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Small aircraft Y unauthorized VFR descent into TRSA had near midair collision with small aircraft X. Evasive action taken. Pilot deviation.
| Attributes | |
| ACN | 227343 |
| Time | |
| Date | 199211 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mcn |
| State Reference | GA |
| Altitude | msl bound lower : 8000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl tracon : mcn |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 9 |
| ASRS Report | 227343 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental controller : non radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 300 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Small aircraft X cae mcn V323 euf mob was in the TRSA overflying. ZTL was providing VFR flight following to small aircraft Y VFR/105. I was working several aircraft into atl when the conflict alert sounded. I then observed small aircraft Y in my airspace, 1 mi away from small aircraft X converging. I immediately issued a traffic alert and advised small aircraft X 'traffic 11-12 O'clock less than a mi converging nwbound, altitude indicates 8000, advise you descend immediately and maintain 7000.' small aircraft X then said traffic insight. I advised my supervisor who called ZTL sinca sector to inquire what happened. ZTL advised there was training in progress and was there a problem? The supervisor informed my supervisor he'd check on it. My supervisor made no entry in the log and apparently neither did ZTL. As per FAA directive, all abnormal sits are required to be put in the log, but there seems to be an attitude of no harm done -- why bother. The ZTL controller providing OJT apparently didn't observe the aircraft descend or the pilot didn't report he was descending.
Original NASA ASRS Text
Title: SMA Y UNAUTH VFR DSCNT INTO TRSA HAD NMAC WITH SMA X. EVASIVE ACTION TAKEN. PLTDEV.
Narrative: SMA X CAE MCN V323 EUF MOB WAS IN THE TRSA OVERFLYING. ZTL WAS PROVIDING VFR FLT FOLLOWING TO SMA Y VFR/105. I WAS WORKING SEVERAL ACFT INTO ATL WHEN THE CONFLICT ALERT SOUNDED. I THEN OBSERVED SMA Y IN MY AIRSPACE, 1 MI AWAY FROM SMA X CONVERGING. I IMMEDIATELY ISSUED A TFC ALERT AND ADVISED SMA X 'TFC 11-12 O'CLOCK LESS THAN A MI CONVERGING NWBOUND, ALT INDICATES 8000, ADVISE YOU DSND IMMEDIATELY AND MAINTAIN 7000.' SMA X THEN SAID TFC INSIGHT. I ADVISED MY SUPVR WHO CALLED ZTL SINCA SECTOR TO INQUIRE WHAT HAPPENED. ZTL ADVISED THERE WAS TRAINING IN PROGRESS AND WAS THERE A PROB? THE SUPVR INFORMED MY SUPVR HE'D CHK ON IT. MY SUPVR MADE NO ENTRY IN THE LOG AND APPARENTLY NEITHER DID ZTL. AS PER FAA DIRECTIVE, ALL ABNORMAL SITS ARE REQUIRED TO BE PUT IN THE LOG, BUT THERE SEEMS TO BE AN ATTITUDE OF NO HARM DONE -- WHY BOTHER. THE ZTL CTLR PROVIDING OJT APPARENTLY DIDN'T OBSERVE THE ACFT DSND OR THE PLT DIDN'T RPT HE WAS DSNDING.
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.