Piloto Posted March 20, 2015 Report Posted March 20, 2015 According to the FAA ADS-B out would only be required for Class A (above FL 100),B,C after 2020. Can I file IFR for a flight (FL90) between two Class D airports and get ATC radar coverage with no ADS-B out, just my old KT-76? My assumption is yes. Do I am right? José Quote
Hank Posted March 20, 2015 Report Posted March 20, 2015 It is my understanding that ADSB Out will only be required in Class A (FL180 and up), B and C; I'm a little fuzzy on Class D, but I think not. So you should be able to file and fly between two Class D airports at 9000 msl. Unless things change in the next five years . . . . Quote
Jerry 5TJ Posted March 20, 2015 Report Posted March 20, 2015 Seems plausible that in 2020 you could file IFR with whatever code indicates "no ADS-B out" (M20P/XX, perhaps?) and so long as ATC radar target processors can still deal with a mode A/C target, and you remain outside A,B,C airspace and outside the 30 nmi veil around same. Of course, you can in theory do that now with no transponder, too. File as M20P/X and see what happens. Of course if you do have a transponder installed, switching it off is prohibited (in any controlled airspace) by 91.215 c. So, have a properly licensed individual remove the transponder, log the removal, correct the W&B, make this test flight as a /X outside A,B, and C airspace, and let us know how it works. Quote
Andy95W Posted March 21, 2015 Report Posted March 21, 2015 Seems plausible, but don't they also say that ADS-B will be required "anywhere Mode-C is currently required"? Since you need Mode-C to fly IFR in Class E airspace, I'll be interested to hear more. Quote
Cruiser Posted March 21, 2015 Report Posted March 21, 2015 the current logic is that, for the most part, ADS-B requirements are the same as Mode C requirements for airspace. Approach radar is not going away, it is needed to verify legitimate targets (spoofing and hacking), so transponders will still be required. En-route radar will go away eventually. A network of VOR stations will be managed is such a way to allow navigation to major terminal areas and ILS/LOC/VOR approaches in the event the GPS system is somehow compromised. Quote
GeorgePerry Posted March 21, 2015 Report Posted March 21, 2015 Answers to many common ADS-B airspace questions can be found here. Please enjoy! http://flash.aopa.org/asf/ads-b/index.cfm Quote
Piloto Posted March 21, 2015 Author Report Posted March 21, 2015 There is a significant difference on what AOPA says and the actual FAA AC 90-114 indicates. AOPA says where a mode C transponder is required now ADS-B out will be required. While the FAA AC 90-114 only indicates airspaces A, B, C & E(FL100 to FL180). No mention of type of flight. http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC%2090-114.pdf Mode A/C will still be required. You still need the (20dB gain) directional antenna on the ground to pick traffic at distance blocked by heavy precipitation in between. Unlike Mode A/C, ADS-B out has no bearing synchronization with directional antennas on the ground. The ADS-B out transmissions are randomly transmitted once a second. José Quote
Bob - S50 Posted March 21, 2015 Report Posted March 21, 2015 There is a significant difference on what AOPA says and the actual FAA AC 90-114 indicates. AOPA says where a mode C transponder is required now ADS-B out will be required. While the FAA AC 90-114 only indicates airspaces A, B, C & E(FL100 to FL180). No mention of type of flight. http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC%2090-114.pdf Mode A/C will still be required. You still need the (20dB gain) directional antenna on the ground to pick traffic at distance blocked by heavy precipitation in between. Unlike Mode A/C, ADS-B out has no bearing synchronization with directional antennas on the ground. The ADS-B out transmissions are randomly transmitted once a second. José I believe that is correct. However, you also need a mode C within 30 miles of the primary Class B airport even if outside the Class B itself. Don't know if ADS-B will be required or not. Bob Quote
sreid Posted March 21, 2015 Report Posted March 21, 2015 Seems plausible, but don't they also say that ADS-B will be required "anywhere Mode-C is currently required"? Since you need Mode-C to fly IFR in Class E airspace, I'll be interested to hear more. What rule requires Mode-C for IFR in class E airspace? Quote
Andy95W Posted March 21, 2015 Report Posted March 21, 2015 What rule requires Mode-C for IFR in class E airspace? None, now that I think about it (and look it up). I guess I've been doing it so long with a Mode C transponder (and getting it "IFR certified" every 2 years) I couldn't remember it wasn't needed. 1 Quote
Bob - S50 Posted March 22, 2015 Report Posted March 22, 2015 What rule requires Mode-C for IFR in class E airspace? FAR 91.215 requires a trandsponer and mode C at altitudes above 10,000' unless it is within 2500' of the surface. Bob Quote
Piloto Posted March 22, 2015 Author Report Posted March 22, 2015 Now, if I keep my old KT-76 and equip with a 978MHZ ADS-B out I can fly into B, C, E airspace. But what about if my old KT-76 dies. Can I still fly into BCE without it? My understanding of the FAA AC 90-114 is that you cannot. Which makes sense since TCAS traffic will not detect you. TCAS only works at 1090Mhz. In view of the above it makes more sense to spend my limited $2K investment on a new KT-74 to replace my old KT-76 than spending $3K on a 978MHz out to later replace the KT-76 at $2K because it crap out. With the KT-74 alone I get to fly to all airspaces José 1 Quote
Andy95W Posted March 23, 2015 Report Posted March 23, 2015 If you already have a WAAS GPS source to feed the KT-74. Quote
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