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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier X same altitude assigned in overlapping holding patterns had less than standard separation from cpr Y. System error.
| Attributes | |
| ACN | 243353 |
| Time | |
| Date | 199306 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : gve |
| State Reference | VA |
| Altitude | msl bound lower : 39000 msl bound upper : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tower : atl |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 4 controller radar : 18 |
| ASRS Report | 243353 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X en route via EMI gve J75 gso. Cpr Y holding over gve. Both aircraft at 39000 ft. I was distracted by another set of aircraft which had overlapping holding patterns elsewhere in sector. Additional distraction came when I realized that 1 aircraft, which I recently accepted, was erroneously heading for the sector boundary. Conflict alert activated about 5 mi apart head-on. I issued immediate turns, aircraft passed 2 mi apart.
Original NASA ASRS Text
Title: ACR X SAME ALT ASSIGNED IN OVERLAPPING HOLDING PATTERNS HAD LTSS FROM CPR Y. SYS ERROR.
Narrative: ACR X ENRTE VIA EMI GVE J75 GSO. CPR Y HOLDING OVER GVE. BOTH ACFT AT 39000 FT. I WAS DISTRACTED BY ANOTHER SET OF ACFT WHICH HAD OVERLAPPING HOLDING PATTERNS ELSEWHERE IN SECTOR. ADDITIONAL DISTR CAME WHEN I REALIZED THAT 1 ACFT, WHICH I RECENTLY ACCEPTED, WAS ERRONEOUSLY HDG FOR THE SECTOR BOUNDARY. CONFLICT ALERT ACTIVATED ABOUT 5 MI APART HEAD-ON. I ISSUED IMMEDIATE TURNS, ACFT PASSED 2 MI APART.
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.