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Pilot reported a near-mid-air-collision with a seneca that was detected by the onboard ads-B system; but ATC had not advised of the conflict.
| Attributes | |
| ACN | 1481204 |
| Time | |
| Date | 201709 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Amateur/Home Built/Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | PA-34-200 Seneca I |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Person 1 | |
| Function | Single Pilot |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 45 Flight Crew Total 2600 Flight Crew Type 900 |
| Events | |
| Anomaly | ATC Issue All Types Conflict NMAC Deviation - Procedural Published Material / Policy |
Narrative:
I was at 4;000 IFR talking to approach when my skyview display started giving me a 'traffic warning'. The ads-B indicated I had traffic 3 miles out; approaching me; head on at my same altitude. When the alert showed the traffic at 1 mile; still approaching me head on and still at my altitude I turned to the right and firmly pulled the nose up. A few seconds later I saw a twin engine airplane; about 100 ft below me; right where the ads-B was showing pass by. When I got over the 'scare' I told the controller what had just happened. The controller sheepishly told me it was a seneca maneuvering in that area. Needless to say I let the controller know I was a little upset about what happened. I don't know if I would I have seen the traffic without the ads-B 'point out' but being able to know where to look for traffic is a significant safety enhancement. In this case I didn't actually see it until it was extremely close. I am so glad I have this in my airplane.
Original NASA ASRS Text
Title: Pilot reported a near-mid-air-collision with a Seneca that was detected by the onboard ADS-B system; but ATC had not advised of the conflict.
Narrative: I was at 4;000 IFR talking to approach when my SkyView display started giving me a 'Traffic Warning'. The ADS-B indicated I had traffic 3 miles out; approaching me; head on at my same altitude. When the alert showed the traffic at 1 mile; still approaching me head on and still at my altitude I turned to the right and firmly pulled the nose up. A few seconds later I saw a twin engine airplane; about 100 ft below me; right where the ADS-B was showing pass by. When I got over the 'scare' I told the controller what had just happened. The controller sheepishly told me it was a Seneca maneuvering in that area. Needless to say I let the controller know I was a little upset about what happened. I don't know if I would I have seen the traffic without the ADS-B 'point out' but being able to know where to look for traffic is a significant safety enhancement. In this case I didn't actually see it until it was extremely close. I am so glad I have this in my airplane.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.