With regards to the text below, can someone offer either advice or a link to a website/document that would help decode ACARS messages.

I am ok with the following:

  • QU - ACARS "to" address
  • Q - ACARS "from" address
  • FML - data from left hand FMS
  • FI - Flight Identifier
  • AN - Aircraft Number
  • IGW1 - Iridium server identifier
  • 130710 - date/time of data package sent
  • F57A - package identifier

So that leaves the DT QXT info plus the hex from ADS line.

.QXSXMXS 130710    
FI AB1234/AN G-INFO    
DT QXT IGW1 130710 F57A    
-  ADS.TF- 


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    $\begingroup$ Welcome to aviation.SE. Could you please be more explicit on what you do and do not understand? QXT is one, could you list all the terms that you are missing? This will help in giving you a better answer. $\endgroup$ – Federico Nov 16 '17 at 12:12
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    $\begingroup$ As @Federico says, a list of what you understand and what you don't, will be helpful in providing a good answer. I've modified your question, so that it is much more understandable, but you can always roll-back to your original question, if you don't like the new one. Welcome to Aviation.SE! : ) $\endgroup$ – Anand S Nov 16 '17 at 12:38
  • $\begingroup$ For another flight I've managed to get it to convert to this but it's the text on the DT line and POS line that I need help with. Also is there a list of acronyms such as "QXT" that might be available somewhere? QU CPYXXXX .REKASCC 161345 FML FI AA0000/AN G-INFO DT QXT IGW1 161345 F64A - POSN70071W097007,,134460,360,DERLI,135460,DUKPA,M55,29530,1276,84,CDEB $\endgroup$ – Smudger308 Nov 16 '17 at 13:48
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    $\begingroup$ POSN70071W097007 is clearly a lat/long: N 70 071, W 097 007. I would guess that those are decimal degrees, but they might be degrees and decimal minutes. If the last three-figure group ever goes above 599, they're decimal degrees. DERLI and DUKPA look like nav fixes (DERLI is at about N69 W100, DUKPA at about N65 W110); the easiest way to look these up is skyvector.com. QXT is not a standard Q-code (those only run QA to QU). $\endgroup$ – Firedrake Dec 28 '17 at 13:19
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    $\begingroup$ DT QXT IGW1 130710 F57A: From SITA Immarsat (DSP=QXT), received by Iridium satcom (RGS=IGW1). reception timestamp = 13:07:10, message sequence number = F57A. Tables are in ARINC 620. $\endgroup$ – mins Nov 21 '18 at 21:16

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