dlloyd3
Well Known Member
Went on a short trip last week with a friend in his Bonanza to show off his Garmin 750 and ADSB receiver, comparing features to the Dynon Skyview in my RV. Leveled off at 3000, watched him put autopilot on, then looked directly ahead and saw an oncoming airplane. I said "Traffic, straight ahead" and pointed. He said "Don't see 'em" then maybe two seconds later "I don't" and I grabbed the wheel, turned hard and pulled. As I turned the wheel, I heard from the Garmin, "Traffic Alert, Same Altitude." Within a five or six seconds a Cessna Caravan passed just behind us, maybe a quarter mile, same altitude.
This was a worst case scenario, two fairly fast airplanes approaching head on, closing at 300 knots or so. I did some reading later and found that Dynon will give a Traffic Advisory warning if a 1/4 mile conflict is projected to occur in the next 30 seconds. Dynon also states there may be a lag of 2-12 seconds due to radar (did they say lag) and other technical issues. I suspect the Caravan did not have ADSB out and we were getting his position from TIS. Uh, let me think.... say 20 seconds plus a 1/4 mile would have put the advisory about two miles apart. Don't know how that compares to the Garmin but that is not much time and certainly not the warning we received.
For several weeks I have been oohing and aahing about seeing all that traffic on my display. Yes, it really is neat technology. With all that it will do, there are limitations. I've been flying 38 years and seen a few airplanes close up. Made a couple of turns to add some distance. This is the only time I have seen another plane when pointed directly at each other. There is little time to react.
This was a worst case scenario, two fairly fast airplanes approaching head on, closing at 300 knots or so. I did some reading later and found that Dynon will give a Traffic Advisory warning if a 1/4 mile conflict is projected to occur in the next 30 seconds. Dynon also states there may be a lag of 2-12 seconds due to radar (did they say lag) and other technical issues. I suspect the Caravan did not have ADSB out and we were getting his position from TIS. Uh, let me think.... say 20 seconds plus a 1/4 mile would have put the advisory about two miles apart. Don't know how that compares to the Garmin but that is not much time and certainly not the warning we received.
For several weeks I have been oohing and aahing about seeing all that traffic on my display. Yes, it really is neat technology. With all that it will do, there are limitations. I've been flying 38 years and seen a few airplanes close up. Made a couple of turns to add some distance. This is the only time I have seen another plane when pointed directly at each other. There is little time to react.