|Quoting Pihero (Reply 85):|
Well, as modern air traffic control is based on these very same electronic sensors and transmitters and they have been safely done their job, I do not see a valid reason for distrusting them. Thousands of pilots', millions of passengers' lives rely on their accuracy in very, very crowded skies.
|Quoting spacecadet (Reply 87):|
It does need to be valid - it is what our next generation ATC system is based on. ADS-B is far more accurate than primary radar. It also broadcasts far more frequently than a primary radar sweep. It's basically GPS data being broadcast once per second.
-B is one piece of modern air traffic control system. NextGen likes are called Satellite/Local Based Augmentation Systems(SBAS), depends on whole bunch of other systems to achieve the accuracy.
-B broadcasting its own data doesn't give situational awareness, NextGen calculates everything else and sends back to SBAS receiver on the plane. And there is ADS
-C to send instructions from ATC.
-B may be reasonably reliable under normal circumstances, not for a plane under duress.
BTW, what is proposed SOP if one plane goes rouge in NextGen, every other plane in the neighborhood goes back to good ole separation rules.
If the requirement is just ADS
-B transmitters, why FAA need to spend $45 Billion and wait until 2027, both numbers are based on best case scenario.
|Quoting Kaiarahi (Reply 90):|
We get that you're fixated on this. Please point to one accident or incident caused by invalid ADS-B data.
Question is when was the last time an accident mystery got solved based on ADS
-B data. Somehow for this investigation it became a focal point.
Even N900KN, which was tracked for 3+ hours on all sorts tracking services, didn't end exactly where ADS-B data showed, Jamaica still has to search for it.
-B transmitters and a teenagers with ADS
-B receivers are good enough for FR24 to draw an estimated nice smooth line and animation. That's about it.
[Edited 2015-01-20 17:19:49]
All posts are just opinions.