, perhaps someone can help me out?

LH423
Posts: 5903
Joined: Sun Jul 11, 1999 6:27 am

### RE: 438, 444, 338, 121, 221?

It probably has to do with the customer number Boeing assigns to each customer. In those cases they would be a British Airways 747-400 (BA's customer number is -*38). I'm not sure who -*44 or -*38 are (I think -*38 is Swissair), but 121 and 221 are for PanAm 747-100 and 727-200, respectively. I hope this clarifies things, somewhat.

LH423
« On ne voit bien qu'avec le cœur. L'essentiel est invisible pour les yeux » Antoine de Saint-Exupéry

exnonrev
Posts: 598
Joined: Tue Oct 19, 1999 4:26 am

### RE: 438, 444, 338, 121, 221?

Those last two digits are Boeing's customer code. It designates the airline, government, or leasing company who originally ordered the airplane. It's what differentiates, for example, a RR-powered 747-436 for British Airways from a GE-powered 747-406 for KLM.

BTW, the examples in your topic are -38 for Qantas, -44 for South African Airways, and -21 for Pan Am.

LH423
Posts: 5903
Joined: Sun Jul 11, 1999 6:27 am

### RE: 438, 444, 338, 121, 221?

BTW, the numbers are given out in the order that the company bought from Boeing. I'm not sure who number 001 was, but KLM was the 6th customer, hence all Boeing aircraft delivered new to KLM are -*06. Today there are so many customers Boeing has been relegated to useing a Number/Letter combo, for instance (this is hypothetical) a new 737-800 is given to a new start-up airline in Brazil (like I said this is hypothetical) and the company bought it new they would be given a designator code like 737-8N6. I apologize for not mentioning that earlier.

LH423
« On ne voit bien qu'avec le cœur. L'essentiel est invisible pour les yeux » Antoine de Saint-Exupéry

Guest

### Excellent

Thanks alot.
Now I finally know.
One last thing, the number of which is asigned to teh aircraft, say -38, Qantas aircraft, say they sell it, at a later date to another airline, doe sthe number stay with it, or does it change to to the code fo teh new airline that it is with?

Cheers!
PerthWA

Guest

### RE: 438, 444, 338, 121, 221?

Exnonrev is correct when he/she says "Those last two digits are Boeing's customer code".

Here are a few examples for the 747:

Qantas = 747-438
Singapore = 747-412
Air NZ = 747-419
Cathay = 747-467
Korean = 747-4B5
Thai = 747-4D7

Regards,
Steven

Sydney, Australia

Guest

### Anyone Know Where I Can Obtain A List?

Now does anyone know where I can get a list of the Airline and there Boeing number code?

LH423
Posts: 5903
Joined: Sun Jul 11, 1999 6:27 am

### PerthWA

Yes, if the plane is sold or leased the original number stays. So any of the BA 757s that go to DHL will retain the BA designator code even though they no longer fly with or are owned by BA. So three years down the road you could have a friend who flies for DHL in Europe and sit in the jump seat from Milano to Brussles and be on a 757-236, even though thats not DHL's code.

LH423
« On ne voit bien qu'avec le cœur. L'essentiel est invisible pour les yeux » Antoine de Saint-Exupéry

exnonrev
Posts: 598
Joined: Tue Oct 19, 1999 4:26 am

### RE: Anyone Know Where I Can Obtain A List?

There's a guy in France who has a thorough list on his website, but I can't think of the URL off hand.

To answer your question about changing codes, the only time that the codes ever change is if an order is cancelled while the a/c are being built. One example of this are the last few 747-131s that TWA acquired (including the infamous N93119). They were originally ordered as 747-125s by Eastern, but cancelled when the L-1011 became available. TWA bought those slots on the assembly line and the a/c were completed as -131s.

This isn't always the case, however. Several years ago Continental ordered five 767-324s, but cancelled the order while the a/c were being built. Those slots went to leasing companies, but the a/c were built with CO's -24 code.

One can write a short book on the peculiarities of Boeing customer codes. Hope this all helps.

timz
Posts: 6318
Joined: Fri Sep 17, 1999 7:43 am

### List Of Boeing Codes

One list is at www.chicago.com/airliners; go to "reference data and links" and you'll find a heading for Boeing codes.

timz
Posts: 6318
Joined: Fri Sep 17, 1999 7:43 am

### The Guy In France

The website that Exnonrev mentioned is probably www.decollage.org/airliners/ang/som.htm; it's well worth a look.

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