[ACARS] CPX decode

Tue, 2 Jul 2002 02:55:19 +0200

----- Original Message -----
From: David Triggs <[email protected]>
Subject: Re: [ACARS] CPX decode

 Hi David,

> I have contemplated this and while it is possible to do it is only
> 'semi' possible because of the length of the messages. If all data was
> sent in one message it would be possible to do infact pretty easy,
> however there is so much data transmitted as multi part message the
> problem becomes very complex.

aah got it, have had a conversation with one of the guys which do this
Templates for the company's,
he told me that they all have to write them by themselves, so my guess was
that it should be possible when the format and info in the message was known
at hand of the messagetype.

> The problem with translating a message is keeping track of the message
> parts,  It is more possible with messages with message numbers such as
> D01A, D01B, D01C, but if the message number is D234, D235, D236, it
> becomes very difficult to track where the message began, and what is
> expected next, not too mention that most airlines customise there
> message content, so in the case of a A330 flying into Perth we have
> Cathay, Thai and Garuda, all using slightly different message formats.
> For the 747's QANTAS and British Airways have completely different
formats.

Yes, as i said, they do write them themselves and it seems that it isn't a
format which
is in use at large basis. It is handy though, now they know for sure we
can't do anything with it in an automatic way.

> This message illustrates the problem
> #DFB*TKO3201B 02050207P313P2580028592906139404721712C1722113
> C109810985100810068918850447504634P053P0536263103103027037020037061035074
> 049126082072008P414P410186074907080001100010359359
>
> The TKO message can from a quick look, have two types TKO320 TKO1H1
>
> There are 3200 and 3201 Which can have A to H sub types. From the data I
> have been given from all over the workd this changes from airline to
> airline on the 737's to to solve a 737 TKO message you may have 100
> different types of message format to choose from. In Australia Ansett
> and QANTAS had different types of Take off message as well as ENGA, B, C
> and D messages.
>
> Yes it is possible, probably not in real time, I might have a go at
> something and see how I go. I can decode a lot of the information,
> infact that is what the original of Acars Analyser was written to do,
> get great slabs of data to work out what it all means. To that extent it
> is fantastic, I could probably add a translation layer to the data you
> have searched but even then it is very difficult to keep track of the
> sequencing and the airline and the sub type........
>
> David
>
> Jan Willem Penris wrote:
>
> >----- Original Message -----
> >From: Frans Dechaene <[email protected]>
> >Subject: [ACARS] CPX decode
> >
> >
> > Hi Frans and David,
> >
> >>As far as this format is concerned, I am not familiar with it but the
> >>TD is very well possible the auto thrust (Airbus !) disconnect. The
> >>
> >
> >Like this i think it is the most interesting part of the Acars business,
> >think if possible someone should write an application which almost
> >automatically
> >set all the values in the right place, a kind of template program.
> >Who can do such  thing?
> >
> >Grtz, JW.
> >
> >
> >_____________________________________________
> >Acars info and Aircraft ID answers go to: http://www.acarsonline.co.uk
> >[email protected]
> >http://mailman.qth.net/mailman/listinfo/acars
> >
>
>
>
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