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ZDC controller described operational error at 9000 when two aircraft were assigned the same altitude; workload and WX deviations were listed as causal factors.
| Attributes | |
| ACN | 741128 |
| Time | |
| Date | 200705 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | intersection : binns |
| State Reference | MD |
| Altitude | agl single value : 9000 |
| Environment | |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller time certified in position1 : 8 |
| ASRS Report | 741128 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Thunderstorms no reroute from tmu massive diversions and confusion. 2 planes one level at 90 the other at 90 thought I stopped him at 100. Had to take evasive vectors to separate planes. Traffic management did nothing to help the controller. There were 3 different planes by 3 different sectors in 3 mins.
Original NASA ASRS Text
Title: ZDC CTLR DESCRIBED OPERROR AT 9000 WHEN TWO ACFT WERE ASSIGNED THE SAME ALT; WORKLOAD AND WX DEVIATIONS WERE LISTED AS CAUSAL FACTORS.
Narrative: TSTMS NO REROUTE FROM TMU MASSIVE DIVERSIONS AND CONFUSION. 2 PLANES ONE LEVEL AT 90 THE OTHER AT 90 THOUGHT I STOPPED HIM AT 100. HAD TO TAKE EVASIVE VECTORS TO SEPARATE PLANES. TFC MGMNT DID NOTHING TO HELP THE CTLR. THERE WERE 3 DIFFERENT PLANES BY 3 DIFFERENT SECTORS IN 3 MINS.
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.