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An L1011 PIC report of an near midair collision with a single engine piper type aircraft in the TCA of atl. The controller did not give warning of the crossing same altitude NORAC traffic.
| Attributes | |
| ACN | 420158 |
| Time | |
| Date | 199811 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 4500 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011 Tri-Star All Series |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Piper Single Undifferentiated or Other Model |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 27000 flight time type : 4500 |
| ASRS Report | 420158 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : nmac non adherence : far other anomaly other other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
A single engine piper entered TCA without radio contact. ATC could not contact him. A short time later, that plane caused a TCASII traffic message on our ivsi, followed by descent message. We disconnected the autoplt and autothrottles and began a descent. The aircraft started at 5000 ft and descended to 4500 ft. During descent, first officer spotted aircraft passing at 3 O'clock and passed behind us. We then returned to 5000 ft. I wish ATC would have told us he was coming our way.
Original NASA ASRS Text
Title: AN L1011 PIC RPT OF AN NMAC WITH A SINGLE ENG PIPER TYPE ACFT IN THE TCA OF ATL. THE CTLR DID NOT GIVE WARNING OF THE XING SAME ALT NORAC TFC.
Narrative: A SINGLE ENG PIPER ENTERED TCA WITHOUT RADIO CONTACT. ATC COULD NOT CONTACT HIM. A SHORT TIME LATER, THAT PLANE CAUSED A TCASII TFC MESSAGE ON OUR IVSI, FOLLOWED BY DSCNT MESSAGE. WE DISCONNECTED THE AUTOPLT AND AUTOTHROTTLES AND BEGAN A DSCNT. THE ACFT STARTED AT 5000 FT AND DSNDED TO 4500 FT. DURING DSCNT, FO SPOTTED ACFT PASSING AT 3 O'CLOCK AND PASSED BEHIND US. WE THEN RETURNED TO 5000 FT. I WISH ATC WOULD HAVE TOLD US HE WAS COMING OUR WAY.
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.