Originally Posted by
gloopy
I'm sure we could get regional exemptions. NYC and ATL may be too high density and precision demanding by then, but DTW, MSP, CVG, IND and many other hubs and focus cities (and the vast majority of the outstations they serve) won't need to be anywhere near 0.0000000001nm precision or whatever the white paper fantasy is this week.
We had wobbly needle DC-9's a half decade or so ago. The 88/90 is way, way accurate enough for the overwhelming vast majority of markets in the country for many more years.
This should be a very easy exemption to get if we end up needing it. We'll just have to accept a few off limits markets. Big deal.
The ADSB requirement has nothing to do with navigation or approach requirements. It is essentially a new form of transponder that data links lots of info to controllers including aircraft position, altitude and airspeed as well as call sign. It is planned to replace radar at some point in the future. Most of Delta's fleet is not ADSB equipped so this is not unique to the MD. Delta just does not want to pay for the install on aircraft that will retire shortly. It appears that Delta is only purchasing ADSB out to meet the 2020 requirement which is sad. From a pilot standpoint all the cool stuff is on the ADSB in feature. ADSB in however is not required for the 2020 mandate.
The FAA has stated repeatedly that there will be no extensions on the 2020 deadline. I guess we will see in 2 years. It's a big cost for light aircraft owners because it requires a certified GPS to feed the aircraft position to the ADSB box. The actual ADSB unit is very low cost.