Used to downlink information to ground stations via VHF/HF (such as aircraft information) and uplink information to the aircraft (such as flightplans for the FMC).
ACARS is also used for airlines on-time statistics. It has various sensors for aircraft info...which help define OOOI times.
OOOI stands for Out, Off, On, In
Out as in Out of the gate, Off as in takeoff, On as in on the ground (landing) and In as in In the gate.
Airlines use this for on-time stats.
You can listen to it via an airband scanner on really high MHz like 3,000. Or really low like 2 MHz. You need a specialized scanner for this though. However I don't know how to decode it. Hope this helps though.
Seseal From Russia, joined Jul 2000, 19 posts, RR: 0
Reply 4, posted (13 years 7 months 5 days 6 hours ago) and read 1042 times:
I would advise you better apply to your engineering. They must have all the manuals you need if you want to learn ACARS secrets. Message formats are hardly found in a general type document like AEEC spec as they are more or less unique depending on your avionics supplier and your company policy...yes yes they are modifiable.