Moderators: richierich, ua900, PanAm_DC10, hOMSaR

 
User avatar
skywalker92
Topic Author
Posts: 62
Joined: Thu Aug 06, 2015 8:45 am

Acars System On Airbus

Sun Apr 17, 2016 12:13 pm

ACARS(aircraft addressing and reporting system) is installed in both Airbus and Boeing as I know...

1).Is there principle differences between these two systems and their operations?

2).According to my knowledge it is used to exchange info between aircraft and ground( may be satellites will get involved). Is there any other uses from it?

3) I have heard that in MH370 B777 aircraft pilot had turned off it and even if it is turned off ACARS maintains a link between the aircraft and ground and Inmarsat uses that link to locate the aircraft by using BFO (burst frequency offset) and BTO (burst time offset). How to turn off the ACARS as that pilot did? Is there a way to turn it off permanently?

I know it is a bunch of problems and please help me to solve my unexplained problems...  

Thanks a lot.

Regards.
Skywalker92.
 
User avatar
zeke
Posts: 16333
Joined: Thu Dec 14, 2006 1:42 pm

RE: Acars System On Airbus

Sun Apr 17, 2016 1:07 pm

Quoting skywalker92 (Thread starter):
1).Is there principle differences between these two systems and their operations?

ACARS is really a network with many different ways for ground stations to access it (ATC and Airlines use different ACARS gateways). Aircraft can access the ACARS network via different radio links, VHF/HF/low orbit, and geostationary satellites.

http://www.arinc.com/interactive_infographics/images/ACARS_IG_enlarged.png

Quoting skywalker92 (Thread starter):
2).According to my knowledge it is used to exchange info between aircraft and ground( may be satellites will get involved). Is there any other uses from it?

We also can use it to pass messages aircraft to aircraft.

Quoting skywalker92 (Thread starter):
3) I have heard that in MH370 B777 aircraft pilot had turned off it and even if it is turned off ACARS maintains a link between the aircraft and ground and Inmarsat uses that link to locate the aircraft by using BFO (burst frequency offset) and BTO (burst time offset). How to turn off the ACARS as that pilot did? Is there a way to turn it off permanently?

I think a lot of that is conjecture not supported by any facts, it is not really worth commenting on.
 
mmo
Posts: 2059
Joined: Thu Apr 18, 2013 3:04 pm

RE: Acars System On Airbus

Sun Apr 17, 2016 1:16 pm

Quoting skywalker92 (Thread starter):
1).Is there principle differences between these two systems and their operations?

There is no difference in the system between Boeing and Airbus. What is different is the interface. Both provide Bendix, Collins and Honeywell ACARS systems and it's up to the aircraft owner to pick which they want. There are differences in the menus and interface between the systems but the operation is the same.

Quoting skywalker92 (Thread starter):
2).According to my knowledge it is used to exchange info between aircraft and ground( may be satellites will get involved). Is there any other uses from it?

It is up to the operator to determine the "pecking order" for communications. Some operators if they conduct mainly overland operations in Europe or the North America would most likely not use the SAT function, while oceanic operators would have the SAT link as an option. As ZEKE stated you can also go plane to plane for comm.

Quoting skywalker92 (Thread starter):
How to turn off the ACARS as that pilot did? Is there a way to turn it off permanently?

Since no one knows what he did, it would be pure specualtion and worthless. There are many ways to disable ACARS.
 
User avatar
skywalker92
Topic Author
Posts: 62
Joined: Thu Aug 06, 2015 8:45 am

RE: Acars System On Airbus

Sun Apr 17, 2016 1:51 pm

thanks both zeke and mmo..

Quoting mmo (Reply 2):
There are many ways to disable ACARS.

Is it just like stripping a CB or a much longer procedure?
every one tries to escape this question when I raised to them.. plz tell me how?  
Quoting zeke (Reply 1):
ACARS is really a network with many different ways for ground stations to access it (ATC and Airlines use different ACARS gateways). Aircraft can access the ACARS network via different radio links, VHF/HF/low orbit, and geostationary satellites.

Is it a one like internet? There are internet providers (as an example inmarsat) and a user can log on to it if its' device is compatible with it. In our case we can use VHF,HF,satellites what ever we like... Am I correct?

Regards.
Skywalker92
 
MPadhi
Posts: 127
Joined: Sun Jan 25, 2015 5:33 pm

RE: Acars System On Airbus

Tue Apr 19, 2016 10:48 pm

Quoting zeke (Reply 1):
We also can use it to pass messages aircraft to aircraft.

Is there a benefit of being able to do this?
 
User avatar
Starlionblue
Posts: 20769
Joined: Fri Feb 27, 2004 9:54 pm

RE: Acars System On Airbus

Wed Apr 20, 2016 12:27 am

Quoting MPadhi (Reply 4):

Quoting zeke (Reply 1):
We also can use it to pass messages aircraft to aircraft.

Is there a benefit of being able to do this?

Asking about weather en route for one.
 
apfpilot
Posts: 742
Joined: Wed Jun 05, 2013 4:19 pm

RE: Acars System On Airbus

Tue Apr 26, 2016 2:16 pm

Quoting MPadhi (Reply 4):
Is there a benefit of being able to do this?

On 9/11 dispatchers used it to alert crews to ensure the cockpit door was secure.

Who is online

Users browsing this forum: Bing [Bot], RushmoreAir and 16 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos