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Gso controller recognizes too late to maintain legal separation between a descending E135 and a level, en route PA32.
| Attributes | |
| ACN | 521159 |
| Time | |
| Date | 200108 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : gso.airport |
| State Reference | NC |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | Mixed |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : gso.tracon artcc : zny.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Embraer Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : gso.tracon |
| Operator | general aviation : personal |
| Make Model Name | PA-32 Cherokee Six/Lance/Saratoga |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Experience | controller limited radar : 20 controller radar : 3 controller time certified in position1 : 1 controller time certified in position2 : 8 |
| ASRS Report | 521159 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance controller : issued advisory |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15360 vertical : 100 |
| Supplementary | |
| Problem Areas | ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Issued descent to commuter to 9000 ft. Pilot, a few mins later, asked to deviate to left, approved and told pilot to maintain 10000 ft. Mentally, I thought I was stopping him at 11000 ft. Approximately 3 mi, I issued traffic to PA32 who stated he had commuter in sight. Told PA32 to maintain visual. No TCASII alert no conflict alert. Casual factors: first day back. Numerous thunderstorms. Working west radar and final. 9-10 aircraft on frequency.
Original NASA ASRS Text
Title: GSO CTLR RECOGNIZES TOO LATE TO MAINTAIN LEGAL SEPARATION BTWN A DSNDING E135 AND A LEVEL, ENRTE PA32.
Narrative: ISSUED DSCNT TO COMMUTER TO 9000 FT. PLT, A FEW MINS LATER, ASKED TO DEVIATE TO L, APPROVED AND TOLD PLT TO MAINTAIN 10000 FT. MENTALLY, I THOUGHT I WAS STOPPING HIM AT 11000 FT. APPROX 3 MI, I ISSUED TFC TO PA32 WHO STATED HE HAD COMMUTER IN SIGHT. TOLD PA32 TO MAINTAIN VISUAL. NO TCASII ALERT NO CONFLICT ALERT. CASUAL FACTORS: FIRST DAY BACK. NUMEROUS TSTMS. WORKING W RADAR AND FINAL. 9-10 ACFT ON FREQ.
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.