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ZDC controller experienced operational error with crossing traffic at 17000 ft during amended issuance of corrective actions.
| Attributes | |
| ACN | 638850 |
| Time | |
| Date | 200411 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : bwi.airport |
| State Reference | MD |
| Altitude | msl single value : 17000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar controller : non radar |
| Experience | controller non radar : 8 controller radar : 7 controller time certified in position1 : 3 |
| ASRS Report | 638850 |
| 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 |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 14580 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
E145 northbound at 17000 ft. B737 eastbound climbing to FL190. Issued a clearance of 16000 ft to B737 prior to loss of separation. The amended clearance was not in time. Due to bad radar data on display, I did not see that B737 was leaving 17000 ft. Therefore, B737 had to descend through 16000 ft again.
Original NASA ASRS Text
Title: ZDC CTLR EXPERIENCED OPERROR WITH XING TFC AT 17000 FT DURING AMENDED ISSUANCE OF CORRECTIVE ACTIONS.
Narrative: E145 NBOUND AT 17000 FT. B737 EBOUND CLBING TO FL190. ISSUED A CLRNC OF 16000 FT TO B737 PRIOR TO LOSS OF SEPARATION. THE AMENDED CLRNC WAS NOT IN TIME. DUE TO BAD RADAR DATA ON DISPLAY, I DID NOT SEE THAT B737 WAS LEAVING 17000 FT. THEREFORE, B737 HAD TO DSND THROUGH 16000 FT AGAIN.
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.