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Near midair collision with intruder aircraft which had no transponder or TCASII. Intruder encroached into class B airspace. ATC didn't see aircraft on radar. Reporter aircraft had to take immediate evasive action and went under the cessna by 400 ft.
| Attributes | |
| ACN | 325596 |
| Time | |
| Date | 199601 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 3000 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl tower : cvg |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 96 flight time total : 17000 flight time type : 3000 |
| ASRS Report | 325596 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : far non adherence : published procedure other anomaly other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On approach to atlanta on crosswind to runway 09R, heading 320 degrees, altitude 3500 ft, airspeed 160 KTS, as directed by ATC. High wing cessna (152/72 type) appeared in windshield at 12 O'clock approximately 1 mi same altitude traveling from my right to left heading approximately 240 degrees. So saw aircraft, called it out. I was flying, pushed over and descended approximately 500 ft. Bogey passed over cockpit as we descended. We missed him, I estimate by 300-500 ft. ATC did not have him on radar. He was not on TCASII. Reported traffic to ATC who reported it to subsequent aircraft.
Original NASA ASRS Text
Title: NMAC WITH INTRUDER ACFT WHICH HAD NO XPONDER OR TCASII. INTRUDER ENCROACHED INTO CLASS B AIRSPACE. ATC DIDN'T SEE ACFT ON RADAR. RPTR ACFT HAD TO TAKE IMMEDIATE EVASIVE ACTION AND WENT UNDER THE CESSNA BY 400 FT.
Narrative: ON APCH TO ATLANTA ON XWIND TO RWY 09R, HEADING 320 DEGS, ALT 3500 FT, AIRSPD 160 KTS, AS DIRECTED BY ATC. HIGH WING CESSNA (152/72 TYPE) APPEARED IN WINDSHIELD AT 12 O'CLOCK APPROX 1 MI SAME ALT TRAVELING FROM MY R TO L HEADING APPROX 240 DEGS. SO SAW ACFT, CALLED IT OUT. I WAS FLYING, PUSHED OVER AND DSNDED APPROX 500 FT. BOGEY PASSED OVER COCKPIT AS WE DSNDED. WE MISSED HIM, I ESTIMATE BY 300-500 FT. ATC DID NOT HAVE HIM ON RADAR. HE WAS NOT ON TCASII. RPTED TFC TO ATC WHO RPTED IT TO SUBSEQUENT ACFT.
Data retrieved from NASA's ASRS site as of July 2007 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.