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Questions tagged [acars]

ACARS is a digital datalink system that uses radio or satellite communications channels.

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1answer
126 views

How can I identify airliner types that don't have ACARS?

Is there a way to identify what commercial airliners are still flying without ACARS today? Most modern commercial airliners are equipped, but I know some 737s still fly without ACARS, for example.
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2answers
518 views

Which frequencies does VDL Mode 2 use when used via the ATN (rather than ACARS)?

If I understand the slide below correctly (source), CPDLC can be used either via ACARS or via ATN. I know that, in the case of VDL Mode 2, there are specific ACARS frequencies. Which frequencies are ...
6
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0answers
2k views

How can this ACARS message be decoded?

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 ...
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1answer
288 views

To which security domain does the Cabin Intercommunication Data System (CIDS) belong?

I've read a lot about Cabin Intercommunication Data System (CIDS) functionalities and features, but yet it is not really clear to me if CIDS is part of the Airline Information Services Domain (AISD), ...
3
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1answer
1k views

How does VDL relate to ACARS and CPDLC?

I know that ACARS and CPDLC are 2 different systems, so I can compare ACARS vs CPDLC, but can I do the same comparation between CPDLC vs VDL? Or a CPDLC it’s a VDL? If CPDLC it is a VDL, ACARS it is ...
5
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1answer
831 views

How do military fighter aircraft identify themselves and each other?

I live in an area where there is much NATO military activity. Often there are various fighter aircraft fly-overs. But none of the common websites such as flightradar24, flightaware and ...
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1answer
2k views

Why do cockpits with ACARS have printers?

Most cockpits with ACARS have a thermal printer that is used for printing out information received. Why is this information printed out rather than displayed on a scrolling computer screen? Maybe I'...
4
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1answer
182 views

How do SIGMETs arrive in a cockpit on a modern longhaul flight?

What is todays medium of choice (Voice Radio, ACARS,CPDLC,…) to receive SIGMET messages on a commercial longhaul flight, for example from continental Europe to the US westcoast? Are there any ...
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1answer
684 views

What is the format of the airport codes used in an ACARS OOOI message?

How are the departure and arrival airport codes in the OUT, OFF, ON and IN (OOOI) fields identified by ACARS and transmitted to ground systems? For example, if my aircraft is diverted unexpectedly to ...
13
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1answer
10k views

What are the differences between ACARS and CPDLC?

What are the differences between Aircraft Communication, Addressing and Reporting System (ACARS), and Controller Pilot Data Link Communication (CPDLC)? Can anyone please let me know in short, what is ...
2
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0answers
186 views

How to get the fuel on board reading on UVdatalink via Honeywell ACARS system?

I would like to find out if anyone has encountered the following issue and how was it rectified. We are currently seeing the following results on UVdatalink for some of our aircraft that have ...
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2answers
1k views

What avionics systems are interfaced with ACARS?

I am a librarian looking for sources of information to help answer the following questions for one of our researchers: 1. what avionics systems are interfaced with ACARS and 2. how is the interaction ...
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1answer
521 views

What is the significance of the exclamation mark (!) on ACARS page of a Boeing 737?

For a while now I've noticed an exclamation mark on the ACARS inflight page of the B737NG at the beginning of a flight. It is located in the top left corner of the page and it just disappears after a ...
3
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1answer
721 views

What are the ACARS frequencies and what is their usage?

I have been playing with a SDR dongle. I have been able to decode some ACARS signals using SDR# and acarsd. I have noticed in my area (35 miles west of DFW airport) there are a number of frequencies ...
2
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1answer
666 views

Is implementation of CPDLC mandated by EASA?

Is CPDLC (Controller–pilot data link communications) mandatory by EASA? I have not heard any update that Airlines are using CPDLC. While talking to some of the pilots I heard that they have been ...
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3answers
758 views

Is it possible to ping ACARS repeatedly and track an aircraft?

This is a followup to What data does ACARS send back to base? Can it be used to track a plane? I had asked this as a part of the earlier question, but it seems to be a large enough issue to be ...
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3answers
5k views

What data does ACARS send back to base? Can it be used to track a plane?

An aircraft's Aircraft Communications Addressing and Reporting System uses line of sight HF via ground stations or satellites to communicate with its base station. This system allows for three types ...