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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ZTL controller providing OJT experienced conflict at FL250 when tmu requested no holding during busy atl arrival rush.
| Attributes | |
| ACN | 736563 |
| Time | |
| Date | 200704 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : mgm.vortac |
| State Reference | AL |
| Altitude | msl single value : 25000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 8 controller radar : 20 controller time certified in position1 : 15 |
| ASRS Report | 736563 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Miss Distance | horizontal : 21000 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I think that the tmu position pushing the in-trail to atl to 15 mi in a late and unnecessary action; then within a couple of mins after being questioned; realizing we were now holding; made a correction and said do whatever you have to do stay out of holding. This made both sectors scramble to comply with those instructions. This caused such a frenzy of activity with workloads exponentially increasing. This makes controling traffic safely very difficult at best; just keeping up with the traffic is a struggle.
Original NASA ASRS Text
Title: ZTL CTLR PROVIDING OJT EXPERIENCED CONFLICT AT FL250 WHEN TMU REQUESTED NO HOLDING DURING BUSY ATL ARR RUSH.
Narrative: I THINK THAT THE TMU POS PUSHING THE IN-TRAIL TO ATL TO 15 MI IN A LATE AND UNNECESSARY ACTION; THEN WITHIN A COUPLE OF MINS AFTER BEING QUESTIONED; REALIZING WE WERE NOW HOLDING; MADE A CORRECTION AND SAID DO WHATEVER YOU HAVE TO DO STAY OUT OF HOLDING. THIS MADE BOTH SECTORS SCRAMBLE TO COMPLY WITH THOSE INSTRUCTIONS. THIS CAUSED SUCH A FRENZY OF ACTIVITY WITH WORKLOADS EXPONENTIALLY INCREASING. THIS MAKES CTLING TFC SAFELY VERY DIFFICULT AT BEST; JUST KEEPING UP WITH THE TFC IS A STRUGGLE.
Data retrieved from NASA's ASRS site as of January 2009 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.